Few Christmas and eBay additions:
Bought another 4-set Sears sanding block set from eBay seller stm_surplus. There are rubber and have nails embedded to hold the paper in place. Much nicer than my typical scrap block of wood cut to size, $18 including shipping.
Picked up this lot of Nicholson files off eBay for about $30 including shipping
Christmas gift from my wife. Think she's giving me a hint to get out of the habit of wiping the files on my pants to clean them. . .
Another Christmas present from my better half. I have a steel screw checker, but you have to thread the screw/bolts into a hole to check the thread size. These side-load plastic ones should go quicker.
I think I've cut one left-hand thread ever. Saw these LH threading tools on eBay and picked up a pair for my Grizzly and Clausing lathes ($12 shipped each). They came with 16IRA60 inserts. Off the top of my head here, so consider the source, but the 16 is the size, "I" is internal, "R" is right hand thread, and the "A60" is (I think) 8-48 tpi.
I was curious about the inserts as it seems to me that there should be some side relief at the tip of the insert. Direction would be different for LH vs. RH threads as the helix angle is opposite relative to straight up and down. Well, set both a LH and RH tool on a plate with a square and I don't see a difference. The side relief could be done on the casting of the insert, or on the surface on the tool holder where the insert screws down. Looks to me like both the LH and RH Chinese tool holders I have are pretty much dead straight up and down. I set the LH and RH tool holders next to each other and they look parallel. Curious why there's no side relief . . .
Was getting low on QCTP tool holders so picked up 6 more from CDCOtools
Our local Tractor Supply store had a clearance on 1/4" air hose quick connects. Didn't need a dozen of them for $1 each, but . . .
Went on a measuring tool buying spree. Now I can measure how poorly I'm hitting my targets! Picked up a Chinese 0-6" digital depth micrometer. I have an NSK 0-4" or 0-6" set too, impulse buy for $40 off eBay (including shipping).
Picked up a couple of tumbler style Mitutoyo micrometers: Tubing and 60 deg. V. Paid around $50 for the pair.
Also get a Mitutoyo uni-mike. Both the blade and pin anvils are there, $40.
Lastly, a Mitutoyo 0-1" groove micrometer. Impulse buy as I don't do a lot of internal grooving jobs, but it was a good deal at $85 shipped.
Bruce