Quick change carriage for CTC Prusa i3 and TronXY X3

thingiverse

I acquired a laser module and required a quick change system so I wouldn't have to unscrew one carriage and screw the next one on, which led me to research extensively and come up with this quick change system. It's straightforward in use - simply slide one off and slide the other one on. I designed it for the CTC Prusa i3 with the aluminum right angle Z carriage but it will likely fit other printers with 8mm rods featuring LM8UU bearings (hopefully that's the correct number). I employed 15-pin D-sub connectors, with wiring as shown in the image above. The T-shaped item is a cable holder that I didn't think of when designing the modified Y carriage so I designed and printed it afterward. I glued it to the back of the extruder caddy and secured cables to it using cable ties; don't use it if you prefer not to. The small cable holder screws onto the top of the laser caddy to hold cables in place, again, don't use it if you prefer not to. ***** EDIT *****: I've added the TronXY 3XA STL file for the quick change X carriage. On this version, the fitting holes are moved to align with the holes on the original X carriage. I've also added a third hole for extra support; you'll need to drill an additional hole in the metal carriage if you want to use the third hole. Videos: Part 1 showcases the printer working and Part 2 demonstrates how the caddies are changed. Part 1: https://www.youtube.com/watch?v=hnQwVYYEHZc Part 2: https://www.youtube.com/watch?v=HuIc9wPnOys&feature=youtu.be ***** DISCLAIMER ***** (probably not needed but I'm taking no chances): If you intend to print and use this, ensure your printer is turned off before pulling the caddy off or sliding the other one on. Failure to take this precaution can result in damage to your printer board. Use it at your own risk. If you find it useful and decide to print it, please give us a like and leave a comment. Thanks