One method I've seen mentioned on the forums is to submerge the parts in powdered plastic (e.g. small flakes of ABS) and vibrate the whole container. If your parts aren't fragile, you could probably get the same effect by putting the powder + parts into a drum and use a motor to rotate the drum.by chad_oliver - New Zealand RepRap User Group
I don't have a reprap (I'm still debating whether I can afford one) but I'd love to be involved anyway. Perhaps the university might be a good location? I bet if you talked to the engineering department they'd be happy to give you access to a room, or even the Machines Lab. Chad Oliverby chad_oliver - New Zealand RepRap User Group