OpenRC Tractor Mk3 TEA20 - Revised Rear Axle

This is an updated axle to the OpenRC Mk3 Tractor, resized and revised to fit better and eliminate slippage issues on the original part. The updated version fits much more securely onto the motor shaft, with the wheel bearing working to clamp it down to prevent slipping. The wheel side also fits better into the wheel hub to eliminate issues with wobbling. Screw hole is also slightly smaller to prevent it being stripped out. The bearing will be a very snug fit by design. Drop-in replacement for part number 9, rear axle, on the OpenRC design. No modifications required. Recommended to print at 100% infill and 0.10 to 0.20 layer heights. No brim or support required.