Search found 965 matches

by GeorgeGaskill
Wed Jan 22, 2003 7:19 pm
Forum: Casting & Foundry Work
Topic: Calling Harold V - 50Kw induction furnace
Replies: 46
Views: 17347

That image is too dark to see the gun. And ...

in any event, that gun is not impressive as it was a field expedient marriage of the barrel to a mount designed for another barrel. I'll take a picture of its sister and post that. By the way, we can move this thread over to the Gunsmithing/Shooting forum if it has drifted to far away from Casting &...
by GeorgeGaskill
Wed Jan 22, 2003 6:51 pm
Forum: Gunsmithing
Topic: advive on purchase and value appreciated
Replies: 7
Views: 3485

We had a 3-in-1 discussion in the General forum...

just a few days ago; see http://www.chaski.com/ubb/showthreaded.php?Cat=&Board=gendiscussion&Number=3417&page=0&view=expanded&sb=5&o=31&fpart= for the thread. There are other websites that discuss the small import lathes and mills at yahoo-groups. You can also check out Varmint Al's pages http://var...
by GeorgeGaskill
Wed Jan 22, 2003 2:35 pm
Forum: Lathes
Topic: Lathe Chuck Jaw Regrinding
Replies: 14
Views: 4371

Something else to consider is ...

that grinding the jaws at that opening will leave a pretty small radius on them that will cause them to grip larger material at the edges and tend to make deeper impressions in the stock. Might be better to grind with a surface grinder for a flat end which would require taking care to get the end su...
by GeorgeGaskill
Wed Jan 22, 2003 2:04 pm
Forum: Casting & Foundry Work
Topic: Calling Harold V - 50Kw induction furnace
Replies: 46
Views: 17347

My home monitor brightness must be set real high..

as this image shows a lot darker here than there. I'll do some adjustments on the image and repost. It really wasn't completely dark when that shot was fired.

It's interesting, however, to note all the sparks, etc., that are not visible during a daylight firing.
by GeorgeGaskill
Wed Jan 22, 2003 1:26 am
Forum: Casting & Foundry Work
Topic: Calling Harold V - 50Kw induction furnace
Replies: 46
Views: 17347

NightFire!!

Image


This is one of our larger bore mortars.
by GeorgeGaskill
Tue Jan 21, 2003 8:34 pm
Forum: Gunsmithing
Topic: Sight installation / adjustment tool
Replies: 6
Views: 2961

The more expensive one looks even simpler ...

(attachment only)
by GeorgeGaskill
Tue Jan 21, 2003 8:29 pm
Forum: Gunsmithing
Topic: Sight installation / adjustment tool
Replies: 6
Views: 2961

That kind of money for those things almost ...

has me ready to quit my day job, assuming of course there is a big market for them. :-) Can't see anything really too hard about making one for yourself in either one, although the picture at brownells.com of the PI leaves something to be desired. Saving the image and bringing the brightness up reve...
by GeorgeGaskill
Tue Jan 21, 2003 1:56 pm
Forum: General Discussion
Topic: Are sparks from carbide good?
Replies: 8
Views: 2528

Blue chips are the target; sparks are too fast.

Cutting speeds with carbide are related to minimizing expense. Most of the time carbide will work just fine at slower speeds but the tool wear versus work done will be higher. In a home shop, that probably doesn't matter much.
by GeorgeGaskill
Tue Jan 21, 2003 2:27 am
Forum: General Discussion
Topic: New to this! Very very new!
Replies: 21
Views: 5672

While this post should probably be in ...

the Machine Tools & Tooling forum, I'll answer here anyway. 3-in-1 machines are generally frowned on by most of this board's posters because of their limited abilities; and the ones of Harbor Freight quality are further handicapped by their low quality. The EMCO machines are generally well thought o...
by GeorgeGaskill
Mon Jan 20, 2003 5:58 pm
Forum: General Discussion
Topic: Digital Calipers?
Replies: 18
Views: 5613

I've heard that the Chinese-made Mitutoyos ...

are not yet up to the Japanese-made standards. Reportedly the current tolerance is .0003" which is an order of magnitude too much for a tenths reading device. Another recent report was of a 6" caliper in which the depth measuring stick was .025" short of reaching the end of the bar; I suppose you co...
by GeorgeGaskill
Mon Jan 20, 2003 3:55 pm
Forum: Casting & Foundry Work
Topic: Calling Harold V - 50Kw induction furnace
Replies: 46
Views: 17347

The "belly band" left between the trunnions ...

after lathe turning the taper was removed (in the above mentioned fixture) by shimming the fixture such that the upper line of the barrel was horizontal and then milling off the excess metal. In the pictures, that area looks faceted from the numerous narrow flat strips; still needs to be attacked wi...