Quick fit carriage system

thingiverse

It seems like you've provided a detailed guide for assembling and customizing a 3D printer, specifically focusing on wiring and connector placement. Here's a reorganized version of your text with added headings for better readability: **Wiring Carefully** Careful with the wire layout: The wires on the opposite connector are mirrored. Keep a clear head. Triple check the layout of the wires! Also check for undesired short circuits between the wires! You could kill your board, motor or sensor. **SUB-D Connector in General** Ensure that both opposite connectors are fixated at the same height (M3 holes have some play). If you wish, you can even keep the connector on the tool-head-side slightly loose by using soft rubber washers on the proper side. **Base Part** Connect all required cables to the not-powered(!) board, arrange them, tie them together temporarily and cut them at the position of the print head. If your connectors are small and fit though the back-cover-tube: Remove the cables from the board. Solder the cables to the female connector and use thermal shrink tubing. Put the cables from the flat-side through the base part and the back-cover. If your connectors are big and don't fit though the back-cover-tube: Pull the cables though the cover and the base part. Solder the cables to the female connector and use thermal shrink tubing. Attach the connector with 2 20mm M3 screws and 2 nuts, place the cover and fixate it with 2 washers and 2 nuts. Connect cables to the board. Use a M3 screw, 2 washers and a nut to fixate the lever to the base part. **Extruder-Part** I'd suggest to use 5 additional Molex connectors to be able to disconnect the extruder from the plate to change the nozze or for other reasons. I used 3 2pin connectors for the 2 fans and the thermal sensor, a 3pin connector for the leveling probe and a 4pin connector for the 2 wires of the hotend heater. Solder the wires to the various connectors and then to the SUB-D connector. Push the cables and connector from the flat side into the SUB-D connector hole. Fixate the SUB-DD connector with approximately 6mm short M3 screws. You'll probably have to cut the screws. Fixate the extruder, the fan duct and the sensor. **Mill-Part** Solder a 100k Ohm resistor between the pins to simulate a thermal sensor. (If you use my circuit and a Z-probe solder a short circuit between a connected GND pin and the Z-sensor pin. Be careful, connecting anything else (12V, fan or motor pin) to the Z-sensor pin will kill your Microcontroller on the board.). Fixate the SUB-D connector from the flat-side into the hole with 2 M3 screws. Put both mill parts together and fixate them with 2 M3 screws and nuts. Use 2 M3 screws, nuts and washers to clamp the rotary tool. **Custom-Part** Solder a 100k Ohm resistor between the pins to simulate a thermal sensor. (If you use my circuit and a Z-probe solder a short circuit between a connected GND pin and the Z-sensor pin. Be careful, connecting anything else (12V, fan or motor pin) to the Z-sensor pin will kill your Microcontroller on the board.). Fixate the SUB-D connector from the flat-side into the hole with 2 M3 screws. **Connector** It might be necessary to use a pliers to bend the skirt of the male connector a little outwards. In such a way the connectors will easier mate. **G-Code for Homing** This code requires the mechanical Z-endstop and sensor-endstop being wired in series. The homing is performed after(!) heating the bed and hotend. ; ### mechanical home ### G28 ;home Z with meachnical endswitch ; ### set temperatures ### M106 S255; fan on, starts cooling of nozzle M140 S[first_layer_bed_temperature] ;set bed temperature M190 S[first_layer_bed_temperature] ;wait for bed temperature M104 S[first_layer_temperature] ;set extruder temperature M109 S[first_layer_temperature] ;wait for extruder temperature ; ### sensor home ### G1 Z6 F180 ;lift to inactive sensor height G1 X127.5 Y168 F6000 ;move sensor to exact center G28 Z ;home Z with sensor G92 Z3.95 ;adjust this height difference of sensor and nozzle G1 X70 Y0 Z0 F6000 ;move away from print bed ; ### prepare filament ### G92 E0 ;zero the extruded length G1 E8 F100; extrude filament G92 E0 ;zero the extruded length again G4 P500 ;wait for filament to feed through G28 Z ;home Z axis