Search found 1337 matches

by liveaboard
Tue Jan 19, 2021 6:09 pm
Forum: Milling Machines
Topic: ROCKWELL 21-122 milling machine REBUILD
Replies: 8
Views: 2391

Re: ROCKWELL 21-122 milling machine REBUILD

That should be illegal.
by liveaboard
Fri Jan 15, 2021 10:39 am
Forum: General Discussion
Topic: angular contact bearings
Replies: 19
Views: 890

Re: angular contact bearings

I made something like that for my swinging mini-hoist. The load on the end of the arm is maximum 1,000 lb, but due to the low headroom, and therefor the very short pivot, the leverage on the bearings is rather high. I used a couple of leftover bearings I had, one is a used double row wheel bearing f...
by liveaboard
Tue Jan 12, 2021 10:44 am
Forum: General Discussion
Topic: 1 in 12 taper?
Replies: 11
Views: 367

Re: 1 in 12 taper?

I've only done it on a lathe; I just ignored the trig and the degrees, and set the compound slide at [in my case] 5:1 for a 10:1 taper. I did that by putting a dial gauge on it against a test bar, and counting off 10 revolutions of the compound screw; when the dial gauge showed a reading equal to 2 ...
by liveaboard
Sun Jan 10, 2021 8:11 am
Forum: Lathes
Topic: Mystery.
Replies: 1
Views: 230

Re: Mystery.

Stolen for scrap? Large lathes can have strange economics. Large shops usually have financing and contracts, and buy new machines. Small independent shops can't house them and rarely have need of a large machine. Demand is small. I used to live in India; new shops were opening all the time, financed...
by liveaboard
Thu Jan 07, 2021 4:09 pm
Forum: General Discussion
Topic: Creating spinning top out of Aluminum
Replies: 14
Views: 1853

Re: Creating spinning top out of Aluminum

abstruse1 wrote:
Wed Jan 06, 2021 6:08 pm


top is a disk with spindle
by liveaboard
Tue Jan 05, 2021 4:03 pm
Forum: General Discussion
Topic: Compressor timer switch question
Replies: 35
Views: 1264

Re: Compressor timer switch question

Something to remember is that most home shop compressors have unloader valves. If you use a device other than the pressure switch to stop the power, the unloader valve won't get triggered and when restarted the motor could be stalled [some will melt, ask how I know], or the belt might slip to destru...
by liveaboard
Mon Jan 04, 2021 4:23 pm
Forum: General Discussion
Topic: 10-start left- and right-hand thread
Replies: 8
Views: 490

Re: 10-start left- and right-hand thread

I'm not much into making things that have no purpose; but that Russian guy sounded like he was having great fun all the way through. Yeah, using a motorized tool as a thread cutter; that's a neat idea. But he was cutting aluminum. If you want to do that with a harder material, the load on the tool m...
by liveaboard
Mon Jan 04, 2021 7:18 am
Forum: General Discussion
Topic: Compressor timer switch question
Replies: 35
Views: 1264

Re: Compressor timer switch question

What you're looking for is a general use programable delay relay / time relay. Some have many functions you can select with micro-slide switches. So each time it runs the timer starts, then when the power is interrupted and starts again the time starts from the beginning. I use a couple of them for ...
by liveaboard
Sun Jan 03, 2021 6:13 pm
Forum: 3-in-1 Metalworking Machines
Topic: VFD to 2 motors
Replies: 27
Views: 1464

Re: VFD to 2 motors

I got mine on ebay for $50.
Sometimes you can get a bargain if you wait.
by liveaboard
Sat Jan 02, 2021 12:36 pm
Forum: 3-in-1 Metalworking Machines
Topic: VFD to 2 motors
Replies: 27
Views: 1464

Re: VFD to 2 motors

I think he means a plug outlet.
by liveaboard
Sat Jan 02, 2021 11:58 am
Forum: General Discussion
Topic: Iowa Class Battleship Machine Shop
Replies: 13
Views: 1492

Re: Iowa Class Battleship Machine Shop

were the machines usable?
by liveaboard
Fri Jan 01, 2021 3:20 am
Forum: General Discussion
Topic: Conic Clutch design
Replies: 6
Views: 472

Re: Conic Clutch design

There is also the issues of galling and sticking, spinning and slipping... I looked into it once for a project I never built. Design will depend on the materials of the parts, the force holding them together when engaged, the force releasing them, the torque acting on them, and so on. If someone has...