Hi all, Am new here, started a new job recently and have only been CNCing for 3-4 months so have rookie knowledge. However, I have been using the Workbee V2.1 for all this time and there have been a few problems along the way but none like this one. I was probing my work 0 using a touch probe which seemed to work until I hit go to work XYZ zero. The machine at that point went straight down into the bed and clipped the material along the way I then hit the E stop. I tried to home the axis after removing the material from the bed and the Z home is nowhere near where it usually is when homing it. As I did not have any input in setting this machine up myself I am at a dead end, every time I press home Z it seems to come lower and lower so am scared to press anymore times. Any help would be appreciated, Thank you in advance! Ciaran
Duet controller. Check the wiring to your Z homing switch, especially where it comes through the hole in the X gantry plate. Alex.
Yes you were right! Thank you so much for replying so quickly, turns out one of the wires had completely frayed and melted away. My colleague and I have since fixed the issue. Sorry for the late reply. Will defo use this forum again thank you very much have a good weekend! Ciaran
@Ciaran Burns you would be amazed how often that comes up. Think about relocating the Z homing switch to the side of the Z C-beam and actuating it with a bracket mounted on the X gantry plate. Alex.
Hi again Alex, Thank for the help last week it was great! I have just had a look at your speed and feeds graph and was wondering if the data for each material is the same for each size of bit? Also had a question about stepover, I have always had mine at 40% have read in other places that it should be lowered but yeah not really sure. Ciaran
That speeds and feeds table was created by the people at Carbide - I just did the metric conversion. It is for a 1/4"/6.35mm bit, but they don't even specify how many flutes. It's only a rough guide to get you started - with wood in particular each piece will be slightly different. Stepover depends on what you are doing - 40% would be fine for roughing - at the other extreme, if you were using a tapered ball nose bit for fine detail 8~10% would be more appropriate. Alex.
