Search found 18532 matches

by Harold_V
Thu Jul 22, 2021 1:52 am
Forum: General Discussion
Topic: Refurbish G8 belt grinder platen
Replies: 25
Views: 664

Re: Refurbish G8 belt grinder platen

I didn't realize hard anodizing was that hard. Think grinding wheel. Hard anodizing is simply a conversion from aluminum to aluminum oxide. The hard anodize process offers the luxury of greater depth, very unlike type 1 and type 2. how it would deal with that heat (transfer and direct friction) is ...
by Harold_V
Thu Jul 22, 2021 1:33 am
Forum: General Discussion
Topic: Restoring bench grinder
Replies: 8
Views: 345

Re: Restoring bench grinder

The end bells are most likely permanent mold cast aluminum, assuming the motor is of any quality at all. Without seeing it in person, it's really hard to say. Forget applying heat. Any attempt to weld or braze the end bell offers a great risk of total failure, which would be particularly true if it ...
by Harold_V
Wed Jul 21, 2021 3:07 pm
Forum: General Discussion
Topic: Delta Milwaukee Toolmaker Grinder owners
Replies: 2
Views: 104

Re: Delta Milwaukee Toolmaker Grinder owners

That's interesting. I recently restored an early Cincinnati #1 cutter grinder. The screw/nut assembly for the cross slide was worn badly, with the nut pretty much trashed, although it did still function. It stands to reason that if there was enough wear on the nut to fail, the screw, too, had issues...
by Harold_V
Wed Jul 21, 2021 2:59 pm
Forum: General Discussion
Topic: Refurbish G8 belt grinder platen
Replies: 25
Views: 664

Re: Refurbish G8 belt grinder platen

Interesting thought, chrome plating. On that same line of thinking, I can think of no good reason why an aluminum platen wouldn't work, assuming it was hard anodized once machined to fit. The only issue I can think of is the coefficient of expansion might be excessive, but the resulting hard surface...
by Harold_V
Wed Jul 21, 2021 2:33 pm
Forum: General Discussion
Topic: Restoring bench grinder
Replies: 8
Views: 345

Re: Restoring bench grinder

Agree with Russ, although by using a release, so the bearing isn't bonded to the housing.

H
by Harold_V
Wed Jul 21, 2021 1:00 am
Forum: General Discussion
Topic: Restoring bench grinder
Replies: 8
Views: 345

Re: Restoring bench grinder

Do you have a metal lathe? If so, you can sleeve the exterior of the end bell to shrink it back to it's proper position. If you do your work well, it will be restored to original size and work just fine. I'm assuming that the outer diameter was machined originally, so it will serve as a locator for ...
by Harold_V
Tue Jul 20, 2021 3:04 pm
Forum: General Discussion
Topic: MLA Filing Machine
Replies: 4
Views: 580

Re: MLA Filing Machine

I'd like to comment on your tenacity. The way you've approached the machining of this kit is remarkable. Of special interest is the way you drilled and counterbored the back plate.

Well done!

H
by Harold_V
Mon Jul 19, 2021 2:39 pm
Forum: Milling Machines
Topic: Power Z axis
Replies: 26
Views: 801

Re: Power Z axis

If you enjoy live steam and have never seen a Big Boy, don't miss the opportunity. While I've not seen one under power, I have stood next to one that is on static display in Wyoming. Huge critter, it is. I have a newspaper article, published in the early 60's, detailing the destruction of several of...
by Harold_V
Sun Jul 18, 2021 1:21 am
Forum: General Discussion
Topic: Interesting vise
Replies: 7
Views: 346

Re: Interesting vise

I suspect that they aren't made due to cost, when it's dead easy for those with a CNC to contour soft jaws. Imagine creating each of those components to exacting tolerance. If they fit properly, they most likely are rather robust due to the large area of support. If not, all bets are off. That is on...
by Harold_V
Sun Jul 18, 2021 1:16 am
Forum: Lathes
Topic: lathe compound power feed
Replies: 4
Views: 406

Re: lathe compound power feed

center is same lowes crap round rod power feed with speed control, no filing, fine emery 500 grit then 1200 grit. hope you can see difference. Very nice! Aside from aesthetics, you're really ahead of the game if you can eliminate a file. I can't think of an easier way to lose roundness and concentr...
by Harold_V
Sun Jul 18, 2021 1:04 am
Forum: Milling Machines
Topic: today's project; rorary table chuck mount
Replies: 4
Views: 271

Re: today's project; rorary table chuck mount

Yep! What Russ said. It is impossible for anyone to know what project they may face in the future. If you can obtain or build tooling that is adaptable, so much the better!

Nice job!

Do explore soft jaws. They are the magic bullet for holding.

H
by Harold_V
Fri Jul 16, 2021 1:43 am
Forum: Build Log
Topic: 3/4-inch scale B&O P7d Cincinnatian
Replies: 19
Views: 1228

Re: 3/4-inch scale B&O P7d Cincinnatian

Wow! Beautiful engine. Thanks for posting.

H