mcbeen.com

Kosh upgrades

by on Mar.14, 2025, under 3dprinting, Technology

IT took so long to get Kosh stable, that once it was working well, I was resistant to making any changes. I’ve built up quite a list of upgrades and fixes over the past 18 months

  • Upgraded CNC-TAP using optical switch rather than mechanical switch. Carriage also has slight redesign for better rigidity.
  • Multiple extruders. Galileo2, LGX Clockwork2. Not sure which way I will go on this. I may end up just upgrading CW2
  • new mainboard MCU with faster processor to fix timing issues with canbus under load
  • new CPU for faster services, better efficiency
  • new TSMC2160 drivers for x/y axis
  • aluminum endcaps for gantry for better belt tensioning
  • cpap fresh air supply for part cooling
  • filament sensors before and after extruder on toolhead
  • filament cutter
  • ECAS 4 fitting for top on the toolhead
  • RGBW light kit for toolhead for better part lighting
  • Power relay for AC – automatic shutdown module

I’m starting with building up a new toolhead I can swap in as soon as all my parts arrive. I’ve decided to stick with Clockwork2 since its the reference for filamatrix. Filamatrix is a modified stealthburner toolhead for working with the BoxTurtle AMS system.

I’ve printed up the parts in ASA and ABS and spent the past couple days fitting everything and making sure all my hardware is mounted cleanly.

For the CPAP adaptor, I have been looking to see if there was a way to redirect a portion of the cool air to the MCU as its been getting a little bit warmer than I would like. Things are awfully tight in that area though. Gearing, motor, and filament cutter have all gone in well. So far I’m not seeing any jamming along the filament path. Driving the extruder is still smooth.

The wiring harness for the filament sensors is done as well, and I’m going to try and wire them into the bltouch connector. It has dual ground and signal pins which should be perfect.

I tested out the LED strand finally today. I have been waiting a long time to get this in. It’s an alternate version of the lighting string from fystetc. The wiring is attached with connectors and de-straining which makes it more resistant to vibration. It includes 8 leds in the logo for better animations and feedback along with RGBW leds on the tool head leds for far brighter and cleaner lighting. Very excited to get these programmed in.


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