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IIRC, I read in some "long ago and faraway" thread that some folks would put a dab of hot lead on the base of the pins (perhaps after the sprue has solidified?) to keep the pins hot. Seems to have worked for them... I haven't tried it yet, though. Just a thought.
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Anyone try WD40? It seems to work on nearly everything!
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Coat the pins lightly with dielectric silicon grease. Works for me. Gp
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I polished my pins and graphited them and took another run at this mold yesterday. Preheated the mold on a hotplate. I set the PID at 750 the first few had terrible fill out, but dropped right off the pins, I cast for a while, but kept getting wrinkled bullets. I ran the pot all the way up to 800, but still wrinkled bullets, and no frosting, I did get some flashing, tho. It seemed like the faster/hotter I cast, the worse they stuck. I then tried turning the pot down to 700 but still kept getting wrinkled bullets, but less sticking. I'll cull tonight, but I dont expect to find many, if any, perfect bullets. I might be hard pressed to find many useable ones.
is it possible that hotter = sticky pins?
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It’s been all deaths ,births and marriages ‘round hear, so I haven’t had time to wrestle with the beast for a while.
But when I get wrinklies and I’m good and hot and should fill out but don’t.
I pour a little pure alcohol in the mold and let it bubble and spit for a bit then tip the rest out.
Seems to get rid of the oil residue etc which usually helps.
Works for me.
Ohhh!
Don’t blame me if you tip the boiling vaporising spirit into a fire or hot molten lead.