I have used and uses a step-four mill for manufacturing Guitars (
www.jens-h.dk)
It was beginning to be to little and slow for my needs, and there was also some issues in stability.
I desided to build my own, designed to my needs.
Data:
X=1050mm;Y=450mm;z=150mm (can handle the outline of a guitar.)
Ball guides and ball spindels.
Feed > 5000 mm/min.
Servo motors for loops feadback (I have destroyed som guitarbodys because of losing steps) nema23 DCservo.
Here is some pictures.
The construction drawing
I have run the machine with the motors, and the axis work well up to 7000mm/min. They are very strong. I have some problems with the limits switch, but the disapear when I change cable to screened cable.
Know I only have to do the final alignments, and get to know the software.