Quote:
Originally Posted by mrerick
The pins are hardened, are brittle and tend to snap / fracture. I had it happen a couple of times before replacing a pin with an oversized one.
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Mark,
If they are brittle, then they are not hardened and drawn correctly.
There is a difference between "hard" and too hard(=brittle).
More likely what we are seeing is stress cracking emanating from a flaw or inclusion in the original material.
Rick,
I gave the drawing dimensions and tolerances in my post above.
The toggle train is designed with some "looseness", but not a lot.
Sandromxp,
If the pin was received "broken" in the replacement toggle, I'd send the whole thing back; and start over.