QU-BD TwoUp Limit Switch Holders

thingiverse

Update 8/12/15: I have replaced the Y-End and Y-Bumper files, making some minor adjustments as I finally got around to printing them. The holders for the SainSmart Mechanical Endstop are designed with separate parts for the X and Z axes, which work together, while the Y Axis is independent. Although I haven't printed the Y Axis holder yet, the X and Z axes have functioned correctly so far. The screw holes are undersized to facilitate drilling and tapping for a #6 Screw; you can use any screw with a tap die. The X axis shares screws that hold the Z Screw nut in place. The X-bumper features an alignment peg that is likely longer than necessary and may require cutting or sanding after printing. I glued the bumper in place (the peg broke when it was hit by a tool), but secured the Z-Axis using motor mount screws, even though the OEM screws were too short - they have been replaced with longer ones. The Y-axis will be aligned using open peg holes on your base and secured by a zip-tie channel. The Y-Bumper clips onto the bed and is fastened in place by a zip-tie. Endstop holders use three pegs to secure electronic boards, where two are designed as snug fits while one is deliberately undersized for alignment support. I drew inspiration from smerrett79's X axis bracket, but have since made significant changes to the design. You shouldn't need any supports if printed in the right orientation, as the mounting holes for screws are clearance holes and the ones for switch activation screws are pilot holes.