My second attempt to make that dog clutch, is to make it from a proper
diameter 12L14 round bar.
It seems to work a little better, this being a round bar already means
less machining, I fixed some bugs, redid the feedrate math, etc and so
far it seems to be working. There is 50 minutes machining time left.
The purpose of this is to make an adaptor to connect my servo motor
with a work gear box, to the knee.
Anyway, this 12L14 is the most amazing rusting machine imaginable, the
chips made 2 hours ago are already rusting despite the coolant.
How do I make the finished product -- a 6 inch long 12L14 bar --
somewhat rust protected?
Right now, I think that I need to simply dry it, and cover with
"marine grease" inside or where any surfaces mate, and something oily,
but cleaner, outside.
Any other ideas?
I've had reasonably good results from blackening 12L14 by boiling it
in sodium thiosulphate (phototographers' "hypo") and rubbing on a
little LPS3. It's protected a knurled adjusting screw on my sawmill
that I turn with sweaty hands.
Toss some zinc on that puppy, eh? Hmm, except for the working groove.
That will take a lot of wear and I don't think zinc will bear up.
Maybe go have it chromed in an existing chroming lot if anyone in your
area still does that.
Or call Caswell Plating and ask which of their kits would be best for
The more passions and desires one has,
the more ways one has of being happy.
Oops missed that one first time around.
Cheapest finish I know of is heat it to 400 or so then drop into a bucket of
used motor oil or similar.
More properly, one would use beeswax turpentine and linseed and call it a