February 24, 2017
Description
Print Head cables are too short, and the cable management is inadequate, leading to the cable being dragged across the work surface and hanging up on the build plate, and even getting caught on the work in progress. Especially when printing a large object that uses up most of the work area... 12 hours into a print is a bad time for the cables to get caught and cause a stall. After putting up with it for 3 years I finally broke down and did some much-needed mods. Finally replaced all carriages with Lawsy's modded carriage, added an X-Motor cable guide and cooling fan, and now a cable guide for the print head. I have run the printer sufficiently to make sure the cable guide has full travel and does not bind during operation, though I have not actually run the cables through it yet, as that will require lengthening all the cables to about double their current length, as they are all way too short. To mount the motor bracket, discard the heat sink on the back of the feed stepper motor... I can't imagine what good it does, as the cooling fan will do a better job of cooling the feed motor if it blows directly onto it, rather than onto a heat sink. This motor does not get very hot anyway. The endpoint attachment simply slides onto the frame at the back of the printer, and the wires get fed through the space between the frame and the endpoint to keep them away from the Y-carriage shaft. I'll post pictures as I rewire the print head. printed with PLA at 205 degrees . There are 20 links in the .STL file, and you will need all of them. Included original .RSDOC (DesignSpark Mechanical) files in case you want to mod.
License:
Creative Commons - Attribution