Accuracy and Precision of the BAXEDM test machine
I wanted to share a small experiment I did on accuracy and precision of my DIY machine. First, let me refresh your memory and show what the difference is between accuracy and precision. This picture says it all:
Please also note that the effective CAM wire diameters mentioned above are only valid for the Generator setting mentioned above. If the settings differ, the diameters will be different. It is therefore advised to first machine a small test piece if you are using different settings.
Very interesting test Mike, probably the kerf is smaller than the wire, due to the low speed in the wire, you use the same wire speed in all test?
Could you repeat the steel test with the same parameters but with more wire speed? to see if the kerf increased and to see if the measure change
I also think that increasing the wire speed will indeed affect this. I was cutting all materials at the same speed. I only use the wire once, so if I increase speed, I increase cutting costs. I think the wire speed should be as low as possible without breaking the wire, to get the most value out of it.
At this moment, I do not have a wire speed monitoring system. I used to have it, but it broke and I've got no time to fix it. Way to busy with all the generators 😀 I now simply set the speed manually, and keep it the same for all materials. When I use a high current, I increase it a bit, but I'm not sure by how much. I need to add an encoder idler wheel to measure it.