Re: [CAD_CAM_EDM_DRO] PCB Routing - Dremel

Dremel tools have ball bearings on the shaft which will withstand axial
loads.

For machining PCBs, you shouldn't have to worry about axial loads.
Machining PCBs is much less load than Ol' Joe sharpening his lawnmower
blade.

If you can handle the tool before buying it, check for side-to-side
play, as well as up-and-down play in the spindle. You will probably
find the Dremel tools are excellent in this regard. If you're
considering a Chinese import, however, I would check this carefully.

One other note, the Moto-tool with the digital speed control sounds
like it has feedback to maintain a certain speed, but if you read the
manual, it says the speed will vary with the incoming voltage.

What kind of bits are you using to cut the traces? I recently broke my
0.010" end mill (it still works for PCBs though :-)) and am looking for
a replacement. I'm considering a 1/8" 60 deg cone shaped single flute
carbide bit, and wondering if it will work.

FYI, www.mscdirect.com has the aforementioned bit, as well as PCB
drills with 1/8" shanks.

Regards,
JJ

On Tuesday, Feb 10, 2004, at 04:51 US/Eastern, Peter Cruickshank wrote:

> Hi;
>
> I recall seeing some threads regarding the choice of Dremel drill
> for PCB routing, something about one (or more) of the models has
> thrust bearing which would prolong it's life if you use it as a high
> speed Router Spindle on a Sherline Mill - any ideas ???
>
> Didn't someone design a adaptor to attach a dremel to the sherline Z
> axis ??
>
> Any help greatfully appreciated.
>
> CrankShaft.
>
>
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