Wednesday, November 13, 2013

Update for Heated Printbed users (and standard CubeX print platform)

If you are using the GRM Heated Printbed on your CubeX, there are two recommended changes you can easily do. (#1 can be applied to the standard printbed also)

1.  Regarding the z-sensor relocation kit:
I applied some extra drops of 5 min epoxy glue onto the side of the magnet and where it mounts to, to secure it better and prevent any movements.
I also put a zip-tie around the new z-sensor clip and the rail where it mounts onto, to also secure it better in place and prevent any sensor movements.
With the magnet and sensor securely in place, I very rarely have to re-adjust the z-gap. I have not for quite awhile. I don't even check it anymore.
I home the printer, heat up the printbed, make sure the filament is loaded, then "Home" again, select the printfile and print.

2.  Applies to standard and heated printbed:
After you leveled your printbed, add a M5 nut (non locking nut) to the bottom of each right and left leveling adjustment screws and tighten it against the mount. This will tighten the adjustment screw into the mount and make it more stable. I did not really have an issue with the printbed platform moving, but I noticed that I can rock it a little bit when pushed against it, so tightening the will prevent the screw to wiggle/move in the threaded mount.
Make sure to use a standard non locking M5 nut so when you tighten the nut it does not turn the adjustment screw and affect your leveling adjustment.

The standard CubeX print platform comes with a locknut, but the locknut might turn your adjustment screw when tightening the nut, so it is easier to use just a regular nut.
3.  Adjusting the printbed heater cycle time.  The initial default heater cycle time is quite long and can cause the printbed height to vary slightly due to the temperature change cycle. This can result into slightly uneven print layers which looks like "ribbing" on the printed part.
This is easily corrected by increasing the heater cycle time.
If you just very recently bought a heated printbed, the default might be already corrected to "3".
Here is how to adjust the heater cycle time:
  • Turn on the heater.
  • Push and hold the "Set" button till the display changes.
  • Then push the "Set" button again several times slowly (it cycles thru the different settings).
  • Cycle thru till the display shows "t 20". (That is the cycle time set to 20).
  • Select the down button to change it to 3.
  • It will save the new setting automatically and return to the normal display after 10 seconds not pushing any buttons.

  • NOTE: Do not change the cycle time lower than "3". With this setting the print layers come out even and a lower setting would just put more unnecessary cycle time on the relay.
    Also no need to adjust or tinker with any other settings on the heater controller.


    1 comment:

    Note: Only a member of this blog may post a comment.