Y axis H frame reinforcement

thingiverse

I had purchased an Alunar M505, which is essentially an Anet A8 clone, the H frame was visibly bent along one side of the guide rail, causing the bearings to bind up. I requested a replacement but didn't want to wait for a month as it was the only component holding me back from completing my project. So, I utilized a 1 1/2" aluminum angle that was 1/8" thick, leftover from other projects, and after measuring it against the current H plate, marked the holes onto it. Next, I drilled and cut the side notches for the butterfly nuts, then assembled everything. The result was outstanding - extremely stable - and this solution could work well with the plastic sheet plate on other models too. If your measurements differ from mine, you can use my main file as a reference; however, the H frame needs to be straight or you'll experience significant noise from the bearings. I'm still upgrading my printer to accommodate nylon and ABS, so consider using a stronger material than PLA for this project.