Search found 260 matches

by choprboy
Sun Oct 04, 2020 12:14 am
Forum: General Discussion
Topic: REMOVING rivetts from NAME PLATES
Replies: 9
Views: 609

Re: REMOVING rivetts from NAME PLATES

I guess I'm the odd man out...I always remove nameplate rivets by drilling a small hole down the center of the rivet (possibly center punching or grinding a flat before drilling) maybe a 1/16" or so. Then use a larger drill slightly smaller than the diameter of the rivet shank to weaken the head. At...
by choprboy
Wed Sep 16, 2020 10:59 pm
Forum: General Discussion
Topic: Blasting cast iron
Replies: 3
Views: 391

Re: Blasting cast iron

I have done some blasting of paint off various cast iron and cast steel (bits of transmissions and engines) and used aluminum oxide grit. It digs deep into the existing paint and produces a fine scuff pattern on the material that the new paint readily locks onto. But you want to protect gasket surfa...
by choprboy
Fri Jul 31, 2020 12:49 am
Forum: General Discussion
Topic: How to increase tightness between splined pieces?
Replies: 21
Views: 3059

Re: How to increase tightness between splined pieces?

Could You slit the plate and press it a little smaller? I had a similar thought, but slightly different manner. Could you heat shrink the bracket, either by quickly heating to high temp and cooling, or running several weld bead around the circumference of the bore on both side (possibly you could T...
by choprboy
Fri Jun 19, 2020 11:29 pm
Forum: Lathes
Topic: D1-3 lathe chuck
Replies: 14
Views: 4114

Re: D1-3 lathe chuck

If it is a D1-3, you can get a backing plate for a lot less than $500. You can pickup a nice Bison from KBC for about $250. Or pick up a cheap generic D1-3 plate from Shars for as little as $65 (depending on size/finish). See also: Grizzly, AllIndustrial ($40 ???), AjaxToolSupply.
by choprboy
Mon Jun 01, 2020 4:26 pm
Forum: Lathes
Topic: Does Anyone recognize this follower rest.
Replies: 9
Views: 2713

Re: Does Anyone recognize this follower rest.

The Logan (and apparently Southbend?) used a 4-digit part number on the older lathes. So, for instance, follower for an old 14" Logan was part# 6320, a steady rest was #6315, etc.(I think they became AC-xxx part numbers sometime very early or pre-1940). Unfortunately I just haven't been able to find...
by choprboy
Sun May 31, 2020 11:56 pm
Forum: Lathes
Topic: Does Anyone recognize this follower rest.
Replies: 9
Views: 2713

Re: Does Anyone recognize this follower rest.

I searched for a while but haven't yet found it. Based on the style (orientation of mounting lugs, sweeping frame) I think it is a Southbend or Logan, probably pre-1940. I found lots of very similar followers, but most (like above) have the dogs on the opposite of the frame. So far my google-foo has...
by choprboy
Tue May 26, 2020 10:47 pm
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: wanted manual with wiring diagram grizzly df 1237g
Replies: 2
Views: 1633

Re: wanted manual with wiring diagram grizzly df 1237g

My Google-Foo says post#17. No idea if it has wiring diagrams in it or not.
https://canadianhobbymetalworkers.com/t ... lace.1222/
by choprboy
Mon May 25, 2020 5:49 pm
Forum: General Discussion
Topic: trepanning, or how to bore a 4" hole on a lathe without boring a 4" hole
Replies: 11
Views: 2703

Re: trepanning, or how to bore a 4" hole on a lathe without boring a 4" hole

Wilks does lots of special alloys as well as standard steel. Trepanning is done for a whole array of different reasons, including: - special alloys that are not produced as cored product from the mill - sizes that are not readily available from the mill (particularly for one-offs, no mill is going t...
by choprboy
Sat Mar 28, 2020 8:38 pm
Forum: Milling Machines
Topic: Uneven cut
Replies: 8
Views: 3231

Re: Uneven cut

Are you climb milling or conventional milling? Also, are you maintaining a constant traverse speed or stopping/starting? Looks like climb milling with a stop/start and a bit of backlash in the X.
by choprboy
Sun Feb 16, 2020 1:57 am
Forum: General Discussion
Topic: Diacro Model 24 (24" x 16ga steel) finger brake - making fingers
Replies: 2
Views: 1472

Re: Diacro Model 24 (24" x 16ga steel) finger brake - making fingers

My HF grade 52"x16ga finger brake appears to just uses 3/4" thick (as I recall) fingers that appear to be a plain cold rolled steel (probably 1018 or similar). The fingers are not hardened.
by choprboy
Sun Feb 16, 2020 12:39 am
Forum: General Discussion
Topic: Parting tool used by Stefan Gottswinter
Replies: 15
Views: 3750

Re: Parting tool used by Stefan Gottswinter

It's similar to a Tool-Flo grooving/parting insert and Walter makes a Cut MX system, a triangular/quadangular insert that fits in an indexing slot toolholder. I wasn't familar with what Stefan's specific system was, I figured it was some small specialty German producer, but searching around a bit I ...
by choprboy
Sun Feb 02, 2020 6:20 pm
Forum: General Discussion
Topic: Center Drill Tip Broken Off In Hole
Replies: 34
Views: 6880

Re: Center Drill Tip Broken Off In Hole

Another thing you can try (if the hole still needs to be enlarged) is to use a small cutter-cutting endmill (or a stubby stout drill with pretty flat face) and drill 3 holes around the perimeter of the broken off carbide tip. Then you can usually use a small punch or screwdriver blade to loosen the ...