Search found 1512 matches

by earlgo
Fri Apr 27, 2012 8:35 am
Forum: Lathes
Topic: Possible issue?
Replies: 31
Views: 4798

Re: Possible issue?

From skimming the posts it would appear that everyone seems to be hung up on being able to align the lathe so one can take a long cut that is cylindrical. I learned long ago that trying to do this with more than 2.5 diameters hanging out of the chuck is not going to work, due to deflection, misalign...
by earlgo
Sun Apr 08, 2012 10:27 am
Forum: Milling Machines
Topic: Milling machine ram dove tail angle
Replies: 12
Views: 2168

Re: Milling machine ram dove tail angle

How could you have a T&C grinder and not use it? It is far more useful than just sharpening tools. I had my inexpensive Delta Toolmaker for 20 years before I inherited a mill. I am learning that both are important, but one keeps the other's cutters sharp and working properly, and the other helps mak...
by earlgo
Thu Mar 01, 2012 6:41 pm
Forum: Lathes
Topic: Threading question
Replies: 22
Views: 2990

Re: Threading question

zzZZZZZZ nnHuh? The edition I have has a 1966 date inside and is the Revised Edition 56. I got it at the Colorado School of Trades in 1970. Back to the threading thread... An often missed useful threading procedure is to set the compound feed at 29° to the right of perpendicular (straight in). This ...
by earlgo
Wed Feb 29, 2012 10:46 pm
Forum: Lathes
Topic: Threading question
Replies: 22
Views: 2990

Re: Threading question

Sorry, I didn't realize it was a pay site. I guess the 1st book is "free". I didn't go further than see it was available. Something about reading all the instructions first...
by earlgo
Wed Feb 29, 2012 10:31 pm
Forum: Lathes
Topic: Threading question
Replies: 22
Views: 2990

Re: Threading question

http://www.ebooksx.com/How-to-Run-a-Lathe-by-South-Bend-Lathe_316359.html This is now a free book in pdf format so you can download it on your e-reader if you have one, or read it on your confuser screen. It is still available in print form probably on ebay or maybe Amazon. It was required when I s...
by earlgo
Tue Feb 28, 2012 6:42 pm
Forum: Lathes
Topic: Threading question
Replies: 22
Views: 2990

Re: Threading question

If your lathe does not have half nuts to start and stop the carriage feed then it must be older than the Sebastion and May mentioned in another thread. Even that one had half nuts, but it had no threading dial and the lead screw was 5 TPI. The only way to cut threads of 8TPI was to engage the half n...
by earlgo
Tue Feb 28, 2012 9:02 am
Forum: Lathes
Topic: Threading question
Replies: 22
Views: 2990

Re: Threading question

Mr. Wegman is right in that modifying the least expensive part is the prudent practice. Wish I could remember this...
by earlgo
Sun Feb 26, 2012 11:56 am
Forum: Lathes
Topic: DRO's on Lathe questions
Replies: 19
Views: 3199

Re: DRO's on Lathe questions

Image

Dro? we don't need no steenking Dro. I'd have been glad for dials, a compound and a thread dial on this old Sebastion and May. Used it for 20 years before I inherited my Atlas 12 x 36
by earlgo
Sat Feb 25, 2012 6:02 pm
Forum: Lathes
Topic: whats up with this cut
Replies: 29
Views: 6222

Re: whats up with this cut

Ok so I forgot the pictures.

click here

This is not so good

click here

This is better.

--earlgo
by earlgo
Sat Feb 25, 2012 5:09 pm
Forum: Lathes
Topic: whats up with this cut
Replies: 29
Views: 6222

Re: whats up with this cut

I don't think anyone mentioned that the top of the cutting tool should be on the centerline of the part being turned. An easy way to accomplish this is to gently "pin" a flat item like a measuring scale up against the side of the turned part. (Lathe off, of course). Then adjust the tool height until...
by earlgo
Sun Feb 05, 2012 12:29 pm
Forum: Milling Machines
Topic: clamping question
Replies: 21
Views: 4103

Re: clamping question

Your solution is really great looking, and not so big as the commercial models. Looks like a very neat setup and a lot lighter than a 1 pc vise. (We older folk are sensitive to things like that.)
by earlgo
Sat Feb 04, 2012 11:05 am
Forum: Lathes
Topic: Is This an Acceptable Way to Set Up on Faceplate?
Replies: 29
Views: 4202

Re: Is This an Acceptable Way to Set Up on Faceplate?

Sometimes one can use the appropriately sized carriage bolts through the back of the faceplate to drive dogs that don't reach the slots. Use two the same length for balance. Also one can use a broken MT drill for a center if the 60° cone is ground/turned on the stub. This allows a short or long cent...