Cr-10 Filament Topload Conversion
Description
This is a modification to move the spool holder to the top of the frame. I converted my CR-10S with a direct drive extruder, and I deleted the bowden tube. I mounted my spool to the top of the frame using standard t-slot hardware, but my direct drive bracket became too tall at the top of the print area and either hit the spool or pulled the filament at a bad angle. I decided to create a canted mount for the spool, and a filament sensor mount to match. Mount the spool holder to the frame using 2ea M5x20 screws and 2ea M5 t-slot nuts. Mount the filament sensor adapter to the frame with 2ea M4x12 screws and 2ea M4 t-slot nuts. The filament sensor adapter accepts the standard CR-10S filament sensor switch and lid. A bowden tube guide is optional, but can be fashioned using PC4-M10 fitting and standard bowden tube. The X-axis bracket is to provide a method of securing the extruder wiring at the front of the frame instead of mounting at the standard location behind the frame. At some point, I may re-design with a long feeder bowden tube to minimize the lifting effect of the extruder motor pulling up on the filament and lifting the gantry during extrusion, but for the near future I'll be doing a test and see if I have any issues with the current setup first. If I have no issues, I'll just leave it as-is.
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