ER Collet Block Depth Stop 

Only Matty's Workshop would make his own threaded rod! Good result overall mate. All the best. Cheers

Whenever I made a slight hic-cup on a piece of a jig or tooling for in-house use, it would become a prototype or proof of concept piece, if it worked it was fine. If you ever meet an engineer who claims never to have made a mistake, they are speaking with forked tongue. Good job Matty, stay safe and well, regards to all 👍

You need more slots in it. Each piece goes 1/4 of the way around so they don't want to flex

Hi Matty, a great idea! I would suggest additional relief cuts every 45 degrees to ease the expansion of the taper. This will also work as a lathe spindle stop.

Hey Matty. Flash job mate. The internal female expanding bit, I cut a groove also.. but on the outside, end of the slots near the shoulder., also cut 3 slots., ie 6 segments..! You'd be surprised how much movement the collet makes,.. even Hand Tightened. ... and, for the male expandy bit, I used a 12mm bolt, and booker rod/all thread for "The Adjustable Stop." Amazing watching you do and explain it, how much work there is in it.

Can't wait to see you use your new tool. . Looks perfect. . Good to hear Mrs. Matty on the video . . fantastic.

For a self taught turner you ought to pat yourself on the back for the jobs you do, superb work Matty.

Nice job Matty! Yes I thought you were being very hopeful at single pointing the 8mm thread that long, but you did it mate. I though to myself "You jammy bastard," when it threaded on with no drama lol it clearly was a quality piece of steel with the right amount of toughness to resist the cutting forces of the tool. All in all mate it turned out very well. You are a much better machinist than you give yourself credit for. I think I might give one of those a whirl, the only thing I think I would do differently is to reduce the angle to around 6 degrees included instead of 10. It should make the deflection a bit easier and enable it to be done by hand. I will also do 45 degree slots to double the "petals" that expand. That should make it easier to expand it by hand. I hope you are feeling better after your treatment Matty and things are going well for you. Cheers from the UK. Sam

Great job Matty. Looks a treat. Put 8 slots in the taper and it will nip up much easier. The 1/4 of a circle does not like to move whereas an 1/8 will. Printers are a good source of all kind of parts. ATB regards from the UK

Hi Matty 👍👍👍👍👍👍Great job as usual Exactly right sometimes the best projects are made up as you go ATB Kev

Hi Matty, I haven't looked at other comments so someone else might have made the same suggestions. On getting the tapered fingers to spread easier, make the taper only about 10 mm long (deep) and then bore it out behind. You did some but maybe not enough. Also cut another four slots, total eight. On the "drawbar" part, cut the taper only for about 5 mm and cut clearance behind. That way the "fingers won't be so stiff and the tapers are only working against one another over a maximum of 5 mm. At the moment you're working them over about 15 mm though you did undercut them behind a bit but still lots of drag. Otherwise a pretty good idea. Might just try one for my ER 25 ones. As big as I go at present. Already have a couple for the 5 C collets. Thanks for the video, stuffups and all. Regards from "upover" in Canada's banana belt.🤞🇨🇦🍌🥋🇺🇦🕊️🇦🇺🐨💩💥🏁👍

G'day Matty. Excellent build, & lots of food for thought. Looks Professional & it works 😊 Keep up the good works

Matty, I was going to recommend that you cut more slots in the female taper, but I see that several others have already done so. If your coffee-colored coolant smells bad, look into getting an anti-bacterial additive for your coolant to kill the oil-eating bacteria. If you've got oil floating on top of your coolant in the sump, maybe get an oil skimmer to minimize the amount of "food" you're providing to the bugs. You might also consider adding a filter to your coolant system. If your sump is full of crud, you'll want to clean it out before adding new coolant to it so that you don't immediately contaminate the new coolant.

Another awesome video Matty. Keep up the great work. From kiwi land.

Nice build! Taper ... it's the only thing I might have done different ... 8° (16 included) would have been my choice .. that's the standard for er32 collets and some engineer WAY smarter than me figured out it works best for such applications. Thanks for sharing 🇨🇦

Hi matty hope your treatment is going well ,you’re looking good . Looks like a good project as I have a set of those collet blocks I bought for my retirement projects if I ever get time between doctors appointments and favours for friends,lol all the best John😎🐈‍⬛🇦🇺

I can see that being a very useful tool Matty , great build ! Enjoyed ..👍👍

Nice job Matty 👍 A man after my own heart - don't throw anything away without first stripping it down and saving anything that may be useful (albeit in 18 months 😁). All the best, Paul

Hello Matty. That's a brilliant piece of kit. Plus designing and machining all the fiddly bits on the fly...that's impressive. Well done, mate. Cheers.

Nice design Mattie, it looks like it could be used like a lantern chuck as well. Enjoyed, cheers mate!

Very nice work Matty. Sometimes you just have to jump in and make it up as you go along. Keep well mate. Cheers Nobby

That's a good solution! Thanks Matty.

My old man (RIP) woulda said that piece of rod has been laying around on your bench since Adam wore short pants and played full back for Jerusalem. 😜😂😂 Yet another great build Matty, & a pleasure to watch. Keep up the good work. 👍👍👍🇦🇺

Very good job matty,,thanks for your time

As I can see, you use printer parts too. They are very nice pieces of steel. Nice little build, Matty. And I share the same idea that I read in the comments. Double the number os slots in the taper and it will work just fine.

Well made, Matty. Very useful bit of kit.....Tony

Nice job Matty👍🏴󠁧󠁢󠁳󠁣󠁴󠁿

Good work again Matty. Maybe the taper needs more slots? The ER collets have a lot of slots and they tighten up quite easily.

Great build Matty. Not seen one of those before. If I used mine enough I might have a go at making one. Thanks for sharing the video. Steve.

Enjoyed..nice build, hmmm got me thinking if I can adapt my 5c threaded stops…add to the list😂😂

Nice to see you back in form mate I enjoyed this

Well done mate 👍

Estimado Matty, vivo del otro lado del mundo y veo todos sus trabajos, usted es admirable como profecional y como persona. Aquí en Argentina 🇦🇷 hay muy pocas personas que reunan esas cualidades al mismo tiempo. Le envío un afectuoso saludo❤👍

G'day Matty cool video mate

Good show!

Very nice job...Thank You...

another nice job there simple and easy as you go job thanks for sharing Cheers

Nice little free build! All the best, Matthew

Good old printers and photocopiers, great source of rods, springs and all sorts of other nick nacks that might be useful at some point.

Gday Matty cool idea lots of fun little operations I'll look at doing something similar for my collet blocks

Great Job Matty. Thanks for sharing.

Great job Matty. Most of the time when I have an idea for some tool I what to make I make as I go also. Cheers

Great addition to the shop Matty, very useful 👍, nicely done. Having the rod coming out so far will be handy for caps etc. Thanks for sharing

Nice job mate

great vid as always

nice build..

Hi Matty. Absolutely loving your channel!! I've come here from Steve's recommendation (another awesome RU-vidr!). In the few video's that I've seen, I've already learnt a heap of new processes and techniques. Liked and sub'd. Looking forward to the next vid'. Cheers, Pete. 🙂

Excellent job Matty, the fly cutter saved the day,lol...great video, keep'um coming..

Great video, Matty! With regards to the "8mm Rod", yet another case of "I'll keep that, it'll come in handy" triumphing! Cheers from the UK!

Nice job Matty. GDay.

Thx for the vid.

Worked out fine in the end, I would have thought a shorter taper on the inside part would work better, as is you are trying to flex the whole length of the cut-out, all it needs is a small part of the tip to flex out in order to grip and spread, probably 10 - 15mm would be plenty taper on the plug, this will make it easier to tighten by hand too.

I'll take 2 Matty! I need them by Monday :P You are looking good, mate!

my er40 collet blocks came threaded both ends for collet nuts so I use a 2nd nut with a 6mm collet holding a rod as my depth stop. Your impromptu redesigns came out ok. Thanks for sharing! 👍

Ģreat work m8

Nice work Matty, warts and all but why not just thread the ends of the collet blocks and use the same idea for the stop but without all the screwing around with having an expanding taper.

If you put more slits in say 8 it should tighten up easier, as you are now trying to bend a 1/4 circle.

Another well-made project Matty. 👍Tis a good idea that one, but not being able to single point on my little lathe could make it a challenge, I'm wondering if maybe I could make one using a 1" or 25mm bolt 🤔

Interesting build. Thanks for the video. It’s good to see someone else besides me over shoots threads sometimes. How about cutting four more slits in the collar, to let it expand with less pressure? I’m now subscribed!

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Hi Mat I would put 8 slots into the female fit but only going half way on the new four cuts

Nice build Matty. A thought on the taper....what if the male and female sides were a half degree off so they first engage as an interference then spread out to match? I too think there needs to be more cuts to have thinner sections.

Hi Matty, great job. I was wondering if you would be able to make that threaded rod, but it came out right in the end. Regards, Dave

Nice job mate, never going to look perfect if you are just using what you have lying around the shop. Perfection costs brass and tin usually. Carry on cutting Matty.

Matty, I am having another look at your work. Could you come up here to Central Qld, Tungamull now..😊 I have a million ideas, all the goodies, but have become to Ken Lazy to do the work.😅😅😊

16:49 Hi Matty This looks like a super little project and will be very useful. Could you possibly give the basic details of your main lathe and milling machine as I am planning to upgrade very shortly as the small lathe I have is too small now. Thanks for the great content and keep healthy. Greg Tutin Launceston TAS

Really neat & simple Matty 👍 Robert

A fun little problem solver there. As mentioned with a couple more slots cut in it it should grab way easier. It sounded like it was really coming down on your roof. Are you in your rainy season there?

Worked out ok in the end. What medication have they got you on Matty? , you don't seem your usual smart self. Sleeping ok ?

Hi Matty. Do you think that reducing the length of the external taper to something like 5 or 6mm so that you are only trying to deflect the tips of the slotted section would make it more sensitive.

my coolent looks like that all the time may be a bit more yellow

didn't watch it all, sorry if I missed something but how can you hold something at the tip of an ER?? ER collets need a minimum engagement length, or else they collapse

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Hey Matty great job as usual ! Do you think if you put more slits in your tapered collet it would make it more flexible and in turn make it easier to tighten up? Just a thought. Cheers