Ideas for a Rotocasting Motor?

Skaught

Skaught

Sr Member
I've been thinking about ways to build a contraption that will help me rotocast my IG-88 heads. Right now I do them all by hand and it kicks my butt rotating the mold under one arm. I have to put on old coveralls since a little resin will leak out the seam at first (sucks when the sun is out) and I end up with bruises along my forearm.

To properly cast the piece, I have to rotate in two directions, rolling it under my arm while tilting it front to back. The idea I have if for a motor that will do the rotating while I just hold onto the end and raise it up and down. I'm sure I can build the framework simply enough, but I'm wondering what motor I could use to do the rotating. Could I hack an existing appliance of some kind? Short of a clothes dryer motor, I hope. But something like that that will rotate, and be riggable so I can lift the mold end up and down.

Thoughts?

Scott
 
Of the mold? I don't have any, but it's about 30" long and 12" in diameter. I mainly need ideas for the motor. I thought about a power drill (corded), but I'm not sure if that has enough torque. It probably does, though.

Scott
 
If you'r going to be standing there anyway does it even need a motor? Just make the frame and rig it to a table. You could probably hack a bicycle if you want to introduce a gear ratio.
 
I need to roatet it as well and raise it up and down. I suppose I could hand spin it if I built a frame for it, but the less I have to do the better. I don't think I could crank something that rotated it and raise it up and down at the same time very easily. The less sweat, the better.

Scott
 
Actually, you could mount the mold on a dowel and attach a bike chain and pedal to it with a hinge at the end. Then you could crank the pedal while you lift it up and down with your other hand.
 
Skaught said:
Hey -- I HAVE a rotisserie motor for a grill I no longer have. VERY interesting!

Scott
Click to expand...

I think you should defiantly go that rout. If you can get a three foot mold together, you shouldn't have much trouble with a roto-caster. Be careful not to use the same gear ratio on both axises. You don't want the same point facing up at the end of each turn. Watch a few of the videos on you tube and pay close attention to the center frame after each turn and you will see what I mean.
 
Hit yardsales and look for a still working treadmill on the cheap or kid's battery powered hotwheel type cars they can ride in. Treadmill would be ideal as it it would have a variable speed control built in, plenty of torque, and be wall plug in..... the hotwheel kid cars you may have to gear their motors down some and find a battery charger.
 
franz bolo said:
How long does the resin take to kick? You might get a way with a hand turned device. It can free up your arms and you would just have to turn a big wheel or handle.

Here's a good example: http://www.youtube.com/watch?v=yryklUwvsQc

FB
Click to expand...


5 Minutes. I'm already going to be tilting it up and down, so the resin goes from the top to the bottom of the mold, so a motor to handle the rotation would be nice. It's a long mold, so to build a machine that will handle rotating it in both direction would result in a pretty big device.

Scott
 
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