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

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 holes tapped …

Feb 14, 2006 · 1-2-3 blocks are precision instruments, like micrometers. You don't use a micrometer as a C clamp, and you don't use 1-2-3 blocks as workpiece supports (although you can ). Good blocks …

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 need to get one …

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 shop use I can see …

Aug 30, 2006 · 1-2-3 blocks are precision made square and parallel machine and inspection accessories used as parallels, quick and dirty fixturing, machine set up, you name it. A set of four 1-2-3 blocks is …

Dec 16, 2009 · I did my V-blocks out of A-10, they get used on a daily basis, 30 years later.. One tip on the 1-2-3 blocks, if they are the style with 1/2 inch holes, through, make the holes at least .516, so …

Feb 3, 2011 · Interesting perspective on 1-2-3 blocks in this thread in Antiques... "Over here, the tools stay mostly inside the plants and are sorted out when the plants introduce new technology or new …

Aug 30, 2006 · 1-2-3 blocks are precision made square and parallel machine and inspection accessories used as parallels, quick and dirty fixturing, machine set up, you name it. A set of four 1-2-3 blocks is …

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