MedusaHC adds automatic hotend changes to a Klipper printer through an open-source mechanical system and Python controller. The beta project coordinates pickup, parking, feeding, priming, cleaning, and sensor checks, while keeping familiar commands. It suits careful makers testing multi-material setups, but requires mechanical work, calibration, and the repository’s installation guide.
Read the build on github.com: MedusaHC: Open-Source Python Toolchanger for Klipper
A community discussion records one maker’s work adding K1C-like cooling and temperature sensing to a Creality K1 SE. The changes involve fans, a thermistor, wiring, firmware, and Klipper configuration—not just printed or mounted parts. It also warns against assuming K1C firmware will work safely on every K1 SE.
Read the build on github.com: Converting a K1 SE Toward K1C Features
Six years after shelving SLA printing, the author tests a new resin printer against 2020 expectations. The results include good-looking parts, failed jobs, setup headaches, and software friction. Fluidd’s open browser workflow makes a useful contrast with slicer APIs, cloud services, authentication demands, and vendor-controlled access.
Read the build on hackaday.com: What Happened When Resin Printing Got Another Test