100 million rpm is just too fast!!!

I have a single-speed Dremel connected to a Dremel speed controller. With this I can manually dial in the speed from 0 up to the max. of the tool. I don.t remember the price of the controller but it should't be to hard to find.

Same here, Lenny. Find a speed controller, usually a store that carries Dremel can get one if they don't normally stock it. Or maybe one of the newer Dremel that has variable speed built in.

Bob

Lenny,
Dremel has a speed controller(#221) for single speed moto-tools. It will bring the speed from 0 rpm to whatever the max rpm is. It is a foot pedal design and is somewhere around $45.00US

My controller doesn't have the footpedal control, just a knob that you turn to change the speed. I think this version is a little cheaper.

Or you just control the voltage output if you have a variable transformer.
My tool work at 12V, but if i set it to 9,6,3,even 1,5 it will operate at different speeds. I bought the transformer for about 4$.

Hey LFirth;
what I've done for my Dremel is get a 2 outlet wall box, a varible light switch and a single std 3 pronge outlet, and a extension cord, and wired up an veriable adapter for the Dremel,
just cut the receptical off the extension cord thus leaving the male plug with the wire, then take the poled wire to the white side of the receptical and the none ploed wire to the black terminal on the light switch the have a jumper wire to go from the white terminal of the switch to the black terminal of the receptical then run the wire throught the box and mount the switch & receptical to the box and you could put a cover on the box to cover the faces of the sw & recpt. and wella you got yourself an inexpensive adapter that costed about $10.00 and work very well and you used your little ole hands to help your hobby along instead of paying over $30.00 for basically the same thing
Ugly Butt Deadly Effective Hawgs
cuda

YES IT IS.....
i joked on the calculation
100million/min around 1670000 rev /sec
axial speed at the edge of 1inch collet = 2*(pi)*R*radial speed
that amounts to almost 325 Mach.

Well, I use a variable speed dremel, but another tool that I find useful for tight corners and fine detail is a flexible shaft chucked into my variable speed hand drill. The drill is clamped to the end of the bench and set to run at whatever speed I want, and the flex shaft chucks into the drill. The end of the shaft fits in my hand and has a set of collets similar to the dremel. I often find it easier just to handle the shaft (much like a dentist handles their drill, it is the same sort of set up). I got my flex shaft from Lee Valley but I have seen them at large hardware and home depot type stores as well.

Also if you like the Dentist drill noise then you too could own one, but the down fall is that they are pricy, from about $200.00 to $1k a piece, and they will run off your airbrush compressor too they only need 35psi to run at max rpms, and the bits are expensive too but you could do some ausome carving work with it though
Ugly Butt Deadly Effective Hawgs
Cuda