Bent sprue plate

[kbstenberg]

I have a MP 6 cavity mold that the sprue plate warped on me. I straitened it once but it re-warped after putting it back on the mold. Can someone give me advice on fixing this one. Or do I need to make a new one?
Kevin

[MtGun44]

No offense, but the plate is very unlikely to warp by itself. You need to think hard about
what you are doing that might be warping it. Not impossible that it is somehow warping
with heat, but I think we are talking about a technique issue here.

My first thought is that you are waiting WAY too long to cut the sprues, which would make
them too hard and may warp it. They should cut very easily. Also, if you are not preheating
the mold on a hot plate, you need to cast with ONE cavity for a while, then TWO cavities,
closest to the pivot point, so max leverage, until the mold temp is good enough that you
are not cutting cold, hard alloy with the sprue plate.

Bill