pic: Ultimate chain tool project

[Chris is me]

Originally Posted by RoboChair

7075 machines like a dream. Honestly I would say it machines much better than 6061, pity that it's so expensive.

I think the concern isn't with the difficulty of cutting the material, but with the strength of the threads tapped into the block. If these strip, a helicoil is the logical next step.

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I'm excited to see the development of not only an improved 25 chain break, but a 35 chain equivalent. Do you think instead of milling square protrusions, you could just press roll pins into the block to constrain the chain? This makes manufacturing much easier for you, and it avoids causing overconstraint by limiting the points of contact with the chain.