lubing mold top surface

Canuck2018

New Member
I use a permatex product for lubin ceramic disc brakes.
I apply it with a q-tip.
Seems to work well especally on alunmiun molds.

Has anyone else tried this?

GR
 

Glaciers

Alaska Land of the Midnight Sun
I have about half a dozen NEI molds from Walt made back in the 80’s and he would include a small bottle of liquid graphite with. I’ve used it but, I normally use a rag saturated with 2 cycle oil and lightly smear the plate and mold top when hot. The graphite I’ve used seems to work as well. But I like the 2 cycle oil.
 

RBHarter

West Central AR
I discolor the bottom face of the plate with tip residue on my thumb before I start and lube the screw with whatever Al Nelson puts in the box for lube , I'd guess Pennzoil green 2 stroke and the blue/purple Valvoline 2 stroke oil both synthetic I presume .

Whatever it is it works in either color , far better than the mess I made early on . I was young and stupid then I'm older now . ;)
 

Matt

Active Member
2 stroke oil synthetic or not. Apply with Qtip and scrub nearly off. Doesn’t take much I close my molds with my hand and can tell when re-application is need. Use it on top of steel, brass, and aluminum molds.

Use non copper based anti seize for aluminum mold sprue plate screw and locator pins or locator “bars” on older Lee molds.
 

Jeff H

NW Ohio
I've always managed to get too much, regardless of how, or how little I apply, when using synthetic 2-cycle, so I went back to "coloring" the bottom of the sprue plate with a soap-stone - the ones welders use to mark metal. You CANNOT get too much of THAT on there, so I am always safe. I put nothing on the top of the mould blocks themselves. Pins/holes get a light Q-Tip swab of 2-stroke once in a while.
 

popper

Well-Known Member
My sprue plates after casting about 7# of 145gr. @2pencil coated. Drop of 2 stroke on the pivit whenever the plate doesn't swing freely. Re-scribble the plate to remove the 'swipe' when done. No mess, no smoke and no residue.
sprueplate.jpg
Mould shows the residue when using 2 stroke stuff on the pins and plate.
mould.jpg
That residue builds up and is almost impossible to remove.