Search found 145 matches

by TRX
Sat Sep 23, 2017 4:02 pm
Forum: General Discussion
Topic: bench grinder woes
Replies: 13
Views: 2004

Re: bench grinder woes

A fresh wheel - like the one a couple of days ago - has no visible runout, and I didn't feel any pulsing when I held the diamond dresser to it when I first spun it up.
by TRX
Sat Sep 23, 2017 3:05 pm
Forum: General Discussion
Topic: bench grinder woes
Replies: 13
Views: 2004

bench grinder woes

I bought a 6" Black & Decker bench grinder back, oh, maybe 1992. I used the wheel it came with until it was maybe 3" around, replaced it with a wheel from Wal-Mart, then one from Lowes, then in the last couple of years, various wheels from Harbor Freight, "Forney" brand from the local hardware store...
by TRX
Mon Aug 28, 2017 6:09 pm
Forum: Gunsmithing
Topic: Sharps update
Replies: 11
Views: 6664

Re: Sharps update

So, what's the next project?
by TRX
Sat Aug 26, 2017 8:26 pm
Forum: General Discussion
Topic: Buying new twist drills (ugh)
Replies: 21
Views: 2972

Re: Buying new twist drills (ugh)

Slightly off-topic, if you ever get a good deal on drills you don't need, snag them. Someone gave me a box of assorted Nachi drills a few years ago. They were mostly letter sizes, and odd ones at that - the ones in my drill index were still virgins. But hey, free tooling... Over the years I've put t...
by TRX
Fri Aug 25, 2017 2:22 pm
Forum: Casting & Foundry Work
Topic: Casting Aluminum tight to a steel hub
Replies: 4
Views: 3697

Re: Casting Aluminum tight to a steel hub

I have an engine block out in the shop, about 3-1/2" bore, that was die cast aluminum over iron liners. The liners have wavy ridges on the outsides so they can't shift if the engine overheats.
by TRX
Sun Aug 20, 2017 12:59 pm
Forum: General Discussion
Topic: Buying new twist drills (ugh)
Replies: 21
Views: 2972

SteveHGraham wrote:You can get a USA-made Rocky Mountain Twist Drill index for about $234 at Suncoast Precision Tools.
My 2x4 of spare drills doesn't look nearly as ghetto as it did a moment ago...
by TRX
Sat Aug 12, 2017 11:15 am
Forum: General Discussion
Topic: angle of diamond when dressing wheel?
Replies: 18
Views: 2720

Re: angle of diamond when dressing wheel?

While we're talking about dressing, is it best to do it with coolant on or coolant off?
by TRX
Tue Aug 08, 2017 2:23 pm
Forum: General Discussion
Topic: angle of diamond when dressing wheel?
Replies: 18
Views: 2720

Re: angle of diamond when dressing wheel?

I used to see crankshafts from a particular shop that miked out okay, but had a peculiar "threaded" look after they were washed. I did notice the operate swiped the diamond across the wheel pretty fast.
by TRX
Fri Aug 04, 2017 7:55 am
Forum: General Discussion
Topic: angle of diamond when dressing wheel?
Replies: 18
Views: 2720

Re: angle of diamond when dressing wheel?

How does that work when the diamond is pointed down below the centerline of the wheel, though?

That's what prompted the original question; within a short time, I saw pictures of diamonds pointed at about the same angle, but in two different directions.
by TRX
Wed Aug 02, 2017 9:45 pm
Forum: General Discussion
Topic: angle of diamond when dressing wheel?
Replies: 18
Views: 2720

Re: angle of diamond when dressing wheel?

Thanks!
by TRX
Wed Aug 02, 2017 4:07 pm
Forum: General Discussion
Topic: angle of diamond when dressing wheel?
Replies: 18
Views: 2720

Re: angle of diamond when dressing wheel?

The diamond is hexagonal or its holder is hexagonal?
by TRX
Wed Aug 02, 2017 2:54 pm
Forum: General Discussion
Topic: angle of diamond when dressing wheel?
Replies: 18
Views: 2720

angle of diamond when dressing wheel?

I was just looking at a dressing fixture for a bench grinder and noticed that the diamond isn't perpendicular to the wheel face; it's tipped so its axis points about ten degrees below the wheel centerline. I went out to the shop and looked at my Storm Vulcan crank grinder, and its diamond is tilted ...