Sovol SV06 Plus x-axis carriers and extruder carriage

prusaprinters

Edit: improved the carriage and carriage cover models slightly. Some of the injection-molded ABS parts of my Sovol SV06 Plus were damaged in a z-homing failure. The parts did not break, but they were slightly deformed with significant x-axis wobble. The extruder carriage took the most damage among the ABS parts. The trapezoid-shaped TR8x4 POM nut on the tensioner-side lead screw was also severely damaged. I searched high and low and could not locate trapezoid TR8x4 POM nuts for sale from any US-based seller. The x-axis carriers in this set have been modified to use readily-available round TR8x4 POM nuts (same size as Prusa Mk3 POM nuts). I designed these replacement parts with three goals in mind:Tighter grip on the extruder carriage linear bearings for reduced x-axis wobbleUse easily-sourced round TR8x4 POM nutsOptimize for 3D printing on hobbyist printers (FFF)Use standardized captive nuts instead of heat-set insertsThrough-holes to measure the penetration depth of the x-axis linear rodsMaximum strengthI took measurements from the STEP files on Sovol's SV06 Plus GitHub page. The models there were made for injection molding. My slicer gave alerts about potential problems printing Sovol's models. My models have as much flat surface on all sides as possible in order to allow choice in selecting a face to sit against the print bed. That is why they are so boxy. All edges have a slight chamfer to mitigate elephant's foot. You will need round POM nuts, seveal M3 nuts, and a handful of M3 screws of varying lengths. I did not make an inventory of the screws I used. The parts use horizontal slots for captive nuts. I suggest that you insert M3 nuts in the slots, use a long M3 machine screws to draw the nuts into their “caves” and then remove the screws. Some of the captive nut slots are inside the vertical bores for the lead screw and the z-axis bearings. The thin slots cut into the extruder carriage are for optional hose clamps to hold the bearings in place. I ended up not using them because the design of the carriage cover acts as a clamp when the screws are in place. I know these x-axis carriages will not work on a “standard” SV06. The standard SV06 uses smaller linear rods for the z-axis (8mm vs 10mm on the Plus). The extruder carriage might work on a regular SV06, but I have not tested this. I suggest printing with extra top and bottom layers and more walls than normal. You will probably need to print with supports. As of today I have put the printer back together but I have not yet used the printer. I printed the initial set of parts with PLA+ on a Bambu Labs P1P but I expect that I will have to re-print them using a more heat-tolerant filament in the future. Your printer will probably have to be dialed in pretty well to get a good fit on the x-axis linear rods. Edit: revised extruder carriage cover.