Collets for DIY toolpost grinder

If you have seen the previous videos on my DIY toolpost grinder you will have seen it does not have a 1/8inch collet so lets make one.
Drawings are available from here:-
www.homemadetools.net/forum/n...
Bright Wish by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/...
Source: incompetech.com/music/royalty-...
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[@user-ni8lb2vr5t]

Excellent video, the machining shots were really good, really clear shots with a lot of detail, its the best camera work of filming machining I have seen, and I watch a lot of videos of machining

[@CazualHaze]

@4x4 Thanks for the comment, I thought I would put a bit more actual chips being cut in this time.
Cheers

[@joell439]

Well done 👍👍👍👍👍👍👍

[@CazualHaze]

Thank you! Cheers!

[@ocicat99]

Enjoying your videos, yew sound like a Norfolk boy to me (as am I), I don't detect the upward tone rise of a Suffolk boy

[@CazualHaze]

Correct
Cheers

[@boblewis5558]

I don't know if you're aware, but the thread on the end of one of those Chinese palm routers is identical to that of a standard ER11 collet holder. The problem, as I'm sure you are aware, is that the taper angle is different. At some point, when I finish restoring the Myford ML2 I acquired, is to strip down one of those Routers, machine a new taper to fit ER11 collets and use it as a 900 watt spindle on my CNC.
But for your type of project, it would provide a wider range of shaft capacities than having to machine separate collets, although TBF if you only need the one, your approach is probably less time consuming.
I'll probably upgrade the bearings too whilst it's stripped down. But I reckon it should perform as well as one of those mightily expensive dc spindle units and the simple addition of Triac control will give more than adequate speed adjustment.

[@CazualHaze]

@Bob Lewis Thanks for this I did not know the spindle is the same as an ER11. It does beg the question why not the same taper? It is pretty thin so you wont have much material to work with the make anew taper. On another thought you might want a feedback loop for the speed control, my router has very poor load regulation at slow speed. An Arduino with a pid loop will work better. All the code is freely available ( last time I looked) Good luck with the Myford when I started in the hobby I really wanted an ML7 but it was way off what I could afford at the time so ended up with a Hobbymat.
Cheers

[@boblewis5558]

@@CazualHaze don't know if it's true for all. A friend's Makita isn't but all the Chinese ones I've seen appear to be the same. Yes it does seem odd, when ER11 is such a ubiquitous "standard" and they work well, especially the high precision collets ... Why reinvent the wheel and why not increase the usefulness & flexibility of the tool?

[@facundoguevaracastro8337]

🇦🇷🇦🇷🇦🇷👍👍