It all depends on what you're trying to accomplish with your rotary tool.  I've never used a Proxxon, but from the specs, it looks like they have the same problem that Dremels do...they run way too fast for use on plastic.  Pretty much any bit, blade, or sanding/polishing implement you put on it is going to melt or burn things.  I have a fairly decent Dremel, but I only use that for the "stone axe" part of a major modification.  It gets the big pieces of plastic cut close to where I want things, and then I follow up with either an xacto knife or a jewelers saw for the finishing work.  For the insides of tubes, such as a jet intake, where I want to fill and sand seams, I use the same DeWalt cordless drill that I use every day at work.  You can make that run nice and slow, and chuck just about anything you want to into it.  I have even chucked a needle file into it to do the rough filing.  For the final sanding, I took a bunch of micromesh sheets and cut strips that I glued helically around hardwood dowels.  I can just chuck the dowel up in the drill and sand and polish the insides of intakes with that to get them nice and smooth.

DowBuzbee

I am looking to buy a better rotary tool for my bench

 

Hello!

I'm using FBS240 like this:

I've bought it because I can plug it directly into the wall outlet and it has a chuck that holds tools up to about 3,2 mm. That means I can use thin drill bits comfortably AND I can chuck a piece of sprue and then use this machine as a primitive lathe - which is what I use it for the most, as it seems. It's lowest RPMs are 5000 which you can use for drilling small holes in styrene. Many times instead of fixing the drill bit in the chuck I chuck to be drilled (barrels, exhaust pipes, rotor head parts) and hold a drill bit in a holder. This trick allows me to drill very nice straight center holes in many objects. So yes, it is a useful, well made tool, but it would be a lot better if it could rotate more slowly. It would also be very cool to be able to chuck slightly bigger diameters, too (like up to under 5 mm).

Hope this helps, have a nice day

Paweł

Thanks for all the great info guys, I really appreciate it. I read somewhere that Plasmo was able to modify his Proxxon to run at a slower speed. Does anyone have any idea how to do that?

DowBuzbee

I am looking to buy a better rotary tool for my bench, I currently have a cheap Dremmel that I am not a fan of. I am leaning towards a Proxxon, but I can't find a good set of bits that are designed for plastic. Any help would be much appreciated

 

See my reply to the Rotary tools thread above. Love my proxxon.  

Low speed magic.

I would stay away from rotary tools unless you realllly need one I have several high end ones but I would not use one around plastic. You didn't explain how you would use it. 

check this see if it will help

Tamiya 74042 Craft Tools - Electric Handy Router