Hey all, New here. Purchased and built the Lead 1010. Great machine, fun to put together. Did a surfacing job on the spoiler board today. Having the following issue when i start a job: 1. Execute Job 2. As the job initiates, the z-axis trips the limit switch. For some reason, every job the machine toggles up before it goes down. Each time it goes up it trips the limit switch and alarms go off. And then on the X and Y axis on the side where i dont have limit switches, the machine/settings seem to be unaware of what the "limit" should be. I used the OpenBuild Lead 1010 default settings. Am i able to track the machine manually to where i feel the furthest from 0,0,0 it should be and set those settings? I cant seem to find it. Thanks all!
So I had the same problem when I first got my Franken cnc machine running. And before I got the XYZ Probe, when I would zero to the part I would jog the Z axis about 10 to 20mm above the Zero. In the Openbuilds control software I would "Set Pre-defined Position (G28.1)" . After that the machine would run the job from that position and after job complete would return back to the G28.1 position. Not for sure if this is correct procedure but it worked for me. Now since I have gotten the XYZ Probe after it zero's to the part it automatic returns to position over the Probe plate and starts and stops from there.
What CAM are you using that uses G28 instead of the more usual G53 initial safe move (fusion) or just straight G1/2/3 (almost everything else) as that is definitely an exception to the rule. G28/28.1 is a user definable parking position (typically used for toolchange macros etc)
Fusion360-Grbl/Grbl and in the property list in the Post Process page the green colored letters there is a "Safe Retracts" its just says G28 So I think that's why. Well I see it also has the option for "G53" and "Clearance Height". I have never clicked on the pull down list to try to change it to tell you the truth I had thought G28 was the only option. So all this Grbl stuff is witchcraft to me once I got that machine going I didn't stray to far off the path for fear of mucking something up. And technically that is the reason why I would park the tool higher with G28 is to be able to get to the end mill too change it then re zero and hit run. So if I change the Safe Retratcs in F360 post process would that change the G28 to G53 in Openbuilds Control? ChrisPfaff Sorry for miss guiding you and high jacking your thread!
The OB version of the Fusion grbl post takes care of that and other issues. docs:software:fusion360 [OpenBuilds Documentation]
Well I actually learned something today and it stuck. I asked the same question a while ago and it didn't stick. And the Info on Grbl wiki is not easy to read for me so I have to bumble thru. My problem was with F360 not knowing everything about its cam settings and still learning.
Steep learning curve for sure! The list of settings on the GRBL wiki is going to take some time to sink in! Happy building!
There are a handful of grbl fusion posts out there. Some are machine specific or rather controller specific. Ooznest is one of them. The OB one is not.
