kv

Well I also have doubts about heating it so long, 4 hours sounds to much, maybe 30minutes or so...

mr.stijntje have look here > http://en.wikipedia.org/wiki/Dextrine

I have a theory, that 1/3 of the jar would be filled with media, 1/3 with chems, so when the chems fall in the empty spaces between the marbles, it leaves something, roughly 1/2 empty. There will be lots of free space where the marbles can grind the stuff....

My jar is ~1.8l voluminous.

Thanks Blaf! :)

Hello to all!

I was wondering where to look for this stuff, in what sort of shops it could be found?
Or, a proper way to make it?

I was also thinking about making the jar similar, but I found a different way.

It is 24cm long and 10,5cm inner diameter.
One end cap is glued to the pipe.




But I have a question, how much of the jars volume should be filled with grinding media and how much free space must be left?

vochtig-damp, humid, moist

But what are the positive things of wet-milling, isn't dry-milling better, or you are thinking about saftey?

In which milling proces smaller particles can be made, damp or dry?

Well, it's so easy to convert centimeters into feet, that I don't bother looking for a SI standard formula.

CS=76.63/ sqrt of (C/30.48 )
where C=centimeters

1foot=30.48cm

That could be very annoying.

And I think that wet-milling is less effective, because the balls stick to each other and don't crush the meal as good as it is done in dry-milling.

I searched in the net about ball mills and I found that usualy the speed of the barrel is 65-80% of the critical speed.
Here is the formula tu calculate the CS:

Hope someone will find this useful...

Finaly,after searching in several shops, I have found glass marbles.
Because of the upgrade on my ball mill I didn't have the opportunity to try them in, so I'm curious about the efficiency of them...

So that means that there is no need to wetten the BP, if using non sparkling media?
I think steel media made sparks differ from those made by static electricity, so you mustn't use steel for BP milling.

Blaf, can you tell me more about your marbles, where did you get them and what size are you using?

I didn't want to start a new topic so I'll ask in this one:

Has anyone of you guys made colored smoke?

I recently made a ball mill, now I must find a proper jar.
Is PVC ok for the job, isn't there a threat of static electicity?

And another question, can BP be ball milled (of course with lead media), wouldn't it ignite when the lead balls crush it?

OK, thanks.
By the way, nice casings! :)

Could anyone tell me how are these (KNO3 50g+sugar50g+paraffin30g) smoke bombs made, simply putting KNO3+sugar in melted paraffin, or there is more dificult precedure to make those things?

Sorry for my english... :oops: