Honda SevenFifty Throttle Tube

thingiverse

I broke my throttle tube while trying to remove the cables. This mishap led me to design a replacement part to teach myself how to use Fusion 360. After printing a first version with PLA, I wasn't confident in its robustness, so I decided to try using ABS instead. Printing with ABS is notoriously difficult, and I encountered some trouble getting a good result. However, I studied the process and made some adjustments: * I raised the bed temperature to 110°C. * I increased the brim size to 18 lines, both inside and out. * I surrounded my printer with cardboard to minimize temperature fluctuations. * I also thickened the tube slightly. Despite these efforts, the printed part still cracked when I tried to force it into a rubber grip. This confirmed my suspicion that the part was too fragile for this type of use. Undeterred, I began researching ways to harden a printed part and discovered the process of "annealing." After an hour at 100°C in the oven, I tested the tube's strength by hand and found it to be significantly more resilient than before. However, the annealing process did cause some deformation. I'm now considering trying another orientation for the part and reapplying the annealing process. I've also conducted a torture test with a screwdriver, which revealed that the part still needs further hardening. Additionally, I'm pondering whether acetone vapors could help strengthen the part or if they might have an adverse effect. I welcome any advice on how to proceed with this project.