Anybody made a roundball mold?

[Carbon 6]

I wonder how they kept the mold from melting or the ball fusing with the mold?

Smoking the mold keeps it from fusing and the mass of the mold acts like a giant heat sink.
You wouldn't be able to cast with speed but it should work nicely. Hard part would be finding a proper sized marble these days. I lost all my marbles years ago.

 

[RobertBradley]

Smoking the mold keeps it from fusing and the mass of the mold acts like a giant heat sink.
You wouldn't be able to cast with speed but it should work nicely. Hard part would be finding a proper sized marble these days. I lost all my marbles years ago.

You’d have to find a proper sized ball bearing. You could press the bearing into aluminum to make the cavity, but I’d remove material first to make the final press easier and keep distortion of the block to a minimum. May need an hydraulic press to get the required pressure.

 

[Carbon 6]

You’d have to find a proper sized ball bearing. You could press the bearing into aluminum to make the cavity, but I’d remove material first to make the final press easier and keep distortion of the block to a minimum. May need an hydraulic press to get the required pressure.

Again, the problem would be finding the proper sized bearing.

 

[RobertBradley]

Again, the problem would be finding the proper sized bearing.

You could have a machinist turn a solid steel ball, but with a CNC machine you could just as easily turn the round cavity

 

[Carbon 6]

You could have a machinist turn a solid steel ball, but with a CNC machine you could just as easily turn the round cavity

Or he could make a period style cherry cutter.

 

[rrebuck]

It seems that making a mold from your ball using something not requiring precise tooling would be highly desirable, so do they ever make bullet molds from plaster paris, cement, of something similar?

 

[1950DAVE]

Still listening, gettin ideas. Thanks.
Dave

 

[Carbon 6]

Still listening, gettin ideas. Thanks.
Dave

Wood, clay, silicone etc. even old fashion sand will work for larger diameters It's just a mold.

 

[JCKelly]

Should I need an odd-size round ball mold I would consider:

Round ball molds Archives ~ MP-molds

And just think of all the $$$$€€€€ I saved not buying a computerditgialcontrolled whatsit

 

[1950DAVE]

Now why would I want to buy a mold when I have made a lock from scratch, bored out an old .22 barrel to.27, reamed it, threaded it, made a breech plug, drum and nipple, front and rear sights, trigger and stock with buttplate. I'm not looking for someone to do this for me I'm looking for alternative ways I might approach this and be somewhat assured of success. Thanks again.
Dave

 

[Chief Ten Beers]

Not having the proper tools or knowledge to make a roundball mold, I bought the molds I have.

 

[Carbon 6]

 

[RobertBradley]

It seems that making a mold from your ball using something not requiring precise tooling would be highly desirable, so do they ever make bullet molds from plaster paris, cement, of something similar?

I think all of those materials would be too porous.