Quote:
Originally Posted by A930Rocket
How fast can you make the rounds? Once poured, what’s the cooling period where you can remove them and repour the molds?
|
I use two molds at a time during a casting session. The way it works out, timing-wise, is just about perfect as I alternate the molds.
Starting from where I have both molds full, it goes like this: I pick one one up, knock its sprue plate open with a plastic dead blow hammer, open the mold to drop its two bullets on the towel (the photo shows the molds sitting on this towel), close it up and re-fill it, set it down, put its bullets in the cardboard tray, pick up the other mold and repeat. Alternating like this, I can keep the molds hot enough to produce good bullets without overheating them. If you cut the sprues too soon, when they are too hot, they will streak the top of the mold and make a real mess.
The quantity shown in the photo, about 150 each of two different bullets, represents about three hours of casting.
Here is a good photo of an open bullet mold, with the sprue plate swung open. When closed, the sprue plate holes are over the cavities in the mold. The cavities are filled until overflowing, leaving a puddle on top of the sprue plate. Hitting the tab on the sprue plate swings it open, cutting the sprues, and leaving a nice flat base on the bullet. Opening the mold then drops the bullets out of it.
