MetalworkingFun Forum

Looks good Ed!!

Very nice Ed.

(01-14-2017, 05:00 PM)1EdK Wrote: [ -> ]

(01-14-2017, 04:32 PM)TomG Wrote: [ -> ]...

I can't tell from the pic, but be sure the knurls are slightly chamfered before trying it out. Otherwise, they may dig into the work.

Tom

Now that I think of it, those knurls are not chamfered and are actually meant for my cut knurling tool project I may tackle some day. I might have grabbed the wrong knurls
Anyway, what TPI knurls do you use the most? The ones I've got on the tool are pretty fine so, since I'm doing a McMaster order, I think I'll get some properly chamfered knurls.

Ed

EDIT: those knurls were not meant for my cut knurling tool project. I got them from McMaster for this project. Now I'm wondering about a source for the beveled edge knurls. They seem to be as scarce as hen's teeth.

I got my knurls from Accu-Trak https://www.accu-trak.com

Great people to deal with. 

Very nice Ed.

So I'm assuming I need 45° left and right type knurls with beveled edges, correct?
I may try rigging up some way of beveling the edges on the knurls I have using a Dremel tool with a grinding stone.

Ed

Make a fitting so that you can use your dremel as a toolpost grinder. Lots of pics out there of people who have done this. Then turn up an arbour to suit.

(01-15-2017, 09:59 AM)EdK Wrote: [ -> ]So I'm assuming I need 45° left and right type knurls with beveled edges, correct?
I may try rigging up some way of beveling the edges on the knurls I have using a Dremel tool with a grinding stone.

Ed

Yes you'll need a right and left knurls for diamond knurling, but 30º knurls are more common than 45º. They produce the typical diamond shape knurl pattern. The pitch I use most is 20tpi, but I also have 25 tpi for a bit coarser pattern. I also have some 35tpi straight knurls which I use a lot.

The last time I chamfered the edges, I just mounted them on a bolt and chucked it up in the cordless drill. All it took was a light touch on the belt sander to do the job.

Tom

Thanks for the info Tom. I'll try beveling them like you did.

I've got a set of 30° 30TPI and 40TPI  knurls for this tool. I got them from McMaster and they're Accu-Trak brand. They don't carry the beveled knurls though. I think I'll pick up a set of 30° 20TPI knurls also.

Ed

EDIT: I have 30° knurls, not 45°.

(01-14-2017, 05:07 PM)wawoodman Wrote: [ -> ]Darn you, Ed, now I have to finish mine.

A couple of tips I learned while assembling/disassembling the tool.

Mark the .250 -.001 diameter hole for the dowel pins somehow. I just scribed a line across the hole to mark it so I know which way to knock out the pin when necessary.

Measure your dowel pin lengths. Mine are long by about 10 thou on average so they stick out of the knurl holder and prevent it from sliding all the way into the body. I just knocked mine out to grind the ends down to slightly less than the width of the knurl holders.

Ed

hi ED a job well dune