Homebrew PCBs

Some might also be interested in this, although not proven yet.

To speed up my CNC drilling I am experimenting with this item I got 
from ebay.

http://photos.groups.yahoo.com/group/homebrew_pcbs/lst?&.dir=/Spiyda


or if that doesn't work,  in the Spiydafolder in the photos section

item ... slide

It is a small pneumatic slide with two cylinders inside.. It both 
takes care of the parallel movement and the actuation. 
I also got some 24 Volt pneamatic valves from the same guy that I 
have had Mach3 switching on and off.

It should not only be faster than the x axis movement but will also 
reduce the wear as i didn't take the same care with the z as i did 
with the x and y.

Just a case of finding the time to do it !

It was a cheap way to get a small movement axis  at $29 shipped to 
me!

Chris



--- In Homebrew_PCBs@yahoogroups.com, "soffee83" <soffee83@y...> 
wrote:
>
> --- In Homebrew_PCBs@yahoogroups.com, "adicont2" <adicont2@y...> 
> wrote:
> > Take a look here for a simple schematic:
> > http://tinypic.com/view/?pic=ilfuh1
> 
> I still think the additional "upper rail support" might be needed 
to 
> keep the whole thing vertical and steady, and I like the idea of 
> fatter posts for those too, so having the posts protrude up 
through 
> the carriage pipes might be a necessity. The whole thing could be 
> short enough that you could just slice a couple sections out of 
the 
> larger tube. The small tube would only have to be tall enough to 
> handle a PCB plus the bit and Dremel nose section. The Dremel 
itself 
> could extend up past the whole rig, and you could just stack 
plywood/
> hardboard "shim" plates to get the table height from the base for 
> different bit lengths. 
> 
> I just mailed someone who might have car stuff laying around. If 
she 
> has something good, I may try it over the next few days. I'm not 
> really familiar with shock parts, but if that large (1"?) outer 
tube 
> I've seen has a tight fit to the smaller one on the main visible 
body, 
> it would be perfect (and thanks again for the suggestion).
> 
> -George
>