Help needed

[Calvin Robinson]

I need a new 0-80 counter bore, I got the last one at MSC but they have discontinued them. Can any one tell me where to buy one?
Thanks,
Calvin

 

[Craig]

McMaster-Carr has some listed for fillister head screws starting at #0 http://www.mcmaster.com/#counterbores/=c0lhxm

Don Robinson made the counterbores I have. You could try him also.

Craig

 

[Calvin Robinson]

McMaster-Carr has some listed for fillister head screws starting at #0 http://www.mcmaster.com/#counterbores/=c0lhxm

Don Robinson made the counterbores I have. You could try him also.

Craig

Thank you so very much Craig!

 

[Frank Niro]

Please tell me why you would need a 0 X 80 counterbore? Frank

 

[Calvin Robinson]

Please tell me why you would need a 0 X 80 counterbore? Frank

To counterbore for the screws that hold my scales on my folding knives. I also counterbore for the screws that hold my spacer in place, I counterbore my liners and screw into my spacer. I also counterbore my pivot pin screws. I am making a knife with blacklip pearl and want a new sharp counterbore to counterbore the pearl for the screws that hold it in place, I'm afraid my well used counterbore might chip the pearl.
I am using all 0-80 screws in this knife and in the last one I built out of bronze and mammoth ivory.

 

[Ground to the bone]

Is this what you need? http://www.texasknife.com/vcom/product_info.php?cPath=52_890_565&products_id=2056

 

[Calvin Robinson]

Is this what you need? http://www.texasknife.com/vcom/product_info.php?cPath=52_890_565&products_id=2056

Thats kinda sorta what I need but I don't want to drill and countersink in one operation. I checked their catalog but did not see that in there.
Thank you for the information though. I have already orderd some from Macmaster Carr.

 

[Frank Niro]

Hi Calvin.
That's a new proceedure for me. I never have done that. The counter bore will not center any thing better and reasonable quality taps with go through real easy. Calvin, I think you know I do a lot of my folders with 0 X 80 screws and have found the taping without any reaming first works fine. I don't ream the holes for 1 X 72 or 2 X 56 screws either. Frank

 

[Fellhoelter]

He wasn't looking for reamers Frank, but counterbores.

He wants to set the heads below the surface of the material...

What do you do, if not counterbore or countersink?

I know some guys just use a drill of the same diameter as the head....

I never liked that method, but it works in a pinch.

 

[Frank Niro]

I appologize !!! I just bought the 0X80 and 2X56 And am using them now. they are the correct size for three head sizes in each from a Eugene Iverson who was in the Blade forums. He makes them out of drill bits. Frank

 

[Brett Mathews]

well I looked all over for these and ended up having them made out of a carbide reamer by a shop localy that had a od grinded. They cost me $35.00 each

 

[Calvin Robinson]

well I looked all over for these and ended up having them made out of a carbide reamer by a shop localy that had a od grinded. They cost me $35.00 each

Well I ust received the ones I orderd from Mcmaster Carr, I orderd 6 and they only shipped 5 so I must have bought all they had and they were only $9.00 and change.