Hello all and thanks for any help. I have a self built cnc router. I had limit switches installed, but my solder joints broke on two. So, I am planning to get some limit switches from open build to install on the machine. In the meantime. I am using fusion 360 for designing. I need to know how to set safe retracts in fusion if my machine doesn't have limit switches. I have tried to change in post process to "clearance height" but at the start of the design the machine goes straight from my 0 point to where it is going to strart cutting without going up any at all.... Is there a way to have Z go up a certain amount when it travels (again I don't have limit switches installed). Thanks!
So, if I am understanding to correct... If I jog over to the position I want set as "machine home" and turn the black box off then back on the blackbox will think this is my "machine home" position until I turn it off and back on again..... Now, if I want it to remember this "machine home" position, I should add the macro code discussed in the link you provided. This will allow the black box to remember the "machine home" position that I have set? Am I understanding it correctly? After doing this, when I choose post process in fusion, I should use the open build grbl? Will this use g28 or g53?
Basically yes, except remember your USB cable is also providing power. The reset button might be easier than off/on (as you have to unplug USB to remove its power) BlackBox doesnt care or remember anything. If you park the machine there (by macro, or manual moves) it just means the step above is done without having to remember to do it G53. G28 is user configurable (but is just an offset, from G53, so if G53 is wrong, so is G28, G30, G92, G54-59, all the offset coordinate systems are based of where G53 is - you either have to rehome to rely on them, or reset them anyway) Watch this video to learn about coordinate systems and offsets
You also had to Home each time ... faking the home, or homing, same principle - not just power out, also - after an abort - after an alarm - after a reset - after a physical crash where you lost position
Ok, and I assume you don't have to do this once limit switches are installed because the machine will travel until the limit switches tell it it has arrived at "home"?
