Which collet set to purchase

This topic has 9 replies, 8 voices, and was last updated 16 October 2012 at 21:10 by Sub Mandrel.

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15 October 2012 at 16:14 #100925
michael chalmers
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@michaelchalmers19148
Will be going to the show this w/e, and nedd advise on which collet set to buy.Have a myford ML7 and will possibly order a waco mill.

Thanks
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15 October 2012 at 16:14 #6386
michael chalmers
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@michaelchalmers19148
15 October 2012 at 18:45 #100941
Bazyle
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@bazyle
There was a similar thread recently that advised not getting a set as most of them don't get used. Just get the one you need for the particular job.
15 October 2012 at 19:27 #100944
chris stephens
Participant
@chrisstephens63393
I suspect that Michael is asking which style of collet to get, not whether a full set is required.

Personally I would say to get an ER32 set of collets with the holder to fit your, about to be purchased, mill. In addition I would suggest getting a myford screw on collet holder, be it direct fit or flange and back plate , do not bother with a Morse one for the lathe as this prevents using long lengths to fit through the head stock.

Again, given the choice, I would pick a collet holder with a separate back plate for the lathe because a. it allows you to, at some time in the future, fit it to another back plate for a larger machine and b, it allows you more scope to get the thing running truly by means of "bump true" and judicious use of tin foil packing. If you were to buy a direct mount holder and it were to be a off, the only way to correct it would be to re-cut the taper, which would then not align to the thread which in turn holds the closing taper. Re-cutting the taper accurately is perfectly possible but it might be outside the scope of some of the less well equipped machinists.

It would be worth reading Harold Hall's words of wisdom, posted a few weeks ago, about collets not closing, but don't let that put you off.

chriStephens

PS if DC1 is reading this, why does the spell checker not recognise "collet", seems a bit odd for an engineering site.
15 October 2012 at 21:35 #100962
Terryd
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@terryd72465
Hi,

May I point you to this thread

Regards

T
16 October 2012 at 02:52 #100973
Donhe7
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@donhe7
Posted by chris stephens on 15/10/2012 19:27:31:

chriStephens

PS if DC1 is reading this, why does the spell checker not recognise "collet", seems a bit odd for an engineering site.

Not having looked myself, but do remember seeing a "dictionary" section (or function) in some "Spell Checkers", does this version have one?? —— this function allows the user to add a new word if it is not in the basic "'checker", when it is present

donhe7
16 October 2012 at 10:05 #100990
michael chalmers
Participant
@michaelchalmers19148
Chris

Thanks for the advise, will be most likely purchasing the myford screw on collet holder,

Thanks again
16 October 2012 at 10:42 #100998
NJH
Participant
@njh
Hi Michael

Yes I can recommend that one but, in case you have problems fitting it, see this thread.

I admit I was stumped for a while!

Regards

Norman
16 October 2012 at 11:19 #101001
JohnF
Participant
@johnf59703
Michael, possibly to late but have a look at this thread

**LINK**

Regards John
16 October 2012 at 21:10 #101030
Sub Mandrel
Participant
@submandrel
> There was a similar thread recently that advised not getting a set as most of them don't get used. Just get the one you need for the particular job.

Not so sure here! I have four ER25 collets plus another four home-made ones and continually regret not having a full set. The home made ones are OK for the size they are made but don't seem to collapse as well or as far as bought ones. They are made of medium carbon steel.

I think if you have all the sizes you are much more likely to use them instead of a chuck.

Neil
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