Bullet mold for plug belly weights.

[falkners]

Sorry but I just ran across this post. Here's one I made out of aluminum that enables you to get the exact length you need without cutting. Weights are consistent. This is a tailweight mold. The slugs are actually from a similar bellyweight mold without the core rods so you get the idea. Capping the cavities with a relatively small feed hole results in a very small sprue that is easily trimmed with a pair of nippers. I pour with a small bottom pour furnace. I prefer to press my slugs into my plugs and file off the excess which is minimal. That way I don't have to mess with wood fillers. I get a consistent weight on each batch of plugs this way. You could probably use a blank Do-it mold and cap it like I did with my homemade.

[Mr. Sandman]

Nice work on that mold...

[NIB]

If you have ANY do it mold you should have enough room in it to bore some holes for belly weights.
As you pour jigs or weights or whatever you also can do belly weights at the same time.