Thread On Osborne Self Centering Punch

[Tree Reaper]

I'm trying to find out what the thread is on this tool so I can make a handle for it.

The handle that comes with it has the self centering pin pressed into it and I can't use it to sharpen the cutting punches on my wheel.

I contacted Osborne and they are treating it like a trade secret.

It appears to be a bastard thread so they may be using their own thread.

If I can't find out here I'll take it to a machine shop.

Thanks.

Kevin.

[TomG]

A machine shop will have thread gauges to tell you if it's a SAE, NF or Metric thread.

It may not be so much a secret as no one really knows <g>...

Tom

[Tree Reaper]

I have SAE and Metric thread gauges Tom and I can match the thread but the diameter of the thread doesn't match the standard threads.

I checked pipe threads and couldn't find a match also but I know you can make any thread you want on a lathe and I'm pretty sure that's what they've done.

When I find out everyone will know.

They would have been better off just telling me instead of making it a Big deal.

[J Hayes]

I think Travers tool sells non standard taps and dies. You could possibly even use on of the tips to tap brass, cut a few flutes in it and bingo.

I just got one of their K157 (I think) mini punch set, each tip appears to have a different minor thread diameter and half of the set won't thread in fully. Hopefully your set is more consistent. Oh and half the set has a blunt end in need of much sharpening, sadly.

Edited December 12, 2013 by J Hayes

[Tree Reaper]

All I was looking for was a piece of threaded rod or pipe to thread on the cutters in order to keep my fingers safely away from the buffing wheel when sharpening.

They must think I want to sell the information to China.

Osborne is now at the very bottom of my tool supply list.

I'll buy from Japan before buying another Osborne tool.

I know the machine shop I work with can duplicate the thread on a piece of brass or aluminum rod in a matter of minutes.

So long Osborne!

[J Hayes]

They maybe are still using threads from before the standardization too. If they were smart they'd sell a sharpening "stump".

I got some strap end punches and a bag punch from Beiler's their "house" brand and I gotta say those are awesome! All were very useable right outta the box, nearly a mirror finish on them all, unlike the poor blunt edge on the Osborne bag punches I got awhile back. Yeah im trying to avoid new Osborne stuff too.

[Tree Reaper]

If they were smart they'd sell a sharpening "stump".

My thoughts EXACTLY.

I got some strap end punches and a bag punch from Beiler's

Thanks for that tip J.

[J Hayes]

enjoy

[Tree Reaper]

Very nice.

I couldn't find a web site for them but I can call for their catalog.

I just dropped my punch off with the shop and I may get it back as soon as tomorrow.

[J Hayes]

They have a nice selection of stuff, good buckle assortment.

I'm interested to hear about your punch, maybe you can sell a few stumps....

[Tree Reaper]

For sure, I'll keep you posted on the results.

It's amazing how something so simple can become so complicated.

I know it's a copy right issue for them but I'm not asking about the process they use to make the tool, they didn't invent the thread and because it's a bastard thread you can't find it at the hardware store so it seems like a case of paranoia.

[Tree Reaper]

Well I just got back from the shop and they did a perfect job of turning out a tool I can use to sharpen these Osborne cutters safely.

[TomG]

OK. So spill the beans.... Did they have any idea of the thread size?

[Tree Reaper]

The beans are, it is a standard 14tpi on a diameter .600" which makes it a bastard size and not common.

A standard 14 tpi is usually found on 7/16 hardware.

Edited December 13, 2013 by Tree Reaper