Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, JanRwl@A... wrote:
>Hassle!  But no motor-brushes,sparks, "buzz",  etc.

I was meaning to mention that I wasn't looking forward to the 
recommended speed change thing.:(

With the press on low speed like it's been, and the belt-cover top 
flipped open, it puts off a mild soothing "rumble", which is great for 
that tedious million hole stuff. I can't imagine sitting in front of 
my B&D router for that. I'm not even sure about that length of "Dremel 
time" now that I think about it.

I found three raw 120VAC motors here, but they're gigantic. They're 
also a lot slower. I use one in a drum spinning thing I made. Is the 
thing you're talking about small enough to mount directly in a 
travelling carriage? Is it noisy, and does it take a chuck attachment 
directly?

Good point also on the pivot to bit distance and it's "skew" factor.

Not to change the subject, but I was also wondering how bad it is to 
sink the bits further up in a chuck to shorten the amount of 
unsupported bit material? I fear that jaws gripping the spiralled part 
of it is not good. Like everyone's saying though, we really only need 
a little more than the board thickness.

                    -George