Search found 251 matches

by choprboy
Thu Nov 28, 2019 5:29 pm
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: FS: Assorted micrometers
Replies: 2
Views: 331

Re: FS: Assorted micrometers

2) Starrett #231 0-1" .0001" micrometer - SOLD
by choprboy
Wed Nov 27, 2019 3:08 pm
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: FS: Assorted micrometers
Replies: 2
Views: 331

Re: FS: Assorted micrometers

6) Mitutoyo 2-3" .0001" micrometer - SOLD
by choprboy
Sat Nov 23, 2019 10:47 pm
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: FS: 8" D1-6 3-jaw chuck
Replies: 0
Views: 237

FS: 8" D1-6 3-jaw chuck

I bought this to use for a welding chuck, but it was always far too nice for that and I never got around to building the positioner. Too much stuff and need to clean out the shop... Poland made model PUUm-S8D6ZD - 8" 3-jaw chuck with a D1-6 6-pin camlock mount. Reversible/replaceable jaws, about 2-1...
by choprboy
Sat Nov 23, 2019 10:34 pm
Forum: Buy, Sell, Trade, Wanted, Free!
Topic: FS: Assorted micrometers
Replies: 2
Views: 331

FS: Assorted micrometers

Too much stuff and trying to clean up the shop... 1) Starrett #230 0-1" ,001" micrometer - $25 Ratcheting thumb screw, a bit dirty but works fine. 2) Starrett #231 0-1" .0001" micrometer - $25 ****SOLD**** Ratcheting thumb screw, a bit dirty but works fine 3) Starrett #436 2-3" .001" micrometer - $3...
by choprboy
Fri Nov 22, 2019 1:19 pm
Forum: Lathes
Topic: 5C collet chuck
Replies: 3
Views: 316

Re: 5C collet chuck

I think you want to search for a "plain back 5c chuck". A bunch of different manufacturers make the; Bison, TMX, etc., also the cheaper China versions. There is also a cheap round cylinder 5c chuck (I have one) that can be held in a standard 3/4 jaw chuck. Examples: https://www.kbctools.com/itemdeta...
by choprboy
Sun Nov 10, 2019 6:35 pm
Forum: General Discussion
Topic: Smearing On Cutter Block After Using Evapo-Rust
Replies: 13
Views: 1216

Re: Smearing On Cutter Block After Using Evapo-Rust

Rust removers generally convert "rust", Fe2O3, into other softer/dissolvable (usually black) iron oxides, iron sulfate, and iron phosphates. Those may leave a staining on the surface, but should hopefully should come off with more clean rust remover, a light acid (though that may cause an immediate ...
by choprboy
Tue Oct 29, 2019 1:12 am
Forum: General Discussion
Topic: Flap Wheel Grit for Good Finish?
Replies: 3
Views: 1038

Re: Flap Wheel Grit for Good Finish?

I use them all the time; 36, 60, and 120 grit. Infact, unless I am bulk grinding off large chunks of metal, I use them almost exclusively and find them much easy to control grind depth and finish compared to a hard disc. When brand new they will cut aggressively, but pretty quickly wear off a bit an...
by choprboy
Fri Oct 25, 2019 4:19 pm
Forum: General Discussion
Topic: phosphor bronze or beryllium copper
Replies: 6
Views: 1367

Re: phosphor bronze or beryllium copper

They come up on Ebay and other surplus sites from time to time, but they bring a premium and damaged/unservicable units seem to be a problem (early handheld versions were pretty fragile, stationary units were quite big and the x-ray emitters/detectors worn out by the time they were retired). For the...
by choprboy
Fri Oct 25, 2019 1:40 pm
Forum: General Discussion
Topic: phosphor bronze or beryllium copper
Replies: 6
Views: 1367

Re: phosphor bronze or beryllium copper

X-Ray Fluorescence or X-ray Resonance Fluorescence. It shoots a beam of X-rays at the material and measures the emitted x-rays/light spectrum to determine the elemental composition. There are also versions that use electron beams and laser pulses to accomplish the same thing.
by choprboy
Sat Oct 19, 2019 9:57 pm
Forum: General Discussion
Topic: Splicing Romex?
Replies: 40
Views: 8609

Re: Splicing Romex?

And, where run through joists, the holes must be 2 or more inches away from the edge. This is so any nails driven into the joist won't penetrate the wire. It is a minimum of 1-1/4" from the edge (NEC 300.4A), if closer it is allowed but a nail plate must be used to prevent nails/screws from penetra...
by choprboy
Sat Oct 19, 2019 6:29 pm
Forum: General Discussion
Topic: Rotary shaft seal with concentric tolerance?
Replies: 17
Views: 2290

Re: Rotary shaft seal with concentric tolerance?

Weird. I can't think of a modern seal that would work off hand. Could the housing originally have had a rope seal (possibly with a hard grease ring like John suggested)? That would deform to fit the shaft and take up an offset. ...Edit... Re-reading, maybe I'm misunderstanding, this has 0.7mm of sta...
by choprboy
Thu Oct 17, 2019 10:26 pm
Forum: General Discussion
Topic: Anyone know where I can find this roller?
Replies: 11
Views: 1497

Re: Anyone know where I can find this roller?

Looks like an insert out of a sliding door wheelset (most are v-groove, but some glass/cabinet/shower door are flat like this one). Possibly you took it out of a larger assembly from a local hardware store? I'm found similar, but not that exact one yet.