Search found 57 matches

by mm NE Iowa
Thu Mar 23, 2006 6:00 pm
Forum: General Discussion
Topic: How to run a 440 volt motor at home?
Replies: 9
Views: 3967

Jim, Several years ago I bought an Emco Super 11 with a 380v 50hz motor. After talking with a VFD expert, I think recommended by Dealers Electric, I wired the three leads for low speed directly to the VFD. Perameters were set for max of 200% frequency and an increase of voltage. This was with a 220v...
by mm NE Iowa
Sat Jan 28, 2006 4:46 pm
Forum: General Discussion
Topic: Tapping in fiberglass
Replies: 3
Views: 3388

Tapping in fiberglass

I need to tap a number of deep, blind holes in fiberglass. The tap size is 6-32. The debth will be about 5/8 of an inch. The only taps I have available are 4 flute hand taps and 2 flute, spiral point. I do not have any spiral taps this size. I will be using a small tapping head. Which style tap and ...
by mm NE Iowa
Fri Apr 01, 2005 11:46 pm
Forum: General Discussion
Topic: glueing sanding belts
Replies: 2
Views: 748

glueing sanding belts

I am in the position of needing to fabricate my own sanding belts. Because I am driving these with a shop built "belt drive roller", I can use either a half lap joint or a butt joint with tape backing. I have tried duct tape, reinforced masking tape, and 3M weather strip adhesive. All of these cut l...
by mm NE Iowa
Fri Feb 18, 2005 2:36 pm
Forum: General Discussion
Topic: Boring proceedure
Replies: 7
Views: 1560

Re: Boring proceedure

Roy,

I have had an ASONG brand power knee on my BP for several years. Other than having to make a spacer to mount it originally, there have been no problems.

It actually came from Harbor Freight and has the Central Machinery sticker on it. -- mm
by mm NE Iowa
Sun Feb 06, 2005 10:16 pm
Forum: General Discussion
Topic: need help for finishing stainless bolts...
Replies: 20
Views: 2870

Re: need help for finishing stainless bolts...

This attachment shows a knob with the lever welded on, ground, sanded, and polished.
by mm NE Iowa
Sun Feb 06, 2005 10:12 pm
Forum: General Discussion
Topic: need help for finishing stainless bolts...
Replies: 20
Views: 2870

Re: need help for finishing stainless bolts...

Nyabinghi, I have been doing a lot of stainless polishing this winter and finally figured out what works for me. The inital shaping of the knobs is done in the lathe, then transfered the polishing lathe. Once the proper collet is in the lathe, the throw of a lever locks the knob in place or loosens ...
by mm NE Iowa
Tue Feb 01, 2005 7:49 pm
Forum: General Discussion
Topic: ideas for right angle spindle
Replies: 9
Views: 2610

Re: ideas for right angle spindle

Jim, If you are going to make one, possibly more compact than bevel gears would be a pair of cogged pulleys. Think of a Dynafile with the idler being threaded to accept "aircraft" style countersinks. This could then be powered by a cheap right angle die grinder throttled down to about 5000 RPM. Just...
by mm NE Iowa
Mon Dec 13, 2004 5:41 pm
Forum: General Discussion
Topic: internal grinding questions
Replies: 4
Views: 774

Re: internal grinding questions

Andy,

I am open to suggestions, but it must be absolutely non-magnetic, contain no graphite, and be galvanically compatible with stainless. -- mm
by mm NE Iowa
Mon Dec 13, 2004 3:02 pm
Forum: General Discussion
Topic: WTD: Boyar Schultz 612 Surface Grinder parts list
Replies: 13
Views: 4358

Re: WTD: Boyar Schultz 612 Surface Grinder parts list

Marty,

I have twelve pages of the manual for a 6-18 Challenger on my computer as JPEG. I thought I got it from the dropbox several years ago. If it is not there, I can email them. -- mm
by mm NE Iowa
Mon Dec 13, 2004 2:51 pm
Forum: General Discussion
Topic: internal grinding questions
Replies: 4
Views: 774

internal grinding questions

I have drilled, bored, ground, and polished some 304 stainless trying to make roller bearing races. The results are good enough to meet my specs: low speed and low pressure. However, the project did raise three questions. 1) What makes mounted stones load up? Too fast, slow, hard, or soft? 2) How do...
by mm NE Iowa
Mon Mar 29, 2004 1:29 pm
Forum: Lathes
Topic: lathe cut off tool
Replies: 10
Views: 4145

Re: lathe cut off tool

I cannot get Jim's method of multiple pictures to work. This attachment shows the chips. -- mm
by mm NE Iowa
Mon Mar 29, 2004 1:04 pm
Forum: Lathes
Topic: lathe cut off tool
Replies: 10
Views: 4145

Re: lathe cut off tool

Yesterday I did two rather large cutoffs: 1.5" OD, .75" ID in stringy 300 series stainless. As usual, there were no problems. Usually stainless can be parted off almost as fast as using the cheap power saw. The lathe is a SB Heavy 10 with excellent spindle bearings and a worn crossfeed nut. The cuto...