Ooh Look!

[VicParticipant @vic]

Square collets!

**LINK**

Wish I could afford them!

[VicParticipant @vic]

[Tractor manParticipant @tractorman]

I deal with cutwell and they offer great service. They are a little expensive if you need a few sizes.

[JasonBModerator @jasonb]

They are not square collets so won't hold square work. They are round collets that grip the round shank of a tap and have a short square at the end to stop the tap rotating in the collet, hence the name "square drive"

Edited By JasonB on 28/03/2018 18:31:11

[Frances IoMParticipant @francesiom58905]

you only get to see the price if you allow Google to track you – possibly those known to have more expensive tastes have what is known in the trade as the Apple tax by the now well known trick of charging Apple users more (based on their browser profile)

[VicParticipant @vic]

Posted by JasonB on 28/03/2018 18:30:26:

They are not square collets so won't hold square work. They are round collets that grip the round shank of a tap and have a short square at the end to stop the tap rotating in the collet, hence the name "square drive"

Edited By JasonB on 28/03/2018 18:31:11

Shame.

[OldironParticipant @oldiron]

Here is a more affordable ER32 tapping collett on Ebay

**LINK**~

3mm to 16mm sizes available

BUT you pays your money and takes your choice.

[Mick B1Participant @mickb1]

Unless you've got a separate slippable clutch somewhere, I'm not sure the OP's version are an advantage.

Edited By Mick B1 on 28/03/2018 19:35:32

[Neil WyattModerator @neilwyatt]

I have square ER25 collets

They are not heavy duty, though…

[Mark RandParticipant @markrand96270]

The 'rigid' term in 'rigid tapping' indicates that clutches are not part of the equipment .

[Chris Evans 6Participant @chrisevans6]

I have a number of 5C square collets as well as hexagon collets. Great in the lathe for making nuts n bolts. Prices are reasonable to.

[not done it yetParticipant @notdoneityet]

Posted by Neil Wyatt on 28/03/2018 21:17:05:

I have square ER25 collets

They are not heavy duty, though…

3-D printed, presumably?

[Neil WyattModerator @neilwyatt]

Posted by not done it yet on 29/03/2018 17:48:45:

Posted by Neil Wyatt on 28/03/2018 21:17:05:

I have square ER25 collets

They are not heavy duty, though…

3-D printed, presumably?

yep. Proof of concept, really. The idea you can print a collet to hold anything you can model in 3D

[Howard LewisParticipant @howardlewis46836]

If you want steel collets to hold square material, it's beginning to sound the usual, one job begetting a load of others.

1) I want a square collet, so make an ER collet in steel with a bore just smaller than the square.

2) Make up a rotary broaching tool

3) Rotary broach the collet so that the bore then becomes square, (or what ever shape is needed).

Of course, 2 is going to spawn some other jobs, no doubt . Shades of "Dear Liza, there's a hole in my bucket"

At least you should end up with a load of rotary broaches of various shapes and sizes! Which will need storage making and a place found for it. See what Ii mean?

Howard

[Author]

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