View Full Version : tool bit for cold roll

03-30-2013, 11:14 PM
I was looking for a thread on a tool bit that leaves a smooth finish on cold rolled.

If I remember correctly the HSS bit had two or three ? flat grinds.
The end was basically 90 with bottom clearance, and a 7 double sloping grind on the top side.
The bit was angled slightly to the work and the bit could cut anywhere along its 90 face.

Does this ring a bell for anyone? Or can anyone give me a hint where to search?



03-31-2013, 12:02 AM
"shear" something should help, with "tool" or "bit"...there are several threads plus parts on several other websites (most recently within the last 6 months or so but going back at least a couple of years)

Sun God
03-31-2013, 01:13 AM
Google 'vertical shear tool' for my preferred alternative to the tool you're thinking of, whose name escapes me.

03-31-2013, 01:26 AM
My finish on cold rolled seems to be fine. I just want to know how to get chips rather than strings. I think I spend more time clearing swarf than I do cutting.

03-31-2013, 10:04 AM
Are you thinking about the "tangential tool cutter/holder"?

03-31-2013, 10:43 AM
No John

I have oneof those and it works ok.
I think Russ and sungod put me on the right track with "shear tool" but I haven't had time to do the search.
The grandkids and the Easter Bunny are comming for dinner.:)


03-31-2013, 12:08 PM
Thanks for the help.

I found the thread " "finishing a HSS tool".

I'll have to grind one up and give it a try.


03-31-2013, 12:18 PM
What your looking for is the Shear Cutting tool as shown here.


There are a few threads about it if you do a search for Shear Cutter tool. It does a great job of putting a finish near to a ground finish. It's a finish cut at .002" off the diameter at about 150 rpm with .002" feed until you get the diameter you desire.

Basically it's a left hand cutter turned upside down but with a different side angle of about 40 deg.

03-31-2013, 12:29 PM
Thanks for sharing and posting a picture.