Soft jaws

[old martParticipant @oldmart]

That is a good design to use with standard jaws, Dave. I suggest you drill and tap at least 2 more locking holes, up to 6 if you want, so the jaws can be rotated when the first position gets used up.

[egaParticipant @ega]

DC31k:

Thank you for your detailed comments and the links.

[Danni BurnsParticipant @danniburns84841]

Just posting so I can find the article again later. some fantastic ideas on here.

[old martParticipant @oldmart]

Lots of good ideas for add on jaws in this thread. Thame Workholding make chuck jaws, here is a link to their chuck jaw catalogue:

 

https://thameworkholding.com/wp-content/uploads/2024/07/Thame-Workholding-Catalogue-2-page-view.pdf

[mike robinson 2]

On mike robinson 2 Said:

here you go

I remember this, but using hex stock, appearing in MEW somewhere in the past. Probably before my time.

Neil

[Danni BurnsParticipant @danniburns84841]

Coincidence I guess – someone sent me this link yesterday: http://www.homews.co.uk/page100.html

regards

[old martParticipant @oldmart]

People intending to make borable jaw accessories for more accurate and secure workholding should also address the need to pretension the jaws as they are being bored. Rings should be made with pegs to fit in holes in the jaw parts to take out the backlash from the jaws, Which are set to allow the minimum of boring first. The rings for boring jaws that are to be used outside the job should be at the front of thejaws to remove any potential bellmouthing not a plug inside if possible.

[Blue HeelerParticipant @blueheeler]

Some very clever ideas gents, thank you.

[DalboyParticipant @dalboy]

How about some of these

 

https://youtu.be/r34WUDab244?si=Lv9atrn5WlSuIAoz

[Danni BurnsParticipant @danniburns84841]

Jeez

That’s almost porn for some of the old guys on here

[JasonBModerator @jasonb]

However he seems to have a different interpretation of “soft jaws” use. He is using them simply as a softer surface to protect his work when most refer to soft jaws as ones that are not hardened and can therefore be machined in situ for both ensuring the work is concentric and if thin then without wobble.

But I suppose if he has put that much work into his protective jaws he would be reluctant to start chopping them up.

If you held a few narrow parts in those the soft copper would soon start to deform and you would end up with ridges and the chance of bellmouthing but Ok for holding full length assuming they ran true.

[Harry WilkesParticipant @harrywilkes58467]

I cut up drink cans then into strips very hand when you need to protect your work

H

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