I end up doing alot of multi-color painted heads and not too long ago started using powder to create one or two color eyes. Had gone through alot of problems where the paint would sag or slip on the head, due to gravity, once the paint would start to 'flow' and it got up to temp.
Nipples off the top of the heads where my first problems when i was hanging heads from a rack. Built me an upright holder ( sorta like post #9 in this thread: Curing Powder Paint ) to keep the heads pointing up throughout the cure. That kept the nips from forming on the top of the head, but still had problems with paint sagging if i put on too many colors or just too much paint. Two color powder eyes pretty much would always sag too.
Solution: Put the jigs in an upright holder.... same oven temp ......but rotate the entire holder inside the oven, by a quarter turn, every few minutes. I go by the on/off click of the thermostat in the oven. When it 'clicks' at its high temp, open the door and quickly turn the holder using needle nose pliers. Pay attention, a minute or two later, it will click when the oven element turns back on to get it back up to heat. Keep listening till it clicks again when it is at top heat..... open the door and turn another quarter turn. Just turn it a quarter turn for every on/off cycle of the heat element.
Simple solution, it just takes some watching over the oven during the cure. My little oven also has a rotisserie feature - if i could figure out a way to use that along with the jig holder am betting i'd never have a saggy head ever again.
Nipples off the top of the heads where my first problems when i was hanging heads from a rack. Built me an upright holder ( sorta like post #9 in this thread: Curing Powder Paint ) to keep the heads pointing up throughout the cure. That kept the nips from forming on the top of the head, but still had problems with paint sagging if i put on too many colors or just too much paint. Two color powder eyes pretty much would always sag too.
Solution: Put the jigs in an upright holder.... same oven temp ......but rotate the entire holder inside the oven, by a quarter turn, every few minutes. I go by the on/off click of the thermostat in the oven. When it 'clicks' at its high temp, open the door and quickly turn the holder using needle nose pliers. Pay attention, a minute or two later, it will click when the oven element turns back on to get it back up to heat. Keep listening till it clicks again when it is at top heat..... open the door and turn another quarter turn. Just turn it a quarter turn for every on/off cycle of the heat element.
Simple solution, it just takes some watching over the oven during the cure. My little oven also has a rotisserie feature - if i could figure out a way to use that along with the jig holder am betting i'd never have a saggy head ever again.
