Search found 17956 matches

by Harold_V
Tue Oct 20, 2020 1:43 am
Forum: 3-in-1 Metalworking Machines
Topic: Need help identifying feed screw threads on Smithy AT-300
Replies: 2
Views: 13

Re: Need help identifying feed screw threads on Smithy AT-300

The thread appears to be an Acme form. It isn't 30°, but 14½° (29° included angle), assuming it is. The pitch of the thread should match the dial on the cross slide. In other words, it a full turn of the dial takes off .200" on the diameter, the pitch is 10. Using a ruler, measure across several thr...
by Harold_V
Mon Oct 19, 2020 1:46 am
Forum: General Discussion
Topic: 5x6 Bandsaw Blades
Replies: 8
Views: 153

Re: 5x6 Bandsaw Blades

Hence a suggestion fotmr a fine pitch blade rather than coarse pitch. Depends. If one has need to saw material with a considerable amount of the blade in the cut, fine pitch blades tend to be worthless. It's a good idea to have a blade coarse enough so each tooth produces a full chip and has adequa...
by Harold_V
Sat Oct 17, 2020 3:36 pm
Forum: Milling Machines
Topic: opinion; old German milling machine
Replies: 17
Views: 527

Re: opinion; old German milling machine

One rarely purchases a machine for a specific task. Machine tools are owned to provide freedom for the owner, to allow their use for unknown future projects. They also fulfill needs those of us have in the way of building one's small empire. One can not own too many machines. I have several machines...
by Harold_V
Sat Oct 17, 2020 3:50 am
Forum: General Discussion
Topic: Bearing issue?
Replies: 19
Views: 319

Re: Bearing issue?

I'm late to the party, but if you've been machining mild steel dry, no lube at all, I'm on Glenn's side with this one. Mild steel is one of the worst possible materials to work with, because it loves to tear (generally the cause is chip welding). It mills well with the sides of an end mill, however,...
by Harold_V
Thu Oct 15, 2020 3:27 pm
Forum: General Discussion
Topic: Repairing a cast brass part
Replies: 8
Views: 335

Re: Repairing a cast brass part

Thanks for the link, Glenn.

H
by Harold_V
Thu Oct 15, 2020 3:00 am
Forum: General Discussion
Topic: Repairing a cast brass part
Replies: 8
Views: 335

Re: Repairing a cast brass part

Yep, I agree, but you can't build with silver solder, so you must make a piece that will get soldered to the casting. Surfaces should be good fits, and you can expect the joint to be in the neighborhood of .002" thick. Silver solder is not good at filling, as it flows too easily. The repair, if done...
by Harold_V
Sat Oct 10, 2020 4:45 pm
Forum: Lathes
Topic: Sometimes is smart to change approach
Replies: 13
Views: 803

Re: Sometimes is smart to change approach

My question is at what point did you abandon the 7 x 14 and turn to more robust machines? That aside, I tip my hat to you for your exceptional results. Don't get the idea that I am not a carbide fan. I use it regularly, including brazed types. It's a wonderful step up from HSS when one can take adva...
by Harold_V
Thu Oct 08, 2020 1:37 am
Forum: Lathes
Topic: Sometimes is smart to change approach
Replies: 13
Views: 803

Re: Sometimes is smart to change approach

A parting tool likes to be a bit below center, otherwise it will not plunge until pushed too hard and then you know what happen. Some people will not agree with me on this but is what my little lathe wants. The one thing to remember with a parting tool is that on light duty machines with the tool b...
by Harold_V
Tue Oct 06, 2020 7:48 pm
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: #12 x #11 Brown & Sharpe sleeve
Replies: 0
Views: 279

#12 x #11 Brown & Sharpe sleeve

Anyone on the board have a sleeve as described in the subject line that they are willing to part with for a reasonable fee? If so, please make mention of the condition and the price you'd like to receive, and include how you'd like to be paid.

Thanks.

Harold
by Harold_V
Tue Oct 06, 2020 1:45 am
Forum: General Discussion
Topic: REMOVING rivetts from NAME PLATES
Replies: 9
Views: 611

Re: REMOVING rivetts from NAME PLATES

Yeah, I had this conversation (by phone) with Patio, one of our readers, and a close friend, and he suggested the same thing. While what you say has merit, what's really important in this case is knowing what the machine is, and the model number. While the model may not be clear without a plaque (th...
by Harold_V
Mon Oct 05, 2020 4:02 pm
Forum: Grand Scale Railroading
Topic: Mesa Grande fire
Replies: 14
Views: 1361

Re: Mesa Grande fire

One of the chief problems with larger scale is the lack of affordable machinery that is required to build the equipment. Space for the equipment is also an issue for most folks.

H
by Harold_V
Sun Oct 04, 2020 4:06 pm
Forum: General Discussion
Topic: REMOVING rivetts from NAME PLATES
Replies: 9
Views: 611

Re: REMOVING rivetts from NAME PLATES

What Russ said. My experience with drive screws is that they are rarely soft enough to drill with HSS, and a solid carbide drill in a drill motor is pretty much an invitation for breakage. I recently finished rebuilding a #2 Cincinnati cutter grinder. The machine was built in '43, a war machine. The...