Shortcomings on my design:
You might as well build a steel frame for the cutting table to sit on. I only had 1" to work with and thicker tubing would be better. Like maybe 1 1/2" x 1".
The gantry is only held down by gravity. So linear bearings that held the gantry down would be better.
Use 5/16 or 3/8" bolts to bolt to the Black pipe.
80 oz. motors are just barely strong enough. I find that I can stall an axis fairly easily.
Use shielded cable to wire your motors and switches. I found that my Porter Cable Trimmer put out alot of RFI and caused the steppers to noticably jump when I turned it on.
Have Fun,
Chris |