Search found 592 matches

by J Tiers
Fri Nov 25, 2011 1:46 am
Forum: Lathes
Topic: Looks like I will be busy with a clean and refurbish job....
Replies: 11
Views: 3527

Re: Looks like I will be busy with a clean and refurbish job

Well it had to come apart to fit in the S10 under the cap, as well as just so it could be lifted in. I can't carry a lift AND the machine in there even if I take the cap off. And the machine with base weighed about a half ton, two guys were not lifting it safely, nor one guy (me) getting it out agai...
by J Tiers
Fri Nov 25, 2011 1:37 am
Forum: General Discussion
Topic: DC motor help
Replies: 30
Views: 4286

Re: DC motor help

The way the "brushes" that make contact to the rotating part are set affects the allowable rotation. if the motor will rotate either direction, the brush o=position may be a compromise. If the motor always will go one way, as a treadmill does, the brush position (angle etc) can be optimized for one ...
by J Tiers
Tue Nov 22, 2011 11:06 pm
Forum: Lathes
Topic: Looks like I will be busy with a clean and refurbish job....
Replies: 11
Views: 3527

Re: Looks like I will be busy with a clean and refurbish job

The QC looks a bit better now....... But that was just a break, I needed to get those parts under control..... more is coming apart for cleaning. http://img.photobucket.com/albums/0803/jstanley/Rivettgearboxreassembled.jpg http://img.photobucket.com/albums/0803/jstanley/rivettgearboxreassembled2.jpg
by J Tiers
Thu Nov 17, 2011 11:35 pm
Forum: Lathes
Topic: Looks like I will be busy with a clean and refurbish job....
Replies: 11
Views: 3527

Re: Looks like I will be busy with a clean and refurbish job

hee-hee..... it came home in pieces....... bed etc off cab. drive out, drawers out, etc. it is even farther broken down now, as every single little part is so dirty as to need individual attention.... as per the following: Slide assy http://img.photobucket.com/albums/0803/jstanley/rivett13.jpg heads...
by J Tiers
Wed Nov 16, 2011 10:23 pm
Forum: Lathes
Topic: Looks like I will be busy with a clean and refurbish job....
Replies: 11
Views: 3527

Re: Looks like I will be busy with a clean and refurbish job

J tiers, was it that dirty that you thought it was an Atlas? :lol: Nearly...... I saw it on CL and knowing I did NOT need it, I posted links to the PM antique machinery area..... A week later the voices in my head told me to look for it and call if the ad was still up...... so I did. Then the voice...
by J Tiers
Sun Nov 13, 2011 11:44 pm
Forum: Lathes
Topic: Looks like I will be busy with a clean and refurbish job....
Replies: 11
Views: 3527

Looks like I will be busy with a clean and refurbish job....

I bought this a week ago, and since it was owned by two successive drag racers/chassis builders/welders, it needs some serious work. Lots of it is nearly as dirty as railroad undercarriages. Some needs re-scraping, some parts need to be replaced. I'll be making most of them. Good thing I got it at w...
by J Tiers
Sat Nov 05, 2011 11:01 pm
Forum: General Discussion
Topic: RPC - Turn it off / Leave it on
Replies: 25
Views: 3453

Re: RPC - Turn it off / Leave it on

An RPC, or any other motor, typically draws about 30% to 40% of full load current at idle. But not to worry, the "power factor" is so low that the actual power "wasted" when it is idling is low. possibly 5% to 7% or so of losses. Not going to break the bank, but worth turning off if you won't be usi...
by J Tiers
Sun Oct 30, 2011 9:36 pm
Forum: General Discussion
Topic: End Mill Sharpening
Replies: 16
Views: 2997

Re: End Mill Sharpening

There are various systems for sharpening that are capable only of sharpening the end , and others, like the one in the pic above, that should be able to do the end and the flutes. I so far have found it cheaper to not bother. They go in the "needs sharpened" box, and when I get tired of looking at t...
by J Tiers
Sat Oct 15, 2011 8:03 pm
Forum: General Discussion
Topic: Drilling square holes.
Replies: 8
Views: 2437

Re: Drilling square holes.

yes, the original Watts drill system includes a guide. They still make a number of different drills for various numbers of sides..... Patent is, IIRC, as of about 1917. In the video, the guide must be internal to the head. The drill appears to have a guide section as well as a drill section. The ori...
by J Tiers
Sat Oct 15, 2011 7:55 pm
Forum: General Discussion
Topic: Another "wottizzit"
Replies: 7
Views: 1502

Re: Another "wottizzit"

I have a no-name about like that. 3 x 4" approx. but it is totally "in -scale" with the mill table. I put an alignment strip each way on the bottom to help hold it on the mill table. Have only used it a couple times, but it is handy enough. T-slots are so small that only small work fits it. http://i...
by J Tiers
Sun Sep 25, 2011 9:45 am
Forum: Lathes
Topic: Lathe Mounting
Replies: 10
Views: 2096

Re: Lathe Mounting

Eh......... a 1/4" top is a drum head...... yeah you shouldn't have vibrations just in general, but the top is thin regardless. Yes, a thicker top will reinforce the machine to some degree. If you search over at the HSM site, a fellow posting as "artfulbodger" just had a concrete bench made. I don't...
by J Tiers
Sun Sep 25, 2011 9:32 am
Forum: Lathes
Topic: Reaming question
Replies: 8
Views: 1775

Re: Reaming question

Taking carbon steel, the 100 rpm seems to come out OK on their chart. 5/8" = 0.625" and 0.625 x 3.14 = 1.96 " per rev. that's a bit over 6 turns per foot. Taking their suggestion of 15 to 60 f/min, at 15, then 15f/min x 6 turns/ft = 90 turns/min = 90 rpm. Highest speed given is 60 ft/min, which woul...