Mar 19, 2021 · 1-2-3 blocks requires creativity because they can be used in many ways. Here's your introduction to 1-2-3 blocks.

Nov 17, 2005 · Higher end 1-2-3 blocks are better utilized as gaging and inspection tools to preserve their accuracy. The cheapos, however, are so convenient for set-up and general …

Jun 21, 2013 · My blocks are so called "ultra-precision" 1-2-3 blocks, a search throws up what looks to be the same or similar blocks from various vendors. The holes are 5/16 with 5 tapped …

Jun 28, 2007 · I have a feeling that I am missing something with 123 blocks. What are the various uses around your shop?

Sep 12, 2004 · There are literally hundreds of uses for 1-2-3 blocks. Say you are setting up a part on an angle plate. You know that the part clamped to the plate is square vertically, but you …

Apr 1, 2002 · This may be a really dumb question, but why do some 1-2-3 blocks have threaded holes?

WTF? Yes, most Western metrology companies make/made single-hole 1-2-3 blocks, including Starrett. Obviously we are talking about the 1-2-3 blocks with 11 or 23 holes, where the …

Dec 16, 2009 · You can flame harden 4140 to the high 50s in rockwell c. In my opinion a through hardened 1-2-3 block is undesirable, first is the risk of cracks through stress risers (all those …

Jul 23, 2009 · A friend gave me 8 1-2-3 blocks that had heavy rust on them, not everywhere, but bad enough. I sand blasted them and then was able to pick 6 that would grind to usable …

Ever since the discussion of John Stevensons 10-20-40 metric blocks that can be attached to one another, I keep encountering situations where I would like to do that with my 1-2-3 blocks. Just …