Lapping
Videos
Lapping is a machining process in which two surfaces are rubbed together with an abrasive between them, by hand movement or using a machine.
Small lapping plate made of cast iron
Small lapping machine
Logitech lapping machine and retention jig
Optical flats in a wooden case
Gauge block
Videos
Gauge blocks are a system for producing precision lengths. The individual gauge block is a metal or ceramic block that has been precision ground and lapped to a specific thickness. Gauge blocks come i
Lapping
…Surfaces this flat can be molecularly bonded (optically contacted) by bringing them together under the right conditions. (This is not the same as the wringing effect of Johansson blocks, although it is similar). A piece of lead may be used as the lap, charged with emery, and used to cut a piece of hardened…
Metric gauge block set, 112 pcs
Another set with 8 pcs, 125 mm - 500 mm
Trolley model
36 Johansson gauge blocks wrung together easily support their own weight.