THIS & THAT #79 tubalcain mrpete starrett micrometer 

The world needs more Mr. Petes

Even if you "only" have a few thousand viewers per video, I can guarantee that those of us who do watch are genuinely interested in what you do. We are loyal fans, plain and simple. Thank you Mr Pete for your interesting AND funny channel! Your ironic rants about things are always hilarious and really spot on. They make me laugh a lot.

A cup of coffee and time spent with Mr. Pete. Ah, a wonderful way to start the day.

On the Lathe Chuck, I have experienced no difference on tightness, I have tried both ways many times to see if there is a difference. On the Drill Chuck, I have experienced a big difference in tightness, I get far less slippage if I tighten all three spots. Thank you Lyle for sharing the great stories.

Mr Peterson : You do sooooo much for us , to teach us and help us understand , What can we do to help you !! Your video;s and comments are priceless to us all !!!!! Please let us know .

My dad was a tool grinder at Cleveland Twist Drill then an independent shop that specializes in the Aerospace industry. He taught me that if a chuck has 3 holes that you use all 3. Snug the first and then the others progressing tighter. I've never had a bit spin until the keyless chuck.

Hi Mr Pete, please don't stop doing stuff in the shop. Thanks for the covered bridge update, keep them coming.

A Mr. Pete notification is still the most welcome thing that shows up on my phone! I will be late to the shop this morning simply because your video is more important than my projects. I saw a national news report in your covered bridge. A few Amish men would solve the reconstruction problem in quick order and probably maintain period authenticity better than museum curators. The fond memories triggered by your influence on the man selling his shop was a good feature in this video. I find encouragement when I stumble across the effect in a young person's life that I know originated by my influence. That may be the best part of being a teacher. No one else may know, but you do. "This and That" keeps the running stories alive. You are an interesting man. These stories let us know about you.

Tightening a chuck: I was taught the three position method in trades, and have found that with sloppy or worn chucks, I get definite movement on the second hole every time, telling me that it helps. I haven't found the same on good chucks. The old Cushman 3-jaw scroll chuck for my small lathe (it is compact, so it get a fair bit of use) won't center the work well if I don't use all three holes, but my new-ish Bison doesn't care. I had one of the HF chests for years. It was fine. Over time, the drawer bottoms took such a set that the drawers wouldn't open easily, but, then again, I loaded them with drills, cutters, and tool blanks. I finally tossed it when a drawer front pulled off while opening it a few years ago. Lasted at least ten years. I'd need to get 70 to 150 years out of a new Gerstner.

Tightening 1,2,3 centers the scroll in the same place each time. I centered my scroll outwards on a ring, then ground the inside of the jaws, then held a piece of preturned 3/4" mild steel in the tail stock, and very gently tightened the jaws on it, using tighten #1 hole, and added grinding paste, lapping the jaws progressively. Now I can put a workpiece in it, and tighten #1 and it runs within 1/2 a thou. Tightening the same jaw # always puts the scroll in the same place. Learned this from a jaw manufacturer 45 years ago.

Hey Mr Pete, always enjoy your videos. My niche is working on & repairing old tractors - cleaning, removing broken bolts, machining new parts, prepping & painting. All of your “tidbits” are a result of your experience and input them to use immediately. There are a lot of people putting stuff on RU-vid and some of the presenters are making similar comments. I can’t wait to see what Mr Pete is showing us this time. John

Congrats Mr Pete you deserve a lot more than 300k! 👍👍 Don't worry about the algorithm just make the videos you want make and we'll watch them. I watch every video, except for petebay as I'm poor and can't afford any of the beautiful tools you're offering.

Mr Pete tell everyone to like your videos that's what brings your videos up so people can see them. Likes are more important than subscribers

Still here, still watching, and will till one of us passes on to the next journey👌👍 Really like the anecdote videos.. Please make more.. We hard core viewers love them.

Hi Lyle, your videos are never boring 👍👍

Congrats on the 300K, should be more, but I watch everything you put out, always enjoyable, humorous and informative, long may you continue!

Keep doing what you are doing Mrpete I always look forward to watching your videos and seeing what interesting things you do. 👍👍👍👍

Another great video. Thanks for all you do.

Chrysler built that huge Sherman Tank facility in six months in 1940. It can be done! We choose to pander and doodle before the hammers start singing. I’ve been watching your videos since 2013. At that time there were very few RU-vid channels with metal machining content. You taught me so much over the years. You have made me a very accomplished hobby machinist. I thank you sir! Ten times over 😘

Mr Pete ….. why do you worry about views? Views don’t mean anything. You can put up a video of a cat smacking a bird and get a million views. I honestly think the title says it all. But like you said if you have subscribers that are no longer with us then it would explain the view count. I can tell you that I never miss any of your videos. I always seem to learn something new every time. I unfortunately became disabled in 2016 and needed something to fill my time. Here 8 years later I have a heavy 10 south bend ( with the large bore ) and a wells index 747. I think I have watched every video you put out. I have learned so much from your videos that I can’t thank you enough. ITS NOT THE VIEWS YOU GET BUT,THE KNOWLEDGE YOU GIVE. You have given so much knowledge to so many people. Keep up the great work…….

Can you imagine a stadium full of 5 or 6 thousand people, all listening to you? You can teach something, and 13 years later someone can find your video and learn the exact same information. Generations of machinists can learn from the same man. Amazing.

Mr. Pete, I watch ALL of your videos, except for the PETE-BAY videos. as I currently only have a chineseium minilathe that I just refurbished and most of your tooling plethora is just too large for the setup I have. Please keep posting the anecdote videos too, because unlike others, I like hearing stories from earlier generations. they always contain some type of wisdom and or learning. So long for now. Love and GOD Bless you.

Hi Mr Pete... Congratulations on reaching 300K viewers !!! Please keep your shop videos coming, they are very valuable to us who tinker in our basements. Thanks for all the videos you do. Dan😊

thank you mr. pete 😀😀😀😀😀😀😀

Try this experiment get around piece of material preferably something ground and straight put it in the chuck in the lathe put an indicator on the piece and spin it adjusted to the high spot on the indicator and tighten the lug closest to the high spot watch the indicator then you spin the check again and find the high spot tighten that lug half the movement of the indicator. Rinse and repeat. You'll be amazed.

Thanks Mr. Pete for another wonderful video it's always a pleasurer!

We love you Mr. Pete! Thanks for ALL of your videos, even the ones in which you rant "too much".

Thanks for the bridge update [ I know that the bridge is an ocean & 4000 miles away but it fascinates me], keep updating us of the progress please. I find all your content of interest keep up the good work.

Great Work. Receive notification of each of your New Videos. Watch each one several times. Just like the complete collection of your Videos on Flash Drives. Enjoy each and Every Episode. Please keep up the Great Work.

On the scroll chuck question, it might be worthwhile to do a video with the back off a scroll chuck to show the scroll and the pinions, demonstrating how the chuck actually works. Then you could mount the (reassembled) chuck on the lathe and check runout on a dowel pin with one, two and three pinions tightened.

Congrats on 300K subscribers Mr.Pete!

Thank you Mr Pete

Hello Mr. Pete First of all, all of your content is great and there are those of us who are always happy when you post new offerings. Regarding chuck tightening, I have found that incrementally and sequentially tightening each spot on a 3 jaw lathe chuck or a drill chuck can result in less runout and better repeatability on the runout. Originally, more than 50 years ago, I was informed by my high school machine shop teacher that this was best practice. It seems to work for me so I do it. None of my chucks are of very high quality and perhaps if they were it wouldn’t make as much difference. As always, looking forward to more Tubal Caine.

Mr. Pete, love your videos, ALL of them. Please don't stop your shop videos. We really enjoy your stories and road trips too.

It would be interesting to see an experiment on a three jaw chuck where you chuck a piece of drill rod and dial indicate using either method and compare the results. Also, if there are more than one three jaw available (say 5 or six) record and tally the results. Please don't ever stop doing shop videos. You may have 300K subscribers but there is a small group of us that hard core subscribers. We never miss a Mr Pete Video. In my opinion, the USA is becoming a place where there are too few people who can do things with their hands. It is sad to see. Your channel has shown some of us that we can indeed accomplish things with our hands. For that you deserve many thanks. I am 78 years young and I wish that in my school years that I had a shop teacher like you. I do enjoy some of your non machining videos but I would hate to see them displace the machining videos completely. I have said this before, repetition is the way some of your more hard headed subscribers learn. I hate to admit, it but I'm in that category. You have given your viewers and subscribers much more than you know. KOKO!

Congrats on the 300K subscribers!! The 1-2 K of us that watch your videos regularly, all leave with knowledge we didn't have before. We can all pass on that knowledge. Despite the RU-vid algorithms your knowledge and messages are filtering out to thousands. I have pointed some folks to your channel and they all enjoy it. BTW, you just called me old..LOL. I guess I"m starting to resemble that remark!

You always have content that I find interesting. When my channel was active, I only had 11k or so subscribers but at the most only 600 ever watched a video. I think they just subscribe because you asked them too and then they don't come back. Thanks for the video keep on keeping on.

I watch every Video lyle. You are such a treasure of History with Your memory, Rants & stories. Like another commenter said, You have a loyal following of hard core Viewers... It might be "Muscle Memory" from tightening 4 Jaw chucks LOL... Someone told Me Horses got spooked going over bridges and a covered bridge gave the Horse the sense of going into a Barn. Mike M.

Love your “THIS AND THAT” series… in fact ALL your rambling

Great job Mr.Pete. Seeing the old wood workers bench made me laugh. I have one just like that. It belonged to my grandfather and now it’s mine. Thank you 🙏 😊

You are the best, hands down. I watch everything you and Scoutcrafter put out there. Thanks for your enormous contribution. PLEASE continue! I remember Henry in the toolbox.

LOL I watch every video since I discovered you about 2010 so don't blame me. But think on this, you my friend are now immortal! All those young folks that aren't watching you today will be watching you tomorrow as older folks. You don't get the views all at once today? So what! These videos have staying power, they will outlive your grand children. Do you think anyone will care about 99% of today's RU-vid videos in just a couple years? Not a chance, they are just pop culture fluff! But your library is a treasure of practical information that will be primary source information for generations to come. Like the Foxfire books there will ALWAYS be people learning from your videos. You should be very proud of this profound gift you have given the world! I and the rest of humanity thank you profusely good sir!

I re rang the bell. Never boring videos.

Thanks for the mention hope you enjoyed the package .that is pvc board just use pvc glue sticks quite quick .nice to see another interesting video. Thanks mr pete !!

You should set up RU-vid memberships. I'm sure those few thousand very loyal subscribers would love to support you directly rather than relying on ad revenue

Always enjoy your videos

Mr Pete. I’ve been a heavy equipment mechanic for 25 years. I have drilled a lot of holes with a hand held air drill in poor conditions. I have always ran Jacob drill chucks on all my drills, I do believe in heavy drilling, especially hand holding a drill, tightening the chuck in more than just one hole seems to get the chuck just a touch tighter. I don’t find it necessary when using my mag drill or when using one of milling machines while drilling. Take care really enjoy every video.

Thanks for sharing Mr Pete keep doing shop videos enjoy them

Ive enjoyed all your videos MrPete. Congrats on 300,000 subscribers. Have a great day.

Thanks Mr Pete.

I originally started watching for machine work. I enjoy your humor and more recently life stories. You might consider visiting some of your viewers shops. My passion is machining but my current place is in shambles, I haven't had time to clean and straighten up because I'm working towards getting a new shop. I'd love to have you visit after my new place is built.

My thought on the Chuck Key is if the T-handle moves as you tighten the two other points then it does some good removing “play in scroll” at each jaw. How to quantify no idea.

Mr Peterson,your workshop tips on milling, turning and explaining what might seems rudimentary and mundane to the boffin's on the internet! To people like me who have a small lathe and milling machine starting out in a venture to keep me occupied. I have always fabricated all my own steel work,motor mechanic all repairs,done my own carpentry and plumbing but have always been frustrated because I had to take little turning jobs to someone else.Thank you Sir for all your videos, may God continue to bless you with strength and health to continue your invaluable videos.

I had three of those Standard drill indexs. All the same design, but all made from different materials. The oldest was cast iron, The second oldest was cast aluminum or zinc and the third was made of plastic. My lust for money had me sell them on eBay about 15 years ago. I have always enjoyed your videos. I have learned a lot watching them. Thank you.

My shop teacher collected antique machinist tools.He got a Starrett self calibrating 1" mic. It was about the funkiest wunkiest contraption you ever did saw.It had a leather holster.I bet Pete got a few of those!All the Norwegian seamen used to live in a certain section of Brooklyn when I was a kid.No more!Now all hispanics and asian peoples

I was taught to tighten a drill chunk at all 3 locations. The reason is the ring binds against its constraints. By moveing to the next spot you can get a tiny bit more rotation because you're then pushing it away from the airea where it is bound and pulling it farther around. Think of it like pushing vs pulling, pulling something through always takes less force than pushing it. By moveing around the ring you are now pulling on the airea that you were previously pushing so walks the ring around a tad farther. It does work, you do get more rotation with this method. Same applies to a scrolling lathe chuck but I think it slightly more relevant to keyed drill chucks.

I've always tightened lathe chucks and drill chucks at all three holes. You get a tighter grip that way. You can prove this two ways. One, if you apply the same torque on all three holes you will find that further tightening occurs on holes two and three. Two, you can also prove this with a drill in a drill chuck. It will take trial and error but you can show that a certain amount of torque on one hole will cause the drill to spin but the same amount of torque on all three holes will hold securely. I thought this was common machinist knowledge. An old machinist taught this to me, and I have observed the difference.

Agree with the person who mentioned older chucks still moving a bit on the 3rd. I once heard some urban legend about getting better centering by being quite gentle on the first two tightenings and firmer on the last, and I believe that's helped me in the past.

I just became #999. I have missed a few videos but always enjoy catching up.

You were talking about views and things like that. I don't know how to help you on that but I do appreciate you make the videos you do make. I like watching your videos over the stare it or what other micrometers or tools or things like that? Your audience may be small, but I'm betting they all appreciate the videos you put out

A good friend of mine for the last 67 years is Norwegian. I use to go with his family each summer to The Sons of Norway picnic in Northern California.

My notifications work well and I always go to your channel first. I love your content so you are first on my list. I must admit that the other reason you are first is that I may just doze off later and I don't want to miss anything, grin,,,,

Sorry, cant help with the chuck key question. Seems unnecessary 'tho. Grieving for both your bridge and the Mill that got scrapped. Thanks for all the stories. 🇮🇪

always wonderful Lyle....best wishes, Paul

always appreciated the content, hope this small comment helps the algorithm .

Bridges were also covered and partially enclosed to prevent horses from balking when seeing water on both sides, leading to backing wagons and buggies off a bridge into the river. This may have been the primary reason with preservation of the structure an added bonus.

from what i haw heard some of the good u tubers say is that it helps on getting the 3 jaw to center better

It should be 3.3 million Subs. I was an early subscriber of yours. Do you remember the video I sent you of my daughter running a mill and Ititleed it “my auto feed”.

I had also heard that covered bridges served another purpose to protect horses from spooking due to high bridges, wind, and to keep the floor/deck of the bridge from freezing over and making it tough footing on the horses. That and they still look cool!

There have been times I didn't get any notifications of your new content. I just clicked the bell, we can choose All, I'd guess that would be all the channels we subscribe to. I chose Personalize. I think that means your channel only. Wink wink, you could warn us beforehand to take notes. : - ) This video is chock full of updates and info. Oh, then people like me would type for an hour... Rant on as you feel. It's mostly very good ranting!

Thanks for the great video! As to chuck tightening, I do a similar method to the one in your vid. I don't bear down on the first lug though, I tighten a little bit, then move to the second lug and tighten a little more then on to the third lug where I give it the full Monty! Why? I have found this method really helps to get the force more evenly distributed around the workpiece, helping with concentricity.

I'm watching, Mr. Pete!

Thank you, Mr. Pete .The kids grow up so fast. I remember when Henry fit in your toolbox. Lol . I met Henry at your, meet and great. I'm the guy that brought the bottle of honey. etc.

Hi Mr. Pete, I have a basement shop as well, and I enjoy your videos. My collection isn't quite as large as yours, but it's probably close. I have the same 0-1/2" micrometer, a Unimat, a Sherline, an old South Bend, a Bridgeport V2XT that I converted to Mach 3 and built a 4th axis. My day job is as a lead Mechanical Engineer designing medical devices and mentoring younger engineers, my side job is an educational toy company, and I enjoy showing my kids how to make almost anything they want. Keep up the great work! I always learn something new when watching your videos.

My thought about the chuck key sequence is this: My modeling uses micro-sized drills. In order to get the drill to spin true, I have to carefully rotate it in the chuck and then evenly snug all three jaws. If a test turn is not true, I repeat until it is true. My other thought is that it may not matter much for the sizes of tools usually seen in these videos, but in my case (0.15mm) the fitting of the chuck or collets is critical. I sent you my brass / plastic mallet photo moments ago. It would would be great if seen in an upcoming video so I could brag to my friends and become famous.

I've used the tighten every hole , only to actually trim the runout of certain pieces. Oddly it actually works. As for the Jacob's chuck, I tried it and never found it to help w runout, but a well worn old chuck, using more than one hole to tighten can actually increase the tightness. Not by a great amount, but.... I was using a ft lbs torque wrench to check , boredom is brutal!! An old extension that had snapped was ideal . Oddly the using evert hole seemed to help on copper, brass, and bronze stock. Hex, Sq etc.

I was told that a Jacobs chuck needed to be snugged tight in all 3 holes to prevent slipping. Have I always done it? No. Have I had drills slip? Yes. But that is not conclusive. In my opinion the lathe chucks would not be benefitted by repeat tightening. Again, sorry I have no proof, and I doubt that there is any proof out there. It’s just another foible. We out here who watch each video as it comes out appreciate every bit of your productions! Thank you, Mr. Pete!

Ran a big Monarch with 38" chuck and many hours of use with 3 shifts use. If a heavy part was only tightened with one position it would run out bad the scroll plate was loose in chuck if you used all the key position it was much closer

Concerning the tightening of the chucks. As a retired machinist of over 40 years and a hobby machinist of close to 60 years, I tighten all 3 points on both lathe and drill chucks. It is the way I was taught in tech school. My instructor had worked in a bearing factory when America still made much of the ball bearings in the world. We tested this in school and he was able to demonstrate that work pieces ran more true and drills were less likely to slip if this was done. Of course, any accurate work had to be done in a 4 jaw. On the subject of chuck wrenches and keys; in your hand always. NEVER left unattended in the chuck

No I’m still alive Mr Pete and hanging in there with you and pressing like each time 🦘

when I was in my first assignment after finishing my millwright apprenticeship, one of the best of the craftsmen I was working with (he had also been a machinist) told me to tighten a portable drill Jacobs chuck in each of the three holes because the smaller size drill bits would slip. I've been doing it that way for over 45 years and it seems to work. Of course most of my newer drills don't have Jacobs chucks.

I enjoy watching the shop stuff (and the old yard sale vids); never thought of subbing, but now I am :) I work at a trade school by the way, in construction. The amount of people who have no idea what old hand tools are and what they're used for is staggering - most of the teachers are of the "that's old junk, throw it away" ilk. I put it in a box and use it myself; they are joys to use. Meanwhile we go through six or seven cordless toys every semester. Oh well.

I watch for the shop

Ok Pete, just depends on chuck, might get a bit tighter but. I was told long time ago pick a spot to use. Use that spot to tighten and grind in jaws, use it and if scroll diameter had any looseness you would have less runout. Story time, old timer I worked with, ok he was only 56 at time, but that was 44 years ago said he was working in shop and Forman came over to him and asked if he had ran a big lathe before, he answered that he had. He got put on big machine because the guy who was running it scared Forman, he was afraid that other guy wasn't tightening chuck good and parts were going to fly. So he put Melvin on that machine. Melvin knew how to tighten a big chuck, watched him tighten a 15" 3 jaw many a time on the old Gisholt.

I have those 2 drill indexes along with many other styles. I spent far too much to collect them. I will get a display case one of these days...I always tighten all three places on my drill chuck. I was taught that way from a machinist 55 year ago. I may have had something to do with the very old check on the lathe but once learned I continued to do it until all my battery powered drills are keyless. jack

I tighten my Jacob’s chuck that way. But it’s just habit, my grandfather taught me to do it that way and it was to wear the teeth even and to prevent damage to the chuck by clamping down on a drill bit crooked or uneven. 🤷‍♂️ that’s what he told me and I’ve done it that way ever since. So about 30 yrs.

The tightening of chuck wether lathe or drill or any chuck with multiple points it and was taught to me as it evens out the pressure on the worm gears or cage take it or leave it but there you have it simple really Cheers

I have a small 1/2" Starrett mic and the anvil is rounded. I suspect for measuring the wall thickness of tubing. I was told when I was a kid to tighten a drill chuck with all three holes, I never do! However with a lathe chuck Robin Renzetti mentioned and I think it is a solid idea, to use one or the same pinion to tighten the chuck as the tightening force on the scroll is always the same place in the chain of events each time. As a matter of fact my 8" Buck brand adjust tru only has one pinion to tighten it. That's my understanding Mr Pete.

300 thousand people with good taste 😊

Lyle, just so you have it on the radar, I subscribe to many machining channels, including yours, and find that when I'm not seeing one, and go looking for it, the "subscribe" is still an outlined bell, but it not blacked in as I had it. RU-vid is apparently changing it. Just as a Jacobs chuck, tightening all three does, indeed, tighten down on the tool or workpiece more securely. I learned that from my father, who absolutely forbade ruining one of his drill bits by "shanking" it.

don't be alarmed by low numbers. I started noticing a bunch of machinists whose numbers are way down. There are a few that are on the way up though. Just keep doing what your doing...

Your videos only show up on my feed on Saturday. The rest I have to search out.

Now small micro breweries are all the rage!! They are everywhere!! I know young guys that would kill for that old Grieves Mill. In my old high school shop we had a Brown & Sharp Horizontal mill and a Cinncinati Vertical mill. Both in excellent condition and used by only a few of us willing to learn how to use them and make great projects. One friends Dad was a machinist and he taught a few of us how to be half decent machinists in his business shop so we could use the school equipment. Our shop teacher was a wood guy, knew little about metal working. Me and another kid taught him how to use a metal lathe and the mills!!! (After college I became a T&D guy better money than being a teacher!! Years after I graduated fro HS they closed the HS shop and terminated classes because of concerns for liability insurance issues and sold them and the whole shop for for scrap. One clueless jerk kid was screwing around one day not paying attention while using a 40" big disk sander and lost three fingers. That was the end of shop class forever!! I tried buying them and other shop equipment as did others and the school lawyer said they could not sell the stuff for fear of getting sued if someone got hurt using them!! (the school got sued because the kid lost his fingers, even though he was horsing around) Sorry but schools these days are run by (excuse my language - assholes!!) I went to college to be a shop teacher, but found working in industry paid far better wages for trained and apprenticed tool and die makers, so I did! Good old days are gone Peter!!

Lyle - Enjoy that time with Henry, they grow up too fast and my youngest (granddaughter) will be 14 in a few weeks. Keep up the videos - they are all interesting and I'm always learning something. My engineering analysis on the 3 jaw chuck - as mentioned by at least one other poster. Probably no advantage on a 'perfect' scroll and gear. However, if even slightly worn there would be just a bit of clearance that would allow it to tighten a bit more on the second or third point. Might well not be noticeable on your 'calibrated armstrong' automated tightening mechanism. One of my profs from almost 60 years ago could have had us running in circles with that analysis! Have a great weekend.

Hello Mr. Pete. Norwegian checking in from Helmar, IL.

I was taught in the 1960s to tighten all "sides" of a drill chuck, because that way you don't *have to* give it all your strength. I would (and still) do the same with scroll chucks. Conceptually, maybe it "evens out" the stresses, and maybe it spreads the friction across more of the friction surfaces. Some time around 1999 I found some skepticism because an experienced machinist friend called it silly. WE did some testing and at that time concluded that it probably was *true.* Today, I could not recall exactly how we considered our testing "scientific," but my way *did* convince a senior machinist (who is gone now). One thing I insist is that you DO NOT give the first "side" all that you can. A very simple test you can do (which, honestly, proves almost nothing) is to give your "medium" strength to all sides of a Jacobs chuck and then when you get around to the first one watch it if even moves any more at all when you give it just a little more. A complimentary test to that one, which I recall my old friend doing, was with a scroll type lathe chuck, put in a part then give all you can to one socket. Then move to each of the others and check if you can get any movement. We always did get at least movement of one more of the pinions. And sometimes, by chalking the body of the chuck, we detected further movement of the scroll! So yes, I do say it works and is a good idea. BUT I will admit that I do not recall just how scientifically valid and/or significant our testing was. It simply was and remains "good enough for me" because it only takes the investment of an almost negligible further effort. Kind of like shop safety - it definitely doesn't "hurt" anything.

Mr Pete really liked you You're adolescents juvenile delinquents stories of the young Peterson lads

Lyle, , it should be sufficient to tighten the chuck using just one of the holes, because the jaws are interconnected via a scroll gear, and move an equal amount at the same time. So, and I think you agree, that when you tighten one socket, you’re effectively applying pressure evenly across all three jaws, so there’s no need to put the chuck key in the other two holes.

Robin Renzetti was a guest on Episode 10 from The Home Shop Machinist podcast, he said (time he discusses chucks is at 1:40.10) to only use one chuck key hole so you can repeatedly place the load on the scroll the same, as changing wrench holes moves the the forces from a different vector.

On the chuck tightening, I theorize they think they are centering up the scroll plate within it's bore clearance which would of course be part of the noise in the centering of the jaws.