Fixing x-axis offset

hi!
im haveing some trouble with my x axis offset.
when i print big prints it prints outside the glas.

anyone know how to fix this?

Yes, you need to play around a bit with different X coordinates and with setting the axis limits via M208. Ideally the nozzle should be at X=0 when it's at the corner of your glass plate. Also check the bed size in your slicer, it shouldn't be bigger than the glass actually is.

If you're using RRP's official firmware, you may also need to remove the "G92 X0" lines from homeall.g and homex.g after you've added the right M208 parameters to your config file.

The slicing application that produced the G-file needs to have the same coordinate system as the Ormerod. You can choose any system you like so long as you set both the slicing software and the Ormerod to be the same. Usually we use positive coordinates only - i.e. the corner of the glass is coordinate 0,0 so all points on the glass are positive. Some people prefer to set the center of the bed at point 0,0 and have both positive and negative coordinates (there are some advantages to doing that). To set accurate positive coordinates you can do the following:

1) Set the bed size in the slicing software. You can use a size of 200mm X 200mm (the Ormerod can actually print slightly bigger than that).
2) Halve each dimension to find the center - in this case 100,100
3) After homing the X & Y axis, position the nozzle over the exact center of the glass using the move buttons on Pronterface or the web interface.
4) Send the command "G92 X100 Y100" (or whatever the center point is if you have set a different bed size in the slicing software).

Your print will now be perfectly centered on the bed. To set it automatically, find the difference between the position of 100,100 after homing and the position that is reported after you have moved the nozzle to the real bed center, and alter the X and Y home positions (as set in the homing files) by that amount. Then check that after homing the command "G1 X100 Y100" moves the nozzle to the exact center of the bed.

Dave