Low Profile Mini Mill DTI Indicator Holder for Hole Alignment and Centring

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As a bench top mill user, I often find myself with too little Z height when trying to centre an existing circular feature under the spindle. This rack and pinion DTI centring attachment made from a repurposed microscope stage gives more headroom than some other methods, and was a nice project to introduce me to cutting dovetails.
Activities include cutting a female dovetail in brass, making fluted knobs without the use of a rotary table, threading with a tailstock die holder and general drilling, milling, turning and tapping.
For clear and easy to follow information on measuring and making dovetails (and just about everything else machining related) see Mr Pete's@mrpete222 channel:
• MACHINE SHOP TIPS #75 ...
• MACHINE SHOP TIPS #76 ...
• MACHINE SHOP TIPS #77 ...
If your maths is as rusty as mine, I can recommend Mark Ganson’s online dovetail calculator
mwganson.freey...
Construction details for the homemade tailstock die holder used in the video: • Building A Tailstock D...
Approximate imperial sizes are shown. They're not direct equivalents, but are intended to give the non-metric viewer a rough feel for what I'm doing.
Made with subtitles -click the CC box.
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Filmed and constructed during March and April 2020. The only place I could find a quiet spot to record the commentary during the UK's Covid 19 lockdown was in the car, hence the unusual ambience.
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For the material I couldn't capture myself, my thanks goes to the following:
Drew Garrett for the use of his stills of the Verdict centring attachment.
@Swisstoolmaker for the use of his video of the Hauser centring tool.
Check out his RU-vid channel at
/ @swisstoolmaker7684
Whoosh by Aysonny
freesound.org/...
Licensed under a Creative Commons Attribution 3.0 Unported License ( creativecommon... )
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Shot: HDC-HS700 1920x1080 50P AVCHD
Edit: FCP7 ProRes 422
Mic: DR-05

Опубликовано:

5 окт 2024

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Комментарии : 94

@BloopTube Год назад

Can second the usefulness of that dovetail calculator, saved my ass in school.

@bobengelhardt856 7 месяцев назад

Beautifully made and video'ed . I can imagine that making the video was WAY more work than making the holder. Thank you for the gift of it.

@rbclima 4 года назад

Wooow, that's some serious video quality in there. It reminds me clickspring with less handwork. Respect!

@mrporridge2304 Год назад

really nice mate, the little gripper jaws to get hold of the DTI body is genius... very trick.

@skysurferuk Год назад

Your presentation skills are matched only by your machining skills. Superb! Subbed.

@nadam35 3 года назад

my favorite part of this vid was seeing the kit box for the die holder. 2nd favorite part was the use of acetone.

@Stefan_Boerjesson Год назад

Great work. Not having that microscope parts it will have to be another design, hopefully less advanced/complicated. Thanks for the idea.

@GavinM161 2 года назад

Your effort looks much better than both those commercially available holders. Nice work!

@TheRecreationalMachinist 2 года назад

Thanks for watching!

@randywl8925 4 года назад

I'm building a repair tool to cut a circle from damaged vinyl flooring, then cut another circle from a leftover piece of material to replace the damaged, ripped or gouged piece. It's not going to look like a version that you made. Ha, not even close. Dang, I wish I had a small lathe and mill! Love the stuff you show and especially the details in your explanation. Very nice to watch you go through the process.

@carlwilson1772 4 года назад

Fantastic to discover another British machining channel. This is real genuine quality. Subbed.

@tomsdreamshopworx Год назад

If you going to do it, you might as well overdo it! Very nicely done.

@Etna. 4 года назад

Dang, this thing is beautiful! I love selfmade tools, because they always show the love and passion of the builder. Regards, Etna.

@daveduncan9005 Год назад

I love the presentation. I figure RM has blended the best of Click Spring and This Old Tony into a very elegant, yet simple, precision machining channel. Thanks, RM.

@eatenkate 4 года назад

Super happy that you're filming again, a joy to watch!

@gangleweed Год назад

Nice piece of kit......after my own heart.

@Farlig69 Год назад

This is better than clickspring!!!

@MrCoffeypaul 4 года назад

Got to have been disappointed to have seen it was already done but at least we got a class A video 👍

@NickC84 3 года назад

That Collet indexing segment made me think "Damn! Why didn't I think of that??", Could be a common trick but I've never seen it. Brilliant for those of us who don't have a rotary table (yet) and need to do some quick indexed milling.

@edcramer6475 4 года назад

It's wonderful when the scraps that are "too good to use" find the perfect application.

@reaper060670 2 года назад

Mate u have got some real skills there.. I've really enjoyed watching ur videos bro.. Keep these awesome videos coming mate.. Love them .. Salute to u SIR!!!

@JB-ol4vz Год назад

Damn fine job Mr.

@Just1GuyMetalworks 4 года назад

Wow, that is really cool 😃. Had a chuckle when I saw you just use the indicator pin straight up in the collet, I literally just did that yesterday to locate a hole on the milling attachment. I know, not exactly spectacular, but it was my first time having to locate a hole, so now I feel like I did it right at least 🤣. Thanks for sharing. You've got skills! Cheers!

@Kevin-gx8lc Год назад

Wow! I think I've discovered a British version of Click Spring. Very well done Sir! Much respect. Greetings from Southport

@andrewdolinskiatcarpathian 3 года назад

Another astonishingly beautiful build. So well crafted. The bonus for me is that I learned that an unknown item in my tool box is a verdict DTI holder. Result! 👏👏👍😀

@peterm4887 Год назад

Great job, I would like to have that in my tool box. I use an SPI version that is basic by comparison to the one you have created.

@fredfarnackle5455 Год назад

Very interesting video, thanks!

@ferguscosgrave7510 11 месяцев назад

Great work

@TheRecreationalMachinist 11 месяцев назад

Thanks for watching 👍 🇬🇧

@StyxHackshop 4 года назад

Beautiful work - love it!

@drpipe 4 года назад

Nothing like re purposing and boy did you do well said b4 your skills amazing both out of the box 💥 and Narration and Video superb. Smashed it again 👏👏🙏

@HexenzirkelZuluhed 3 года назад

Beautiful!

@richardbradley961 3 года назад

THANK YOU.

@RUNCNC 3 года назад

nicely made!

@craigtate5930 4 года назад

Awesome build

@grahameblankley3813 4 года назад

Hi there RM I like the quality of your videos, I have subscribed and I successfully made the rotary Broach thanks very much, from the UK Coventry 🇬🇧👍.

@BrilliantDesignOnline 4 года назад

Brilliant workmanship.

@IBWatchinUrVids 4 года назад

A nice trick for measuring between the pins on a dovetail is to stick an adjustable parallel between the pins, open it until it's tight, then mic the parallel. Nice project btw. :)

@MikeBramm 4 года назад

Nice work. Good you see you back making videos again.

@loricastro3772 4 года назад

Definitely a substitute for Clicksprin! Thanks for share.

@nick1bb1 4 года назад

fantastic!, cant wait for the next project!

@davewilliams6172 4 года назад

Very nice! Can't believe it has taken me this long to find your channel, just a random RU-vid suggestion! Liked and Subbed. I bet you have been busy with all this madness that is going around at the moment, I hope you get the chance to post some more excellent videos in the future, once the work pressure has eased off. Keep up the good work and stay safe!

@hoernst2762 3 года назад

Sehr schöne Arbeit!

@howardosborne8647 4 года назад

You got yourself out of a few scrapes along the way but the final result is a very commendable result. That is a lovely setting tool 👏👏 Edit to add: I'm another one who has boxes with bits and parts of old mechanisms that I find too nice to just throw away. They do come in useful at times.

@anonymousgeorge4321 4 года назад

Very nicely done. Thanks for sharing.

@nikond90ful1 4 года назад

Thanks for the video. Really good production. As stated in the comments, Clickspring-esk is not a bad thing. Keep safe and stay well

@oldschoolengineer58 4 года назад

A very nicely engineered solution and great detail Thanks for sharing

@ColtaineCrows 4 года назад

Nice to see you're still making videos :)

@dinissantiago6729 4 года назад

Nicely made, really nice looking tool. keep it up :)

@arkadiychernikov 4 года назад

Thank you for sharing. Excellent work.

@capitanvonchickenpants8492 4 года назад

Absolutely stunning

@jeroen-surf 4 года назад

Very well done!

@Sqwince23 4 года назад

Clickspring substitute? ;-)

@JT-tz5hp 4 года назад

Hes using the same copyright free youtube music. And when you see a pieces of brass being milled and soldered with that music its hard to not think of clickspring.

@davidkarath6549 4 года назад

Nice job, truly a thing of beauty.... 5*'s

@jasonhumphriss72 4 года назад

Firstly I'd like to say u r a master of your craft. As a toolmaker I rate your work. U done some great videos. Can I ask what make and model are your mini mill and mini lathe thanks

@rickpalechuk4411 4 года назад

Beauty. Thanks for sharing, Cheers

@RaminCreate 4 года назад

such a beautiful Craftwork

@troyam6607 4 года назад

Brilliant!

@TomChame 4 года назад

Very nice!

@reiniertl 4 года назад

Beautiful execution! And you did not have to pay a lot of money to get yours. Sometimes reinventing the wheel is the only way to save your wallet and ... your marriage.

@vallos3 4 года назад

incredible

@AleGlessner 4 года назад

nice video, thanks for sharing!!!

@Tensquaremetreworkshop 3 года назад

Very interesting- a complex build, I make it around 30 parts. Whilst I admire the workmanship, I am a believer in the 'perfection is achieved not when there is nothing more to add, but when there is nothing left to take away'. It was a spur to make my own- the same functionality in 4 parts. I could have done it in 3, but 4 was easier. Question- why did you want to mount both DRIs? The major purpose is to establish concentricity with the spindle- in this mode the readings are irrelevant.

@TheRecreationalMachinist 3 года назад

It wasn't really a case of wanting to mount both DROs, more the ability to mount either (e.g. if one was in use on another setup on the lathe). Plus an acknowledgement that they're not all the same. As mine are low cost items there's every chance they'll fail at some point, and any replacements may have different mounting dimensions. Thanks for watching! 👍 🇬🇧

@KW-tj3uu 4 года назад

Great video. That smooth dampening motion you wanted? Way back when, I managed to hunt down what the industry uses for potentiometers and zoom lenses. Expensive. I managed to find a working substitute for about $7 an ounce in the form of pure silicone plumbers grease for faucets and o-rings.

@gordonjones1516 4 года назад

Grind the tip of your cut off blade with a .5 ~1 degree slant to the left. This will keep that stubby bit on the lathe side and the cut off piece will be have a clean cut.

@nsvasquez 7 месяцев назад

Hehe, "3/4 of a mil." Anyways, subbed.

@pjofurey6239 Год назад

Very enjoyable , and a nice solid useful part.what was your verdict on the STP ?

@TheRecreationalMachinist Год назад

2 years on and the action is still smooth, and I've not had to re-apply any STP, so I'd call it a success. Thanks for watching 👍 🇬🇧

@carneeki 4 года назад

Really cool video! Is this for Emma's spare room toolmaking competition? #tmc2020 it would be a great entry if it were!

@TomTubeUK 2 года назад

This is awesome, what mill do you have there? I'm on the lookout for a similar sized one... the market is flooded with engravers and other unsuitable stuff

@TheRecreationalMachinist 2 года назад

I got it second hand, but I believe it's a Amadeal XJ12-300. Not 100% it's still available, but there are similar models out there.

@richardcooke9948 9 месяцев назад

What they said. Plus yours looks slim and the others look clunky and tall.

@MartynDavis 4 года назад

Where did you get that square face/turn/chamfer carbide insert tool? I've been looking for one since I saw it in a previous video of yours!

@TheRecreationalMachinist 4 года назад

It came from Chesterfield Machine Tools about 3 years ago. They have a web site and a UK ebay shop -see item number 223707202112. It has a 10mm shank so the insert overlaps on 3 sides. I usually use it with a SCGT09T304 insert for aluminium on my small machine, as they're sharper and take less cutting pressure. The way I use it it's ok for just about everything, including light cuts in mild steel 👍

@MartynDavis 4 года назад

@@TheRecreationalMachinist Hey, thanks TRM! I really appreciate you replying. I will check out the site. Thanks very much. Really like your videos!

@Hiyafranks 3 года назад

Rookie question, but how was the brass held in the vise, when all four sides were cleaned up?? Super glued to a arbor and arbor placed in the vise??

@TheRecreationalMachinist 3 года назад

Yes, it was a super glue arbor. Well spotted! 👍🏻

@AdityaMehendale 4 года назад

Sometimes, we should reinvent the wheel. Not because we need more wheels, but because we need more inventors.

@capthowdy126 Год назад

how was u holding that piece of brass in the vise at 2:35 in the video. it looks like it has a round piece under it thats holding it in the vise jaws, but how is it attached to that? id love to be able to square a piece up without having to rotate or flip the part in the vise jaws. pls show how u did this. ive seen some ppl superglue parts to other pieces of metal but i didnt trust doing this myself but is this what u did to hold that piece of brass in the vise with all of the part above the jaws?

@TheRecreationalMachinist Год назад

This was a super glue job. Whilst definitely not suitable for everything, when used with care it can be invaluable. In this case I faced both ends of a scrap of 30mm round aluminium bar. Next I grooved one end end, then took another light facing cut so the surface was nice and flat with a series of shallow concentric circles in the end (these are important to give the glue somewhere to go). Apply spots of superglue all over, then clamp for an hour or so to cure. Sitting the aluminium on the vice base (or parallels) kept the brass perpendicular to the cutter with access to 5 or the 6 surfaces of the block without having to re-set the work holding. The bond is remarkably strong, and plenty good enough enough for light cuts in the hobby shop. Just don't let to work get too hot, or take really aggressive passes. Whilst wearing thick (e.g. welding) gloves apply heat from a small torch and pull until the bond breaks. The glue residue can be machined off (quick) or dissolved with acetone (slow). It's a really good way of making small parts that are as square as your machine is capable of, with minimum effort. Thanks for watching 👍 🇬🇧

@junchang132 3 года назад

好手藝

@adrianohaha7659 9 месяцев назад

I know it's a three years old video, but why didn't you use only the hexagonal collet block, by simply laying it flat on a face, to avoid the need for the second square block? Just sayin' 🙂

@TheRecreationalMachinist 9 месяцев назад

I'd have to re-set the tool height and Y position, but if I'm honest I'd not considered doing it that way. One for next time? Thanks for watching!