Search found 384 matches

by thomas harris
Wed Nov 21, 2007 8:52 pm
Forum: Lathes
Topic: S.B. Back Gear Repair??'s
Replies: 8
Views: 2655

there are almost always backgears for atlas lathes on ebay. Right now there is a backgear for a 6" and 10/12" lathe each. They are not free, but the price is always way lower than a new one from Clausing in IN. I had a missing tooth in my spindle gear and bought a used one on ebay. I just didn't thi...
by thomas harris
Mon Nov 19, 2007 5:55 am
Forum: General Discussion
Topic: Hardening Question
Replies: 20
Views: 2370

I have made bearing sleeves for my "toy" lathe out of 4140 chromoly. I use annealed and harden them to the max. These pieces are not under huge stess, and must be hard enough to not mushroom as they are tightened onto the banjo bracket. The 4140 turns fairly well and can be oil hardened easily. If y...
by thomas harris
Sun Nov 18, 2007 4:55 pm
Forum: Milling Machines
Topic: Rant; "I need a small bench type...." WHY?
Replies: 83
Views: 16553

If I had the money for a fully equipped shop, both space-wise and quality-wise, it would be much more fiscally responsible to send the money to Jose or Harold or any number of other members of this board and have them make the onesy-twosy little parts I make with my MicroMark lathe or Cummins MiniM...
by thomas harris
Sun Nov 18, 2007 8:27 am
Forum: Milling Machines
Topic: Rant; "I need a small bench type...." WHY?
Replies: 83
Views: 16553

So I"m now banned from posting questions on my 618 Craftsman? My "shop" is a small extension of my one-car garage. No way in *&&* could I fit a stand alone lathe in their without divorce proceedings. I have fun fiddling with my machine and yes it is severely limited. I also like the fact that it was...
by thomas harris
Mon Nov 12, 2007 12:00 pm
Forum: General Discussion
Topic: after-market parts
Replies: 3
Views: 711

after-market parts

If you make them and selll them,what are the legal considerations as far as this goes? Not really planning on doing such, but have made many copies while rebuilding my machine and was wondering what the deal is with this. I purchase many aftermarket items from the parts suppliers while at work. Just...
by thomas harris
Wed Nov 07, 2007 7:12 am
Forum: General Discussion
Topic: 3 phase wire size.
Replies: 8
Views: 1350

Re: 3 phase wire size.

The local electrical supplier has suggested that I use 10 gauge, 3 conductor with a ground. My concern about that is that such a cable uses a ground wire that is a smaller wire than the conductors. Code allows ground wires to be derated as they will never carry current in a properly operating circui...
by thomas harris
Sun Nov 04, 2007 10:02 pm
Forum: General Discussion
Topic: what's with brass
Replies: 13
Views: 2131

I read it. I posted the begining. Don't quite see why the blades are so terrible at cutting it, when the lathe ripped though it like butter. Also, speed didn't seem to matter, just cut faster with faster speeds. With steel my lathe is fussy on speed, with too fast generally causing chatter. I think ...
by thomas harris
Sun Nov 04, 2007 9:42 pm
Forum: General Discussion
Topic: what's with brass
Replies: 13
Views: 2131

what's with brass

Ok, I just cut some brass with a sawsall. Worked my arse off cutting one small piece. Very slow. Broken teeth. I tried different tpi with little succes. After this lengthy operation I obatained one nice approx. 1"x1"x4" chunk of stock. I chucked it in my four jaw. What the heck?! It turned very easi...
by thomas harris
Thu Nov 01, 2007 8:51 pm
Forum: General Discussion
Topic: toolpost grinder uses
Replies: 3
Views: 822

That was more my thoughts. I too didn't like the idea of taking even my old clunker lathe and getting any metal oxide abrasives on it's moving parts.
by thomas harris
Thu Nov 01, 2007 3:57 pm
Forum: General Discussion
Topic: toolpost grinder uses
Replies: 3
Views: 822

toolpost grinder uses

what are the uses in addition to truing chucks and centers? Can it actually turn hardened materials to lathe accuracy? I"m showing my inexperience here, and I really don't care.
by thomas harris
Mon Oct 29, 2007 9:46 pm
Forum: General Discussion
Topic: trimming length of brass bushing
Replies: 9
Views: 1202

It's done. Just used a tight fitting plastic sleeve and oh-so-carefully tightened the chuck onto both of them. Held fine for the lateral pressures needed to face a small sintered bearing. Thanks for the ideas. I'm sure for more demanding work the special mandrel would be the way to go. The fits on b...
by thomas harris
Sun Oct 28, 2007 3:30 pm
Forum: General Discussion
Topic: how much reduction in ID with pressed in brass bearings
Replies: 7
Views: 1316

how much reduction in ID with pressed in brass bearings

I finsished the project requiring the trimmed bushings. Everthing went well. All I did for holding the bushing is to fit a piece of plastic outside the bushing, lightly chuck it, then face it to the proper length. One thing that I did encounter was after pressing the bearing into the casting, the fi...