Solidoodle 4 Lawsy X Carriage Mod

thingiverse

This is a modification to Lawsy's X carriage top that enables the use of the stock SD4 extruder, hot end, and default X end stop switch location. Why on earth would I do such a thing? Two reasons. One, because someone asked about it on the unofficial Solidoodle forum. Two, because I can't afford another E3D hot end this paycheck and still wanted to go full-bearings on a second SD4 I've managed to acquire. The end result loses a few millimeters off of X although it's still above 190 which is a miracle on the SD4. The design only works for later design Solidoodle 4 printers whose extruder has two holes facing downward toward the hot end not the earlier design where the screws aren't immediately visible. I want to highlight that this design will work perfectly well for early revision SD4 users but you'll need to use 12/16mm long M3 screws even cap screws fit in there don't worry! to attach the extruder bracket to the carriage. Due to how the early revision SD4s work the hot end will sit about 10-15mm further out than normal so be sure to print it correctly with your settings adjusted for that change. You can use my modified version and still enjoy all the same features as Lawsy's original design. Instructions: Printing is straightforward just like with Lawsy's standard X carriage top. The X carriage bottom pieces fit in the same way no surprises at all but you'll have a fun time with the X end stop switch wiring when it comes to assembling the extruder onto the carriage which works perfectly fine. Note that if you're using the original end stop switch bolts your X movement might grind and stick if you're at Y=0 because they're hitting the bed so don't use them for best results. To build a full X carriage you'll need the two other carriage pieces from Lawsy's original design specifically new_carriage_centre_rear_2.stl and new_carriage_centre_front_2.stl. His instructions are clear and show how everything should come together with ease