Levelling the Print Bed

If your prints are sticking too well to the print bed, or if the first layer has very low adhesion and look stringy, or if the first layer appears to be uneven, you may need to level your print bed.

Due to the use of a kinematically coupled print plate in SAAM 3D printers, you should not typically need to level your print plate during regular use. Before levelling your print bed, ensure that the print plate is resting on the three mount posts fully. Each ball-tip post should be nested in the center of its respective slot in the print plate.

If you do need to level the print bed, follow the instructions in this video or the numbered instructions below.

Level Bed Movie from Cincinnati Incorporated on Vimeo.

  1. In CI Octoprint, go to the Control tab and click Disable Motors.

  2. Click the home button under the Z controls.

  3. Check the Z height between nozzle and bed at 4 touchpoints: the three kinematic couplers and the central wingnut. Distance between nozzle and bed should be 0.003" or 0.076mm at each point. You can check using a piece of paper or the appropriate feeler gauge. The height is correct when your paper/gauge just begins to drag.

  4. If adjustment is needed, remove the central wingnut underneath the Z carriage by hand. Use a 17mm wrench to loosen the three nuts fixing the kinematic coupling in place. Use a 6mm allen wrench to make adjustments to the height of each coupling post. The adjustment posts and associated nuts are circled in red below:

Resized_20190606_153426

  1. Do not consider the bed level until you check all 4 touchpoints consecutively without making any adjustments. Click the home button under the Z controls after each adjustment made.

  2. Depending on how much you need to adjust a bed, you can opt to re-calibrate the blade height afterward.