Geeeetech Kossel Mini

[tony woollacott]

Hi everyone,
I recently bought this little delta printer, and have now finished building it. I have done the calibration and will more than likely need to do it again once I have let it settle in.
I need some help, please with the start and end scripts. I am using Simplify 3d, and have got a profile from the support team, but it does not work. The axes look like they are confused, and trying to print the part sideways. I have partial success using the Kossel Mini profile in the directory, but when starting the print, the nozzle sits on the table while all the heating up takes place, which burns a small hole in the build plate, it then goes to the home position and starts the print cycle. Once the print is complete the machine goes to the home position, but then switches the motors off, so the nozzle drops down onto the finished print.
I hope this all makes sense. I have attached the gcode of a simple test 10mm x 10mm square.
If anyone can help me I would be most grateful.
Thanks in advance,
Tony

[CompoundCarl]

It looks like it starts heating right at the beginning, so it's only going to be sitting on the plate if that's where you left the nozzle. Typically, a delta printer moves back up to the top after each print, so I would think it would actually start heating at the top where you left it after last time. But anyways, if you want it to move to the home position before heating, then change your starting script to this:

G28 ; home all axes
M190 S[bed0_temperature]
M109 S[extruder0_temperature] T0

If you don't want it to turn off the motors at the end, then just remove the following line from your ending script

M84 ; disable motors

[robkruss]

Its seems to be very common in Geeetech printers that the firmware has the axis directions mixed up. If you check in the user guide, you'll see info about loading the Arduino dev kit and recompiling the firmware with different motor settings. You may need to reverse the direction of one or more stepper motors there. You might also try going into the GCODE setting for your profile and changing the "Flip build table axis. I think that might do the same thing.

[tony woollacott]

Thanks. I will give that a try.