Printrbot X-axis sag compensation

thingiverse

**update Dec 30, 2015 - Made them a bit wider so that they could withstand more abuse and keep the bed in place longer. Print four of these with flexible filament (I've used ninjaflex) and put them between the print bed and the printer's frame. I based this on a forum post where someone used spring/locking washers to do the same thing, but I couldn't find the link again. It seems to work well so far, and it's easy to make the design beefier or print replacements if needed. Check out Misc notes for tips on getting a level print bed. Print Settings: Printer Brand: Printrbot Printer: Simple Black Rafts: No Supports: No Resolution: .2mm Infill: 100% Notes: Printed on printrbot Simple makers kit 1405 I used this ninjaflex guide I made to prevent the ninjaflex from getting tangled up when printing: http://www.thingiverse.com/thing:1159884. Try setting your print speeds to 15mm/s under all settings. HOW TO LEVEL YOUR PRINTER After you install your rubber compensators, manually level your printbed (assuming you have an autolevel probe). I'm assuming you've set up the autolevel probe so it won't drive into your printbed and damage it. Method 1: Using G-code Home your printer (X, Y, & Z). Type G29 in your gcode editor - read the points shown in the log and adjust the screws on your printrbot to get them equal. Note that the last number is sometimes shown twice in Repetier. If your printrbot only takes three points, you can home your Y-axis and type G30 in your Gcode editor to get a fourth point. Method 2: Manual adjustments (if you're not happy with the results) 1: Home your printer's X and Y axes. 2: Turn your Z-axis by hand until the LED lights up on the autolevel probe. 3: Tighten or loosen the corner screw as needed. 4: Keep repeating this process until your bed is level.