Search found 81 matches

by RMinMN
Wed Feb 21, 2018 8:19 am
Forum: Lathes
Topic: Rear spindle issue
Replies: 4
Views: 1671

Re: Rear spindle issue

That does appear to be the nuts for preloading the bearing and locking. My mini lathe has about 3 threads beyond the lock nut. It might be possible to fit a spider onto those threads as there shouldn't be a significant load being carried by the spider. My manual shows the nut as a 27x1.5 so that has...
by RMinMN
Mon Feb 19, 2018 7:27 am
Forum: General Discussion
Topic: Machinists Level
Replies: 22
Views: 4459

Re: Machinists Level

If you require a certain level of precision, you buy that and pay the price. If your lathe has never been leveled, the precision of this level is better than any guess. You decide if the price for this level matches its presumed level of precision.
by RMinMN
Thu Feb 08, 2018 7:46 am
Forum: General Discussion
Topic: External turning with a boring head
Replies: 16
Views: 2428

Re: External turning with a boring head

My boring head has a threaded shank and could not be run in reverse. I drilled a hole at a convenient angle to intercept the shank thread almost tangentially then tapped the hole, then milled a divot on the shank thread where the set screw would touch. The set screw hold the tread from unscrewing. ...
by RMinMN
Fri Jan 19, 2018 7:34 am
Forum: Lathes
Topic: pulley size, variable speed
Replies: 9
Views: 2160

Re: pulley size, variable speed

Those step pulleys are available in several places if you use the correct search term. Try a Google search with the term "step sheave 5/8 bore" and you will get several choices for them.
by RMinMN
Tue Jan 16, 2018 8:45 am
Forum: Lathes
Topic: Looking to buy a new Lathe need some advice.
Replies: 16
Views: 6516

Re: Looking to buy a new Lathe need some advice.

The hardness of the teeth on the gears is manageable with carbide inserts but it needs a solid cut. Teeth on the gears will be an interrupted cut and each time the cutter hits a new tooth it will be like hitting the cutter with a hammer. The inserts are hard and brittle. Brittle things shatter when ...
by RMinMN
Mon Jan 08, 2018 1:49 pm
Forum: Lathes
Topic: Grizzly knurling tool
Replies: 6
Views: 2129

Re: Grizzly knurling tool

Will you be making a typical bump knurl, a scissors type, or a cut knurl similar to the one in this thread?
http://www.homemodelenginemachinist.com ... hp?t=27010
by RMinMN
Sun Jan 07, 2018 6:54 am
Forum: General Discussion
Topic: Band saw blades
Replies: 11
Views: 1604

Re: Band saw blades

Unless you are cutting hard materials or making lots of cuts a bandsaw blade should last quite a while. The usual enemy of the blade life is cutting speed. Set the speed a the lowest and the blade lasts longer but it will take a bit more patience if cutting large stock. Lubrication also improves bla...
by RMinMN
Thu Jan 04, 2018 6:43 am
Forum: Lathes
Topic: Starting a thread on the lathe with a die
Replies: 26
Views: 9508

Re: Starting a thread on the lathe with a die

Thank you for the welcome. I had been following this board as I wanted to learn more about using the machines I bought and to refresh memory or how machining should be done from the small amount of classwork I did some 40+ years ago. I supplemented this board with a couple others and watched a lot o...
by RMinMN
Tue Jan 02, 2018 9:08 am
Forum: Lathes
Topic: Starting a thread on the lathe with a die
Replies: 26
Views: 9508

Re: Starting a thread on the lathe with a die

Glenn, I thought about doing it on the lathe but I'm not well versed on threading up to a shoulder that small and I have about 14 to do as well. I wish I could do it, it's one skill I've avoided perfecting. I do like John and Mauros ideas and will give them a try today. Thanks for the input guys an...