I designed some rails to quickly install the batteries. I printed these parts standing on end so that layer adhesion wouldn’t create any weak spots and I used PETG because it is both stronger and has better layer adhesion than PLA. PETG also sticks well to the print bed so I didn’t have any problems printing them standing up. They are riveted on with 1/8” rivets and a 4 mm bolt at the bottom where all of the weight rests.
I used 14” long 120 pound zip ties to attach the sliders to the batteries.
The sliders are curved to allow the batteries to swell more than mine currently are. I put thin foam tape at each end (yellow circles) to hold them from sliding:
I placed the rails 120mm apart on centers and 3mm up from the bottom of the carbon.
Here are the files:
T-Bar and Miter Track - Top.stl (604.6 KB)
T-Bar and Miter Track - Middle Top.stl (151.4 KB)
T-Bar and Miter Track - Middle Bottom.stl (151.4 KB)
T-Bar and Miter Track - Bottom.stl (142.4 KB)
T-Bar and Miter Track - Slider.stl (57.7 KB)