Wow, this has been an exciting experience.
started in 1999 when I wanted a machine to automate
the drilling process of the PCB's for the various
electronic projects I was making. After some brief
research I jumped in, head first and after a couple of
months I had what can be seen in the photo below.
machine used old ballbearing drawer slides, acme-screws
with bronze nuts, and a Dremel as the spindle. I looked
for some fairly priced stepperdrives for a long time but
eventually decided to build my own based on the L297-298
combo. Looking back on the whole project the drives was
probably the best part of the whole machine.
If interested you can
the schematics etc for that driver.
Here's a shot of an
engraving I did with the machine. The 'artwork' were
made with CorelDraw and the machine was run by a program
called Stepster which I believe was one of the very few
available PC-CNC programs at the time. (Excluding EMC
machine did what I first wanted it do but by the time I
was finished with it I had come up with so much stuff I
wanted to do with it that I immedatly knew I wanted
another one. Besides that - I love building stuff. So
with a bit more knowledge of what CNC is and
recent (at that time) access
to some decent machinery I started the design and
manufacturing of this baby.
Yet a few
years down the road I stumbled across an Abene VHF-3
that was previosuly converted to CNC but was now lacking
the control. You can read more about that adventure