Does anyone sell soft R8 blanks?

[Jason_Campbell]

I got the fantastic idea at work tonight to try to determine if there would be enough material on a R8 endmill holder to tweak it/ re-machine it to fit GTM (Gorton proprietary taper). From doing enough math to make my head hurt, it certainly appears it can be done, but I would like to find something with a unhardened R8 shank to practice on before I get into the whole grinding thing. I have been searching the last few hours for "soft R8", "unhardened R8", "machinable R8", and "unfinished R8" and I am striking out. I don't care what it is as long as it has an unhardened R8 shank. Have any of you got any leads? These have got to be available soft as blanks from somewhere. TIA.

Thanks,
Jason

 

[Jason_Campbell]

I got the fantastic idea at work tonight to try to determine if there would be enough material on a R8 endmill holder to tweak it/ re-machine it to fit GTM (Gorton proprietary taper). From doing enough math to make my head hurt, it certainly appears it can be done, but I would like to find something with a unhardened R8 shank to practice on before I get into the whole grinding thing. I have been searching the last few hours for "soft R8", "unhardened R8", "machinable R8", and "unfinished R8" and I am striking out. I don't care what it is as long as it has an unhardened R8 shank. Have any of you got any leads? These have got to be available soft as blanks from somewhere. TIA.

Thanks,
Jason

 

[Jason_Campbell]

I got the fantastic idea at work tonight to try to determine if there would be enough material on a R8 endmill holder to tweak it/ re-machine it to fit GTM (Gorton proprietary taper). From doing enough math to make my head hurt, it certainly appears it can be done, but I would like to find something with a unhardened R8 shank to practice on before I get into the whole grinding thing. I have been searching the last few hours for "soft R8", "unhardened R8", "machinable R8", and "unfinished R8" and I am striking out. I don't care what it is as long as it has an unhardened R8 shank. Have any of you got any leads? These have got to be available soft as blanks from somewhere. TIA.

Thanks,
Jason

 

[TedinNorfolk]

Jus' turn them up yoursel, you can clock up a commercial one to pick up the taper. Buy,beg,steal or borrow a 7/16 UNF tap for the drawbar thread.

 

[TedinNorfolk]

Jus' turn them up yoursel, you can clock up a commercial one to pick up the taper. Buy,beg,steal or borrow a 7/16 UNF tap for the drawbar thread.

 

[TedinNorfolk]

Jus' turn them up yoursel, you can clock up a commercial one to pick up the taper. Buy,beg,steal or borrow a 7/16 UNF tap for the drawbar thread.

 

[pm]

pretty sure I have seen these in msc...

 

[pm]

pretty sure I have seen these in msc...

 

[pm]

pretty sure I have seen these in msc...

 

[andrewmawson]

R8 Blanks are available, certainly here in the UK

 

[andrewmawson]

R8 Blanks are available, certainly here in the UK

 

[andrewmawson]

R8 Blanks are available, certainly here in the UK

 

[Engine Room Artificer]

Can get emergency R8 collets from a variety of suppliers such as J&L or Chronos in either steel or brass.

Usual disclaimer etc etc. Hope it works for you

Al

Edit: can't get the link to work, try 'emergency R8 collet' as a search as opposed to 'unmachined'.

 

[Engine Room Artificer]

Can get emergency R8 collets from a variety of suppliers such as J&L or Chronos in either steel or brass.

Usual disclaimer etc etc. Hope it works for you

Al

Edit: can't get the link to work, try 'emergency R8 collet' as a search as opposed to 'unmachined'.

 

[Engine Room Artificer]

Can get emergency R8 collets from a variety of suppliers such as J&L or Chronos in either steel or brass.

Usual disclaimer etc etc. Hope it works for you

Al

Edit: can't get the link to work, try 'emergency R8 collet' as a search as opposed to 'unmachined'.

 

[gwilson]

Don't make them out of brass.I guarantee you that the cutters will suck out of the collets no matter how tight you get them.

 

[gwilson]

Don't make them out of brass.I guarantee you that the cutters will suck out of the collets no matter how tight you get them.

 

[gwilson]

Don't make them out of brass.I guarantee you that the cutters will suck out of the collets no matter how tight you get them.

 

[precision tools]

He is looking for a solid end mill holder, not a collet. I doubt they are available as such.

While I won't rule them out, I cannot remember seeing emergency R8 collets. The need is minimal as they are used for toolholding, not workholding as a 5C collet is.

 

[precision tools]

He is looking for a solid end mill holder, not a collet. I doubt they are available as such.

While I won't rule them out, I cannot remember seeing emergency R8 collets. The need is minimal as they are used for toolholding, not workholding as a 5C collet is.