Search found 1126 matches

by John Hasler
Wed Apr 17, 2019 1:18 pm
Forum: The Junk Drawer
Topic: Backing up computer files
Replies: 23
Views: 489

Re: Backing up computer files

I agree. I have scrapped out numerous disk drives ranging from old 14" head-per-track drives to modern 3.5" inchers (the old ones have more useful parts) and have left the disks out in my unheated shop at below zero temperatures (some got left outside in the rain and snow). I've never seen the coati...
by John Hasler
Sun Apr 14, 2019 7:55 pm
Forum: The Junk Drawer
Topic: Backing up computer files
Replies: 23
Views: 489

Re: Backing up computer files

Uncle Sam is the least of your worries if you use "cloud storage". Besides, you're already trusting Microsoft or Apple (and probably Google and Facebook as well).
by John Hasler
Thu Apr 11, 2019 7:13 pm
Forum: General Discussion
Topic: machining should square
Replies: 14
Views: 438

Re: machining should square

whateg0 wrote:
Thu Apr 11, 2019 5:10 pm
If you want to do in situ, could you affix a dremel to the tool rest and lightly grind it square while it runs? Doesn't sound like it would take much.

Dave
Best idea yet.
by John Hasler
Thu Apr 11, 2019 3:01 pm
Forum: General Discussion
Topic: machining should square
Replies: 14
Views: 438

Re: machining should square

I'm with Dianne. There isn't much to taking one of those motors apart.
by John Hasler
Thu Apr 11, 2019 12:53 pm
Forum: General Discussion
Topic: Cutting Mats
Replies: 8
Views: 274

Re: Cutting Mats

What's a gunsmithing mat?
by John Hasler
Thu Apr 11, 2019 8:19 am
Forum: General Discussion
Topic: Measuring a diameter without a caliper
Replies: 19
Views: 643

Re: Measuring a diameter without a caliper

This is the elegant solution. Note that accuracy is highly sensitive to the ratio of chord to radius.
by John Hasler
Wed Apr 10, 2019 8:31 am
Forum: General Discussion
Topic: Measuring a diameter without a caliper
Replies: 19
Views: 643

Re: Measuring a diameter without a caliper

Marv is right, I have a PI tape that uses a vernier to read to 3 decimals. But it assumes the part is round and gives the average dia. The tape measures that crank into a housing are flat, ie no form to keep them straight so they will wrap around a cylinder. Think they're only divided in 1/8ths tho...
by John Hasler
Tue Apr 09, 2019 9:10 am
Forum: General Discussion
Topic: Measuring a diameter without a caliper
Replies: 19
Views: 643

Re: Measuring a diameter without a caliper

Box it in with squares, measure the sides, average.
by John Hasler
Mon Apr 08, 2019 8:34 am
Forum: The Junk Drawer
Topic: SS is toxic in California
Replies: 23
Views: 1136

Re: SS is toxic in California

According to California, coffee causes cancer. Seriously, read this fascinating critique of Cal's over-the-top labeling of everything in sight... https://www.popsci.com/california-coffee-cancer-warning to fully appreciate just how idiotic the morons who run this state can be. Note that the name of ...
by John Hasler
Fri Apr 05, 2019 7:14 pm
Forum: Lathes
Topic: Wacking the Morse taper out of the spindle
Replies: 6
Views: 340

Re: Wacking the Morse taper out of the spindle

Oiling an MT taper won't make it release any more easily unless you reduce the drawbar force. What it does do is increase the compression exerted on the tool or part held in the collet by allowing the collet to pull in very slightly farther. I've never seen a drawn-in MT taper rotate in the socket. ...
by John Hasler
Thu Apr 04, 2019 1:52 pm
Forum: General Discussion
Topic: essential tools for milling
Replies: 20
Views: 777

Re: essential tools for milling

Also remember that it is not always necessary or even desireable to use a vise at all. A lot of work is better clamped directly to the table.
by John Hasler
Wed Apr 03, 2019 10:38 pm
Forum: General Discussion
Topic: essential tools for milling
Replies: 20
Views: 777

Re: essential tools for milling

In addition to v-blocks, parallels and 123 blocks you will find a large collection of miscellaneous shims, blocks, and wedges quite handy. These are easily accumulated by not being too quick to toss small drops and cutoffs into the scrap bin.