Discussion in 'Blackpowder' started by Sburk1993, Jan 19, 2022.
What would be a better choice then so I don't mess up my powder?
How long do you mill for? I have seen seen people say 2 or 3 up to 16.
Hardened lead balls (1/2 to 1 inch) are the overall best / safest for milling black powder according to this info:
Thanks for the info
I was thinking about brass because I know it won't spark. I also thought about marbles since it's glass but I've read some people say they can spark in some people say they can't.
Thanks for the sources of media.
I built mine it's not the best but it's a start. I seen to many bad reviews for the HF mill.
Did you determine the critical speed rpm of your drum and set an appropriate milling rpm based on that? If not, you could be wasting your time. I know you don't have the HF mill, but for example (and as in the link I posted earlier), the critical speed of a HF drum is 133 rpm. That's when centrifugal force keeps the balls stuck to the edge of the inner surface of the drum, and no milling will happen. 50% to 70% of critical speed is pretty much where to be. So, at 60 rpm (factory set) the HF mill is only running about 45% of critical speed. It should be running about 80 to 90 rpm to be optimal. That is why so many people run their mills for a long time to get a fine grind when it should only take a couple of hours. I'm guilty of that as well. Several years ago I wrapped duct tape on the spinning shaft in the right places and my mill speed ran about 73 rpm which is 55% of critical speed. The tape worked but it's tedious to apply and measure, and it loses shape over time. I think I can do better with plastic tubing as per the link I posted.
After reading about people doing this to make media it hit me that .45 caliber FMJ bullets were pretty much the same thing. Since I reload for my modern guns I already had those on hand, and that's what I've been using with good results. I run my unmodified HF tumbler for 8 hours using ingredients that are already in powder form.
I did actually just test my mill. it's rotating at 41 rpm. It is slow but my motor is a veriable speed drill at only 1/2 trigger pull. I'm still in the development stage you could say. It's pretty much functional. I need to put some shields on it to cover up the motor in case of spillage so nothing has the chance to ignite. I could turn it up some more. And I'm sure I will when it comes time.
I think I'm going to order from sky lighter for my ingredients in powder form. I don't reload but that's sounds like a good media for a mill. I'd really like to use marbles but I keep hearing too many conflicting stories on if they spark or not someone suggested nickels and that don't sound too bad.
Marbles are very light weight compared to anything metal, and especially lead. I'd be afraid that marbles would increase milling time quite a bit. They may tend to "float" in the media rather than mill. ? I'm not sure how they could spark. ?
True I didn't think of there weight I'll just use lead for now I guess
That is awesome and very safe I like it
Separate names with a comma.