Search found 525 matches

by Bill_Cook
Wed Jan 08, 2020 2:42 am
Forum: Lathes
Topic: "Put it in 'R' for Race"
Replies: 12
Views: 4137

Re: "Put it in 'R' for Race"

According to the brochure, the headstock is '100% anti-friction'. http://www.vintagemachinery.org/pubs/1004/3598.pdf Gear oil is pumped up into a small reservoir in the top cover of the headstock that drains into some of the bearings. I can take the cover off of it to see if it fills in reverse. It ...
by Bill_Cook
Sat Dec 28, 2019 3:14 am
Forum: Lathes
Topic: "Put it in 'R' for Race"
Replies: 12
Views: 4137

Re: "Put it in 'R' for Race"

Thanks for the help. The only info I’ve found on it is some sales literature over at Vintage Machinery. The machine had been protected and stored for 15 or 20 years. Before that it had been used in a millwright department. The motor is more modern. It’s mounted on a separate, fabricated stand with i...
by Bill_Cook
Thu Dec 26, 2019 11:18 pm
Forum: Lathes
Topic: "Put it in 'R' for Race"
Replies: 12
Views: 4137

"Put it in 'R' for Race"

I’ve recently gotten a 16 x 30 American Tool Works High duty lathe (gear head). Electrically and mechanically it has no provision to run in reverse. Is it possible that it isn’t ment to be run backwards? Maybe the lube pump in the head won’t pump in reverse? I’ll be driving it with a VFD, so reversi...
by Bill_Cook
Fri Oct 25, 2019 11:48 pm
Forum: General Discussion
Topic: Using Granite Countertop as surface plate????
Replies: 31
Views: 17815

Re: Using Granite Countertop as surface plate????

Before I acquired a pink Starret I used the mill table.
by Bill_Cook
Fri Oct 25, 2019 11:39 pm
Forum: General Discussion
Topic: Mobile Base for a 3 in 1 lathe mill
Replies: 5
Views: 2059

Re: Mobile Base for a 3 in 1 lathe mill

I have a few machines mounted on mobile bases, but none of them are very sensitive to an imperfect floor. The bases allow for a rough adjustment to prevent rocking. Stand01.jpg I do have an old 11 inch swing by 36 inch between centers Sheldon lathe built during the Second World War. The tail end of ...
by Bill_Cook
Fri Aug 23, 2019 11:43 pm
Forum: General Discussion
Topic: Which end mill to use
Replies: 25
Views: 6680

Re: Which end mill to use

1/8'th inch 6061-T531 will cut easily in one pass, and allow the use of the whole length of the flutes. Using the upper portion of the flutes will leave the tip fresh and sharp for another job, and closer to the shank the endmill is more rigid.
by Bill_Cook
Sun Aug 04, 2019 6:34 pm
Forum: Lathes
Topic: Wacking the Morse taper out of the spindle
Replies: 15
Views: 8462

Re: Wacking the Morse taper out of the spindle

A morse taper is very slight and doesn't need to be drawn in very hard to hold.
by Bill_Cook
Sun Aug 04, 2019 4:30 pm
Forum: Lathes
Topic: Metric Threading With Six Gears
Replies: 0
Views: 3317

Metric Threading With Six Gears

Although I work in inches, and have been able to manipulate metric bolts to good affect, it would be nice to have metric threading ability. My Sheldon has the metric change gear tag on it but no gears. What a tease! After staring at the metric and quick change tags for some time it became apparent t...
by Bill_Cook
Sat Aug 03, 2019 10:22 pm
Forum: General Discussion
Topic: Replace v belt question
Replies: 8
Views: 2390

Re: Replace v belt question

Gates, for one, recommends not using a B belt on a pulley with a pitch diameter less than 5.4". That comes out to be 6" OD. The X series is a more flexible solution for smaller pulleys. That's all. The notches don't increase traction, cause vibration or noise. Another thing to be aware of is that wh...
by Bill_Cook
Mon Jul 29, 2019 12:22 am
Forum: Casting & Foundry Work
Topic: Baking Cores
Replies: 7
Views: 3918

Re: Baking Cores

The cores that get baked in the foundry I work in are baked on what appears to be clay slabs. They are heavy and brittle. I wonder if ceramic tiles would work.
by Bill_Cook
Sun Jul 28, 2019 11:49 pm
Forum: Lathes
Topic: My Sheldon lathe
Replies: 13
Views: 6293

Re: My Sheldon lathe

I picked up a Sheldon 11" lathe in the early to mid '90's with an 'E' drive. It has the War Board tag and a tag for metric threading - but no metric gears. It was/is badly worn, although the head stock bushings had been replaced. It will still split a thou on the diameter with a double finish cut. W...
by Bill_Cook
Tue Mar 26, 2019 7:25 pm
Forum: General Discussion
Topic: Self Tapping Screws Don't Self Tap
Replies: 9
Views: 2408

Re: Self Tapping Screws Don't Self Tap

Another solution would be to thread the holes with a tap, and use some quality machine screws.