123/2 blocks

[mklotz]

123 blocks are very useful devices, both for setups and also for simplifying measurements as I showed here...

http://www.homemadetools.net/forum/m...g-tapers-55135

Much of what I do is on a smaller scale, though, so 123 blocks are a bit oversized many times. I decided to make a half-scale set of blocks with dimensions 1/2 - 2/2 - 3/2 or, in simpler nomenclature, 123/2 blocks.

They're not NASA-grade precision but, even so, they've proven to be very handy indeed. I use them by themselves and also in conjunction with their full-size "parents" on those rare occasions where a larger setup is needed.

I haven't drilled and tapped them yet. I had planned to wait until a need for holes arose and, so far, it hasn't so they remain blank.

[Shelly142]

Marv,

Great idea, especially the measurement of tapers. The simple approach is always the best.

Shelly

[DIYer]

Thanks mklotz! We've added your Half Scale 123 Blocks to our Measuring and Marking category,
as well as to your builder page: mklotz's Homemade Tools. Your receipt:

Half Scale 123 Blocks by mklotz

tags: measurement

[user name blacksmith]

Thanks Marve; I have been machining for a long time, and have never seen this process explained so simply. This shows that you are never to old to learn!!!

[carl blum]

Hi Gang: I find the 123 blocks that you can screw together and form angle plates, etc, the most useful.

ARC Euro Trade had some 1-2-4 cm blocks for metric folks and also 2-4-8 blocks. Handy for smaller work.
Carl.