Search found 1522 matches

by Russ Hanscom
Thu Mar 12, 2020 4:46 pm
Forum: General Discussion
Topic: solid rivets
Replies: 33
Views: 2107

Re: solid rivets

Might work with a press. I was doing 1 1/4" dia rivets with a 40 ton press, but I was heating them. 6mm might work at 20 tons cold; certainly sounds close to a success. I have done 1/2" rivets cold with a rounded head and 40 tons. The other problem I was having was to get the flat head to fully form...
by Russ Hanscom
Wed Mar 04, 2020 12:33 pm
Forum: General Discussion
Topic: Potting electrical coil in steel
Replies: 21
Views: 1308

Re: Potting electrical coil in steel

Might also check with a local electric motor shop about doing the potting, ones that rewind motors should have the epoxy and vacuum setup ready to do.
by Russ Hanscom
Tue Mar 03, 2020 2:35 pm
Forum: General Discussion
Topic: Using burrs
Replies: 9
Views: 924

Re: Using burrs

They clog really easily, so spray liberally with WD-40 or similar.
by Russ Hanscom
Fri Feb 28, 2020 6:07 pm
Forum: General Discussion
Topic: Getting A Large Plastic Nut Undone
Replies: 5
Views: 861

Re: Getting A Large Plastic Nut Undone

I like channel lock pliers, or water pump piers, or a chain strap wrench - all will work, but will scar the nuts a bit.. Looks like you have already tried the "right" tools.
by Russ Hanscom
Fri Feb 21, 2020 9:15 pm
Forum: General Discussion
Topic: Tapping Heads Tapmatic A5 and ?
Replies: 19
Views: 1683

Re: Tapping Heads Tapmatic A5 and ?

Never had a problem with a tap slipping but half a dozen holes is a typical run for me. If I rarely changed sizes and was doing production, then a square hole, etc., might make sense.
by Russ Hanscom
Fri Feb 21, 2020 4:36 pm
Forum: General Discussion
Topic: Tapping Heads Tapmatic A5 and ?
Replies: 19
Views: 1683

Re: Tapping Heads Tapmatic A5 and ?

Not sure I follow. I have a Tapmatic head, and with the two Jacobs type collets, it covers all taps up to 1/4". The collets grip the tap shank, no square adapters needed. I have a similar Ridgid tapping head that covers from 1/4" to 1/2", and again it has two Jacobs type collets and the taps are hel...
by Russ Hanscom
Tue Feb 18, 2020 6:44 pm
Forum: General Discussion
Topic: hardening and tempering
Replies: 20
Views: 2291

Re: hardening and tempering

Got a chart for a 1040 steel, closest that I could find. 5 mb pdf file. email address?
by Russ Hanscom
Tue Feb 18, 2020 6:35 pm
Forum: General Discussion
Topic: hardening and tempering
Replies: 20
Views: 2291

Re: hardening and tempering

For most alloys, there are charts of hardness vs tempering temp. There is also a rough chart of hardness vs strength. You should be able to find tables or charts on line. I will try to find a sample cahrt,
by Russ Hanscom
Tue Feb 18, 2020 4:34 pm
Forum: General Discussion
Topic: hardening and tempering
Replies: 20
Views: 2291

Re: hardening and tempering

From what little I have done, your tempering temperature seems to be on the high side. But it all depends on the strength/ductility combination you want.
by Russ Hanscom
Sat Feb 15, 2020 6:42 pm
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: 5mm parting blades
Replies: 1
Views: 762

Re: 5mm parting blades

Too bad they are not half that width.
by Russ Hanscom
Sat Feb 15, 2020 9:28 am
Forum: General Discussion
Topic: trimming a groove-tool holder
Replies: 6
Views: 1183

Re: trimming a groove-tool holder

I have also cut down a few shanks without incident. As an option , I have made a few custom tool holder blocks that take a larger shank.
by Russ Hanscom
Fri Feb 14, 2020 11:18 am
Forum: General Discussion
Topic: How would you make this?
Replies: 11
Views: 1300

Re: How would you make this?

Not too hard to do, just finished a few for a brake cable on a 4x4. I would post a picture, but would have to crawl under the vehicle to see it! Drill center hole, cut hole for the ball on the cable from the side with a ball end mill, slot for shank with a small end mill. This one used a small cross...