I've been using the Workbee 1010 for about 2 years to manufacture a multi-piece wooden instrument stand out of various woods and over the past year I've notice the quality of my cuts has slowly diminished. I have calibrated several times in various ways and it has now gotten so bad that can no longer make a quality part and am at a loss for a fix. The cuts vary from .5mm to 1mm off in various directions. The parts are supposed to mate exactly and now there is about 1 to 2 mm of slop between the parts. The cuts even vary from one week to the next. I've had to calibrate almost every day and now even with calibration the parts are not to the dimensions designed in CAD. Can anyone please give me some pointers on what to check. To calibrate I've used a Stepper-Calibration worksheet that I downloaded where I design a 50mm x 50mm square and made a cut then made adjustments to the X and Y axis per the Stepper-Calibration instructions. Once I achieve an exact cut of 50mm x 50mm I cut my product and they are not to spec. I've used Estlcam 11 and Vcarve to generate the gcode and both are the same results. I used generic GCODE generation. My CNC Controller is the original ProX board. What else should I be checking?
Calibration is more of a once-off thing. If its losing accuracy over time, something mechanical is loosening over time. May be time for a partial stripdown to recheck, retighten and readjust everything, making sure everything is still square and perfect along the way.
