After about 3 months of work, my second machine is getting closer to done
. A little history of what happened is in order: This spring we had rain almost every day for a month and a half. I live in a old farm house with a field stone foundation and no drain tiles. When the ground got saturated, I got water flowing through my basement, which is where my cnc machine is located. I had never bothered to seal the mdf on my machine, so it sagged all over. At first I was going to just rebuild it, but then I realized that I did not need such a big machine to do the parts that I wanted to do, so I went with a new, smaller design. I used as much as I could from my first machine.
Features:
20 x 13 x 6 cutting area
Fixed bridge - moving table design
The bridge axis and the z axis are made up of 3/4" drill rod with oilite bushings.
The moving table is made up of 1" drill rod (fully supported) with skate bearings. I used steel to make up the moving table. Hopefully there should be no flex.
1/2-10 ACME rod for the lead screws with home-made anti-backlash nuts made of Delrin
I used pull down window shades for way covers
To be done:
Limit switches and home switches
A mount for the router
A way to hold down parts. I will probably add another piece of mdf to the table surface and router slots for the aluminum track that I used on my first machine.
jgro