I picked up a armature lathe many years back at a yard sale . I
asked the guy how much for te armature lathe & he said " is
that what that is " . He gave it to me cause I was the only guy
out of 50-75 people that knew what it was . Have used it a fair
amount over the years .
.?
If ya ever see one of these at a yard sale & ya can get it
cheap their on the handy side .
I've always used scotch pads instead of sand paper over teh years
, their a bit cleaner then sand paper . Here's some scotch pad
info that some of ya may find interesting
SCOTCH-BRITE
GRIT CHART
3M
Scotch Brite Nylon Pads:
7445
- White pad, called Light Duty Cleansing - (1000) 1200-1500 grit
7448
- Light Grey, called Ultra Fine Hand - (600-800) 800 grit.
6448
- Green (?), called Light Duty Hand Pad - (600) 600 grit
7447
- Maroon pad, called General Purpose Hand - (320-400) 320 grit
6444
- Brown pad, called Extra Duty Hand - (280-320) 240 grit
7446
- Dark Grey pad, called Blending Pad (180-220) 150 grit
7440
- Tan pad, called Heavy Duty Hand Pad - (120-150) 60(?)
Green
Scotch Brite is available EVERYWHERE. It's 600 grit.
Blue
Scotch-Brite is considered to be about 1000 grit.
(The
value inside the parentheses is directly from 3M.)
3M
Chart
Less
Aggressive --------> More Aggressive
7445
7448 6448 7447 6444 7446 7440
Finer
Finish --------> Coarser Finish
animal
On 7/1/24 7:33 PM, Tony Smith wrote:
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You
don’t need to turn it, you just need to clean it.
?
By
turn I meant put it in the chuck and spin it by hand,
holding? the sandpaper in the other.
?
Here’s
some good pictures showing the general idea: ,
obviously a smaller motor than what you’ve got.
?
“kinda
rough” is an understatement.? Basically that carbon can
build up between the copper rails and cause a short, might
be your problem.? But yeah, shiny & smooth is good.?
Once you get all the black gunk off you be able to see if
there any further damage that you’ll need a lathe to fix,
things like gouges & pitting.
?
What
do you mean by belt?
?
Tony
?
?
?
?
My other lathe is not running so I cannot
turn the commutator.
That commutator does look kinda rough.
What is the belt?
Ralph