SpudFiles

Without it, making my combustion would've been impossible. This is by far the best invention for power tools. I bought it just for the sole purpose of building my gun but now i can use it for anything. Great investment.

I have built most of my guns without the use of a dremel.
But they are useful tools indeed.
My favorite part is buying all of the accessories:)

I'll need a dremel for the breech loading on the next launcher I'm designing, spose a hack saw, jig saw and file could do a just as good job. But much more labourious.

hells yes. Iv had mine forever and I use it all the time. currently im using it on my aluminum knuckles

Getting them to run balanced can sometimes be tricky. The keyless chucks kinda suck, but thats the only complaints i really have about them. Well one more, there only good on small scale stuff, otherwise it takes to long to get the work done. I've got a ton of things for mine over the years.

what kind of stuff do you use your dremel for then?

Basicly cleaning in tight places, sometimes i port cylinder heads along with intake manifolds. Cutting in tight places, notice the theme -- tight/small places. If it weren't for the incredibly high speed, they would only be good for soft work.

I use a Dremel for removing the "step" inside certain fittings that prevent pipe from sliding completely through.

Other than that, I don't use it for much. But I can see one coming handy for a lot of other things.