Geeetech A30 hot-end cable & PTFE tube safe holder

thingiverse

NOTICE: I try to design and publish things that can be useful to you too. If you feel this MOD may be useful for you, please consider a little donation in my favor. This will help me to create new things for you and for the whole community, Thank you! https://www.paypal.me/RobertoMacchi INTRODUCTION The hot box connector on our A30 printer is not designed with domestic security in mind because the current needed to power the heating cartridge is too high for the small pins of this connector. Geeetech has finally upgraded this connector to a larger and safer one on their latest models, but many older printers still use the old design. Furthermore, the continuous back-and-forth movement of the X axis causes electrical contacts in the connector to wear out faster, leading to unstable connections and frequent sparking of the pins designed for high currents. If you don't want to risk what happened to me, as evidenced by the attached images, I recommend printing this cable holder that also serves as a spacer for the PTFE filament guide tube. Its installation is very simple: remove the PTFE tube from the pneumatic connector, unscrew the four screws, correctly position this accessory, and then retighten the screws before inserting the PTFE tube back into the pneumatic connector. I designed this accessory in two versions: the original version requires longer 3MA screws (over 5mm compared to the original) for a solid 4mm thick base that securely fixes the hot-end. Optionally, I suggest also placing my reinforcement accessory, available here: https://www.thingiverse.com/thing:3135296 I then produced another version called B, which respects the use of the original screws but reduces the base to support the head of the screws to just 2mm thick. However, I do not recommend using this version because it requires less energy to tighten the screws and offers lower solidity for fixing the hot-end. This mod can be printed easily with PLA, preferably of good quality. Supports are required that will be generated in correspondence with the junctions of the rings of the cable holder and the PTFE tube holder. Once assembled, use a tight clamp on the electric cable and another clamp to close gently but do not tighten for the PTFE tube. I am at your disposal for any clarification. Hello and good prints to everyone!