Search found 1755 matches

by tornitore45
Fri Feb 14, 2020 9:50 am
Forum: General Discussion
Topic: Parting tool holder
Replies: 21
Views: 378

Re: Parting tool holder

Banggood's search on their website is awful. Is not just Banggood, there are many companies that do not understand the issue. Parts that are mostly characterize by dimensions need to have a dimension selector. I do not want to look 97 pages of randomized ball bearings or gears to find the one I nee...
by tornitore45
Fri Feb 07, 2020 2:47 pm
Forum: Lathes
Topic: Change lead screw to metric?
Replies: 29
Views: 1511

Re: Change lead screw to metric?

Bummer! You could have used the carriage to make some of the slot depth parallel to the axis and then use the compound for the bottom inclined surface
by tornitore45
Fri Feb 07, 2020 1:49 pm
Forum: General Discussion
Topic: Mill and Lathe Recommendations for High School Machine Shop
Replies: 19
Views: 754

Re: Mill and Lathe Recommendations for High School Machine Shop

Many have made negative comments on 3 in 1 machines. In addition to all the negatives the long and constant requirement to change set up is even more of an impact when the class is time limited. The student will spend 1/2 the class to reconfigure the machine. The genial idea is to let some machines ...
by tornitore45
Thu Feb 06, 2020 1:08 pm
Forum: General Discussion
Topic: What is the difference.....
Replies: 11
Views: 459

Re: What is the difference.....

John Hasler type faster than I.
by tornitore45
Thu Feb 06, 2020 1:07 pm
Forum: General Discussion
Topic: What is the difference.....
Replies: 11
Views: 459

Re: What is the difference.....

The question is not clear, if I guess correctly A rotary phase converter is an oversized 3 phase motor powered with one phase. It will not self start like any induction motor missing the starting winding will not start. It will buzz undecided whether to spin CW on CCW because of inherent simmetry. O...
by tornitore45
Thu Feb 06, 2020 8:18 am
Forum: Lathes
Topic: Change lead screw to metric?
Replies: 29
Views: 1511

Re: Change lead screw to metric?

But I have to cut the keyway with a [gasp!] file. I have only done it twice in aluminum but consider drilling a small hole to remove most of the metal and then use the lathe as a shaper. Locked Chuck, Tool on the tool post ... in and out advancing the cross slide a couple of thousand at the time. I...
by tornitore45
Thu Feb 06, 2020 7:41 am
Forum: General Discussion
Topic: Single vs double end end mills
Replies: 13
Views: 701

Re: Single vs double end end mills

John, I do not see any source where a double cost less than a single. A double cost usually less that TWO single.
by tornitore45
Wed Feb 05, 2020 3:52 pm
Forum: General Discussion
Topic: Single vs double end end mills
Replies: 13
Views: 701

Re: Single vs double end end mills

I asked the same a while back and the "village" opinion was negative due to the fact that as the collet sucks up the tool it may ruin the other end. I use them because they cost less than two singles and by using 2 cents worth of care there is no problem. There is a substantial difference of attitud...
by tornitore45
Wed Feb 05, 2020 7:29 am
Forum: Lathes
Topic: Change lead screw to metric?
Replies: 29
Views: 1511

Re: Change lead screw to metric?

The thing I hate the most about changing gear is getting all dirty, jiggling the gears to slip over the shaft key and handling all the fiddly parts involved. I have coded the constraints about the 4 gears involved into four conditions my spreadsheet analyze and report if anyone is not met. When I ge...
by tornitore45
Sun Feb 02, 2020 2:09 pm
Forum: Lathes
Topic: Change lead screw to metric?
Replies: 29
Views: 1511

Re: Change lead screw to metric?

Calculating the gear train is the easy part. Coming up with a solution that physically fits on the banjo is the hard part.
by tornitore45
Sun Feb 02, 2020 10:15 am
Forum: General Discussion
Topic: New in town
Replies: 23
Views: 1149

Re: New in town

One thing to consider is that 12L14 rusts practically overnight.
by tornitore45
Sat Feb 01, 2020 1:14 pm
Forum: General Discussion
Topic: New in town
Replies: 23
Views: 1149

Re: New in town

https://www.grizzly.com/metal-lathes Feast your eyes As previously discussed the 7" class are just sufficient but is more work on your part. The 9" class can do all you need. Since threading is standard procedure in doing inserts and adapters you will end up mastering it. Is not difficult. One thing...