Search found 6972 matches

by GlennW
Thu Jan 13, 2022 6:23 am
Forum: Lathes
Topic: Rookie Lathe Soft Jaw Questions
Replies: 38
Views: 1315

Re: Rookie Lathe Soft Jaw Questions

By the time you make the key, wouldn't it be just as quick to just mill the jaw with the key?
by GlennW
Wed Jan 12, 2022 7:39 am
Forum: Lathes
Topic: Rookie Lathe Soft Jaw Questions
Replies: 38
Views: 1315

Re: Rookie Lathe Soft Jaw Questions

---and I have a set of fasteners each with a sturdy thick washer for each set---because after usage those aluminum holes want to deform and close inward onto the fasteners Sounds like there may be some serious over tightening of the fasteners happening there. The keyways locate the jaws and keep th...
by GlennW
Sat Jan 08, 2022 11:33 am
Forum: Lathes
Topic: Rookie Lathe Soft Jaw Questions
Replies: 38
Views: 1315

Re: Rookie Lathe Soft Jaw Questions

If you are working with thin wall tubing you definitely don't want six point contact. You wand the diameters to match to keep from distorting the tubing.

When that is the case, I bore a piece of stock first to get the diameter set and then bore the soft jaws.
by GlennW
Tue Jan 04, 2022 6:22 am
Forum: General Discussion
Topic: How precise are measuring instruments?
Replies: 40
Views: 3300

Re: How precise are measuring instruments?

If all your blocks are in increments of 0.025, then the spindle is at the same point in the rotation. The object of the game with gage blocks is to match the gage block stack to the desired dimension and then clamp the micrometer onto the stack and verify a correct reading. My micrometers are calib...
by GlennW
Sun Jan 02, 2022 9:32 pm
Forum: General Discussion
Topic: LED shop lights?
Replies: 21
Views: 838

Re: LED shop lights?

Thanks, Glenn. I'm looking at those. There is a 20-pack for $100 which makes it only $5 per tube and $10 per fixture. That's not much more than the old fluorescent tubes. Have any of you tried these? Yes. These were the easiest to use. The first ones I tried were direct replacement, which still use...
by GlennW
Sun Jan 02, 2022 8:21 pm
Forum: General Discussion
Topic: LED shop lights?
Replies: 21
Views: 838

Re: LED shop lights?

by GlennW
Wed Dec 29, 2021 8:28 pm
Forum: Lathes
Topic: Guidelines for Boring Tool Grinding
Replies: 20
Views: 989

Re: Guidelines for Boring Tool Grinding

Is the tip of the tool bit a sharp point or a radius?

A small radius for a finish cut might work better.

Also look below the cutting edge and make sure no part of the tool bit is rubbing the stock you are cutting.
by GlennW
Mon Dec 27, 2021 7:05 pm
Forum: General Discussion
Topic: How precise are measuring instruments?
Replies: 40
Views: 3300

Re: How precise are measuring instruments?

I'm referring to the slop in the ways/gibs, not the perpendicularity of the axis movement. Mill ways wear in the center of travel. Tight at the travel limits and loose in the center. I'm looking at checking a machinists square for error in tenths, and your method would be good for looking for someth...
by GlennW
Mon Dec 27, 2021 7:54 am
Forum: General Discussion
Topic: How precise are measuring instruments?
Replies: 40
Views: 3300

Re: How precise are measuring instruments?

There's another way of checking the accuracy of a non adjustable solid machinist square that's fast and dirt simple if you have a mill, a good trustworthy milling vise with a straight properly ground fixed jaw and a 10ths capable dti. Zero the mill vise to the tables X axis as normal. ZERO/ZERO to ...
by GlennW
Tue Dec 21, 2021 1:43 pm
Forum: General Discussion
Topic: Love Joy coupling
Replies: 29
Views: 2279

Re: Love Joy coupling

The chance of drilling it with a keyway in it and staying concentric and round are slim.

It would need to be bored.

Boring and then single point threading it on a lathe would be the best chance for concentricity if set up properly in the lathe chuck and indicated in. Possibly soft jaws.