Hey everyone, yes, obviously it was a typo that I said 4” is 25mm. Rest assured the quality control department has been shown the door once again. I went down there the other day and it was all screaming chimpanzees. Why did I even hire them?
Ah, but wait long enough and the Chimps will write the works of Shakespeare out for you. Or you could just watch the plays ...... Seriously, thanks for this, it was interesting and useful. BobUK.
Yeah, I don't see how they missed such an easy conversion. Now I can understand if they were converting say, feet to psi. Heck, I bet even a smart gal like Quinn the Magician has to double-check her math on that one! I barely remember the formula for determining the modulus of elasticity of a bushel of apples. Pretty sure it has something to do with euros and pounds. Or is it yen and yang? Yahtzee and a tomato sandwich?
Just wanted to say, worked in job shops over 40 years and just retired, enjoy your content and do see some missteps but don't take that wrong, I've made a thousand of them myself, not just in the beginning but right up to retirement. I've found out something obvious, what seems easy in a full shop like at work is not even close to the challenges you face at home with a modest shop that you've been able to aquire over time. I enjoy your content, research, and ability to admit when you goof up, we all do it! Thanks for all the effort you put into it and keep up the good work! Just sayin.
Bi-metal holesaws are also very effective at trepanning in the lathe. Keep cutting fluid on the cut and frequently withdraw to clear the chips from the teeth. The deepest I've cut with this method is around 35mm. Also check out David Wilks channel. He is a master of deep trepanning on a centre lathe.
Ive heated canned soup on a mud pump engine (DD 6-71)manifold many times. When time was short, I made a wire basket to hold the can down the exhaust stack. No vent, unless you like the taste of diesel soot but be sure to not leave it too long! My favorite was an episode of "Home Improvement" where a contruction crew made grilled cheese sandwiches with a propane torch. Gotta use the tools available!
For the thrifty, there's another benefit to trepanning bean cans. Leave a few metal chips in the sauce and you won't have to pay an oral surgeon for your next gingivectomy. Moving right along, those chips might remove any pesky polyps in your colon. Seriously, great work! Loved the mini-tutorial on cutter grinding.
Gday Quinn, very well explained, now I have a new lathe with more rigidity I might have to grind up some tools I think, thank you very much Quinn, one of my favourite channels, always something to learn, take care, cheers Matty
❤Loved it quinn, you make me smile often while watching your videos. Yep definately an entertainment component to your delivery of good solid content. Thanks quinn I appreciate your work 👍😊
Great work, thanks for the video. I would like to point out that when opening a can a sharp roller is better than a trepanning tool as you don't get chips in your beans.
Hi ! I just finished your Lathe skills series , and I must say wow ! Your videos a awesome. I've watched countless youtube videos on machining , and found yours to be the most help full for the hobbyist. I find your videos are very informative , detailed , well laid out ,and easy to understand . The information here has filled in years of trials and errors I've made with my little lathe . Thanks again and I look forward to watching the rest of your great content !
You ABSOLUTELY read my mind! I was literally just wondering how to preform an operation like this for a project I've been working on. You, as always, are an invaluable source of great information. Thank you for being so awesome! My next project involves cutting a keyway on the lathe or arbor press, but as a hobby machininist i cant invest in the broach set so, maybe next week you'll have a video on how you made a custom lathe tool post or arbor press keyway cutting jig haha.
Also cool factoid about skull trepanation: there are skulls we've dug up that show the owners survived three sequential trepanations long enough for the bones to regrow as much as they do, and we don't really know how they managed to prevent infection.
Great tip and time saver. Just trepanned a 4.5” hole in a 5.375” x .750” billet of aluminium. Machine half way through then turned billet and machined from the other side. No great pile of swarf just a nice billet to use on another job. Thanks for the tip and keep em coming. Not sure you method of opening cans is that efficient though.
To accompany your trepanning of haricot beans, what about milling the top off of a milk bottle, used to be trick on glass bottles with crimped steel caps. Great vlog Quinn, thanks for sharing.
Hi Blondihacks. B & M are my favorite beans. They are really good mixed with scrambled eggs. You really do great work. Your humor is great. I laugh a lot. Best regards.
Pro Tip: When having beans for breakfast, don't EVER decide pancakes would be a good side dish. When those sweet Campbell's Brown Sugar Beans first came out my two girls were little. The beans were so sweet, one of them said we could use eat them as lumpy syrup on pancakes. They used to use any excuse they could to get me to make pancakes since I made small, 'silver dollar' pancakes, and typically devolved to all sorts of shapes. Pancakes and brown sugar beans, it is, says I, to a round of cheers. We made them, ate them, and proceeded to toot our appreciation for most of the day, accompanied by much laughter. Mom even got in on the 'symphony', much to the girls delight, (they were used to hearing dad's 'musical' talents.
So literally all I do at my job is trepanning cast iron. We have an array of trepanning tools that can drill up to 11.25" ID and up to 36" long in a single pass. We can also flip parts to do 72" long things. It's pretty fun. But very noisy. With lots of coolant. We use Warner and swasey, and Gisholt giant hex turret lathes with 28" Chuck's and 12" spindle bores.
Just a few days ago I used a large dia hole saw (good quality carbide tipped) for the same purpose just happened to have it available. Worked great. Very quick alternative If you happen to have one
nice touch with the beans - the only appropriate brand of beans for the model engineering enthusiast. There's also B&M canned bread, which is not nearly as difficult to catch, but you do have to flip the can in the chuck to get both ends off, and heaven help you if your bread is not concentric.
The term 'trepanning', in the hole-in-the-head sense, is used interchangeably with 'trephining'. The tool, for cutting bone, is simply a hole saw which can be either operated by a powered drill, or more simply have a handle for manual cutting. A hole-saw on a handle is often referred to as "a trephine" or "a trepan".
Quinn, if you want to see someone doing some really hardcore trepanning on some fancy metals, then you need to check out David Wilks channel. He is from Sheffield, UK, and most of his current videos are from when he was running his own business. He now works for one of the firms that bought several of his large lathes. He has some work coming up trepanning some large round bars of something exotic and they are 4.5 metres long. He also has a couple of videos showing how he makes his large trepanning tools. Like I said, it's hardcore.
Nothing better than shop made beans. As for the use of the ring: If the inside diameter was slightly larger than the can of beans, you cover the partially eaten beans with wax paper then slide the ring over the can to re-seal. ! Nice Vid!
Thanks for another nice lathe trick :-) One question though: why do you grind clearance on the inside side of the tool? The inside radius should provide plenty clearance, and not grinding on that side would leave more support for the cutting edge. Do I overlook something?
If anyone wants to buy a tool like this ready made, commercially these are called "Face Grooving tools", rather than trepanning tools. Hope that helps.
I'm wondering if opening a can of beans featured in the development of the vertical lathe? Also, did you freeze the can to thwart gravity when the job was done? Wonderful intro to the link to Tom's video! Stefan G has a more prosaic demonstration, and NYCNC shows the extremes that are possible with trepanning.
Actually the classic definition of trepanning is whole-ly appropriate to Holloween and Day of the Dead. Tis the season. Also good for motorcycle club paraphenalia. Won't see beans on Clickspring, either. Another fun video.
Back when I was a Neanderthal*, they told me this operation would release the evil spirits from my head. Now Blondihacks is telling me it's a different thing altogether. Jeeze, no wonder I still have evil spirits in my head. *Edit: Cro-Magnon.
Thank you for this video! I just completed my first successful trepanning cut. Took the center 5" out of a 8" piece of steel. Once I watched your tool grinding about 4 times I finally got it right and it went great!
I think two of the biggest things I've learned from this is.... Catch the beans when you're using the precision can opener and if you don't know what to use a disc for, use it as a frisbee
There's an English guy David Wilks who also makes frequent video primarily around a Trepanning Production job shop. Stuff much bigger and has some excellent videos for those interested.
My last job before I finally found a place to rest in the shade and use the crotchety old guy voice I'd been practicing (hey you kids, get oo of my lawwwwwwwn) I had to regularly do face cuts in stainless steel machine parts to update the parts to match the current design in use. These were on centrifuges used in waste water facilities. All feeds were done with the compound set parallel to the axis of the spindle. You have more control over the feed rate and depth this way.
Since the season is nearly upon us here in the United States, for those so inclined when called upon to lend a hand, I am quite confident this technique may also be used for opening the cranberry sauce if the kitchen is getting too crowded.
This was odd, as I knew the surgical term of trepanning, so I was very curious how you would accomplish that with a lathe. Glad it ended up being metal surgery.
So pleased you take your videos seriously. And not doing flippant stunts for effect like others do. 😀😁😂😂 Cannot believe I did not think of using the tail stock for squaring up tools!!! Thank you for that one. 😎
Cutting the can of beans open was the most hilarious thing I've seen from a machining channel! That said, heating food up in cans that have coatings isn't the healthiest thing in there, but I'm sure you and your viewers are aware of that.
I Love to work with 2024 this material is amazing and even heatthreatment is in the homeshop possible 2024-0 for easy machinig and tham hardening to the t3 state and get strengh like mild steel
