(28/364) 2023-01-16_14-58-07.jpg
Fixing my micrometer that I dropped . Reminder - never drop instruments!
27: Truing up a grinding cup using the tapered arbor I made.
26: Material shelf needs to be reoganized.
25: This worked much better
24: This did not work well - ended up chipping the disk
23: AC4 diamond powder (Venev diamonds) - grain size from 2500 to 40 microns.-- 80-100um or 140-170grit
22: 2023-01-13_13-26-22.jpg
21: 2023-01-13_13-01-55.jpg
20: 2023-01-12_20-03-01.jpg
19: Replaced with some copper wire. Needed to dissasemble to regrind the seat that holds the tap.
18: Starrett 91 Single sided pin - very hard to remove
29: They don't use sink hangers anymore. They apply silicone caulk/glue and then twist the wires to clamp it into place.
30: Before restoration - A Herman Schmidt/Murkens style Suface-plate-indicator-stand.
31: 2023-01-18_00-52-40.jpeg
32: Lapping block to brighten it up. Groved iron plate with polycarbonate sheet - 20um diamond paste.
33: Had to weld this Stainless back together..
34: A good ground clamp
35: Trying aluminum foil on groved plate. Does not wear long - too thin.
36: Only 23um [.0009"\
37: lapped down to 2.5um
38: Finished printing the ER40 collet holders.
