Newbie- Dremel 300 for CNC

[arispal]

Hey guys!!! I need you professional advice regarding desktop CNC. I already have the Dremel 300 and my question is: Is it possible to use this in CNC and I need to cut aluminum RC parts. Where can I buy the bits?


Thank you.



Aris

[tskguy]

Aris,

I highly suggest you do some searches on here regarding cnc machines. The dremal 300 may the worst option for a cnc spindle unless you only plan on cutting balsa wood or foam. Metal is for sure out of the question. You are posting in the DIY wood router section. Take a look in the general metal working machine section you will see what you need in order to successfully cut parts out of metal.

Good Luck!!!

[jkarisny]

Take it from me, I have the Dremel 100 on my drawer slide machine and wouldn't recommend it. The run-out is quite bad and even running it through harder wood bogs it down. Pretty sure all the bearings are gonna be the same.

Save your pennies and get a good spindle. Bosch Colt seems to be a good entry level one, not sure if it'll do aluminum, but I'm sure someone can chime in on that one.

[Ron Dunn]

I burned out two of them in rapid succession. The last was replaced by a Proxxon LB/E which has proven to have minimal runout and quieter operation.

I wouldn't recommend the Dremel at all. If you do light work (I do model-sized woodwork) I'd recommend the Proxxon, otherwise I think a heavier duty router might suit you better.

[arispal]

Thank you guys for you advices. I appreciate it. I'll do some searcher regarding CNC.




Aris

[CarveOne]

A lot of the "run-out" when running is due to a drop-in fit of the bearings into the plastic housing, and the amount of flexing of the plastic housing when using a Dremel in a rigid metal mount. You don't notice the vibrations so much when you are holding the Dremel in your hand. You can feel it, but your hand absorbs a lot of it. Putting it on a CNC machine with a rigid mount makes all of the vibrations concentrate at the router bit in the form of bad cuts. The cutter will wobble around trying to move away in all directions from any mechanical resistance that it meets.

You can have a theoretically perfectly balanced armature, chuck, and cutter assembly and you will still see this effect when cutting aluminum.

Find an aluminum body trim router on sale like the Dewalt DW611 (or similar) and use that instead. You'll get much better results.

CarveOne