Parting On a Hobby Lathe

I have a 14 1/2" South Bend lathe, paring off with a normal parting tool in the front is an exercise in futility. An upside down parting tool on the front side makes it painless, I even have a screwed on chuck and am being careful.

Not a problem if using tipped tools

1 . The tip itself tapers back from the cutting edge

2. The holder is quite a bit narrower than the tip

Also I would say at least 80% of hobby lathes don't have a coolant system

J

Edited By JasonB on 08/01/2015 16:34:05

I use one of these to get suds into the cut for parting steel. At £0.99 including postage anyone can get a coolant system!

Russell.

Lid off a spray can free, pack of 10 brushed for a quid off the poundland tool sellers works for me.

But thats not flood coolant.

Thanks everyone for the input on this. I tried to get the inverted parting tool holder from eccentric engineering, but unfortunately they didn’t have any in stock so yesterday I made my own. What a result! It was magic and I parted off a 1.5 inch aluminium bar without issue.

David

Home made parting tool holder :-

Any more pics David, perhaps with the blade in it please?

Vic (and everyone else)

My original parting tool came from RDG tools and had a 4 x ½ x 3/32 blade

When the blade is upside down then the cutting edge is at the wrong height. The home made parting tool is similar, but with the section that clamps in the lathe at a different height to correct for this (see below)

I used a tilting table for the ~25 deg angle at the top, and a 3/32 slitting saw for the groove the blade sits in at the bottom.

David

Edited By David Cambridge on 26/01/2015 18:32:47

Edited By David Cambridge on 26/01/2015 18:33:35

Edited By David Cambridge on 26/01/2015 18:34:19

Edited By David Cambridge on 26/01/2015 18:42:09

Thanks for that David, very helpful. I actually started making mine a couple of weeks ago but have had other things to do. Mine has to have the main body in two parts due to lack of stock material! I'll post a pic when it's done.