Tim

If sinkers cost too much then i found out today that our school manual arts store room has lots of brass rods. I am in an extention class because im good and we get to use whatever we want from there. So i'll design something that need brass rod and ill keep some and saw it down. I'm not 100% sure its brass rod.....but its gold coloured and im pretty sure copper is brownish.

But sinkers from crazy clarks would be like $1 for a pack of 8. And ive got a 3 inch OD jar. Hopefully wont be too much.

I finished the ball mill

It spins at a great speed when its empty and ungripped but i might put a layer of cloth tape over the jar. My jar is pvc and the fan is just a precaution incase it does leak but i will mainly use it to cool down the motor.

All up i spent about $32AU not including the epoxy and tape costs. I spent most of the money on the cabinet wheels ($4 each) and pvc end plugs ($5 each). The Steel shaft was a bit dear too at $7. The rest i got from the shed.

The thing looks like s**t but i dont care as long as it works.

But alas i still have to buy the media......I'm just going to get sinkers from crazy clarks. Hopefully wont cost TOO much to fill an 80mm ID tube.

And those suicide things kinda spook me. I just cant ever imagine being in a situation where u'd want to die....

Tim

They have a cage full of tested electrical epquipment and the untested stuff is just by its self. But your not allowed to plug anything in in case its faulty. I was disappointeed when i took it home as it didnt work.....i Pulled it apart and oil the thing and spun it a bit and now its fine.

I'm now in the later stages of building it. I just need to secure the bracings and buy the cabinet wheels. Then i suppose i will need to put one of the other fans next to it to cool it down and also blow any leaking powder away which will save me the time of making a guard.

The other end of the shaft is not secoured to anything it just sits in a little thing to hold it up.

If it makes the jar jump alot how would i fix that??? Just buy a large bearing?

Tim

I'm currently buliding a ball mill from a pedestal fan motor. Except i just took apart a full pedestal fan i got from the dump for $3 AU.

Sadly i was unable to get pulleys and belts so now it has to me a direct drive. I will see if not adding grip to the rollers or jar will alow for enough slip so that the jar turns at a slower speed.

Basic design..... I used cloth tape and wound it around the motor shaft until the galvanised steel pole would fit snuggly over it and then put a little bit of epoxy over the tape before sliding the pole over it. I used rather wide tape so it makes the pole as parallel as possible.

The Epoxy is drying right now so i will then need to construct the box to hold it and then go buy cabinet wheels as the secondary roller

I'm probably wrong but....littlejohnny your from australia arn't you??

Everywhere on rec.pyro recommends washing machine motors and i'm guessing they are reffering to top load machines.

In the UK however the frontload is more popular. I have a front load washer and it sounds like a jet engine and goes really fast....But our old top load washer was a hell of a lot slower.

So if your motor is from a front load....Its too fast but if it's from the usual australian topload it should be ok if that is what is usually recommended.