Head to Wal-Mart, pick up a breakfast griddle for $25. Bring it in the shop, set it to 250°, lay the mold open on it and do your pours. Once the pours are in, remove the mold, close, clamp and shoot the belly color. Good bye cold cracks.
Please use the proper safety equipment! Once the baits have cooled enough to remove toss them and the runner/spruce into cold water(away from any liquid plastic). This will keep them from denting/causing defects while curing.
#CBBDARMY @CustomBaitsByDrew