Search found 129 matches

by J. Randall
Fri Oct 03, 2008 2:06 am
Forum: Gunsmithing
Topic: Holding a Barrel In a Lathe
Replies: 20
Views: 21460

Csabn, although not very high tech, you can build up a collar around the barrel a few inches from the muzzle with 1 inch masking tape that will just slip down through the spindle bore. I have seen many accurate chambers cut this way.
James
by J. Randall
Fri Oct 03, 2008 1:49 am
Forum: General Discussion
Topic: attaching small hardened tips securely without annealing
Replies: 16
Views: 4323

Baddog, I made some like you described yrs. ago to do a head r&r on a Datsun. Used good quality allens and used regular braze holding most of the heat on the socket. Broke the torque and retorqued the head twice because the machine shop missed a warped valve. Never twisted a one of them. I think...
by J. Randall
Sat Sep 27, 2008 12:41 am
Forum: General Discussion
Topic: Boring Bar Grind
Replies: 41
Views: 7722

Seal, start where your top black line intersects the corner and go right down that short edge to the bottom with your radius, leave that other area alone.
James
Doh, posted my answer and went back to look and it took me to page 2, and I see you already got your answer.
by J. Randall
Thu Sep 18, 2008 1:20 am
Forum: General Discussion
Topic: Do you guys ever drive your friends crazy??
Replies: 35
Views: 8326

If you are working with sheet metal where everyone else uses a tape measure and feet, inches and fractions are accurate enough, then I don't blame them a bit. Sounds like you are just making it confusing. Just because it comes easy to you doesn't mean it does to them.
James
by J. Randall
Wed Sep 10, 2008 12:29 am
Forum: Lathes
Topic: Toolposts
Replies: 19
Views: 8471

Carl, if exactly on 30 degrees works best for you that is great. The reason 29 or 29 1/2 is often recommended is so you don't go over 30 if your scale is not super accurate. Sometimes you can even drop back to 20 if you are getting chatter threading with carbide on some hard steel and it will help. ...
by J. Randall
Wed Apr 02, 2008 2:10 am
Forum: General Discussion
Topic: Drilling Hardened Steel
Replies: 8
Views: 4961

Go to the hardware store and get a half inch masonry bit. Touch it up on a greeen wheel to get it a little sharper. Slow speed and quite a bit of pressure, maybe some dark thread cutting oil. James Edit, just noticed you had tried carbide, My next choice would be the idea of annealing the hole, unle...
by J. Randall
Thu Jan 31, 2008 1:52 am
Forum: General Discussion
Topic: New problems found on Jet
Replies: 6
Views: 2815

Dave, if your tailstock is just .003 high, I would leave it alone. Any normal wear is going to lower it, and it will be more accurate. A lot of the best American made lathes were scraped in a couple of thou. hight to start with to allow for a little wear.
James
by J. Randall
Wed Dec 12, 2007 3:54 am
Forum: General Discussion
Topic: I've been making some changes......
Replies: 46
Views: 16322

The mental picture I have of Harold after reading his posts for several yrs is Tall fairly large frame, not carrying any extra weight. Hair probably iron gray, worn long, pulled back in a ponytail, no facial hair . Probably way off, but just had to throw it out there. Thats what he looks like to me....
by J. Randall
Fri Dec 07, 2007 12:55 am
Forum: General Discussion
Topic: Practical Machinist Forum: Is it up?
Replies: 3
Views: 2429

Woof, its up. They changed to a new forum software. Some complained that old bookmarks did not work, although mine worked ok. You might try typing the address into the address bar.
James