Universal Blade Balancer

thingiverse

After discovering prices on real lawnmower blade balancers exceeding $100 US, I decided to create my own design. It functions by mounting the base on a wall and magnetically attaching a blade. The heavier side will rotate downward. Use a grinder to remove some metal from the heavy side until it remains in a horizontal position when attached to the balancer. This tool can also be used to verify the blade isn't warped by measuring its tip with a tape measure, then spinning it 180 degrees to check the other tip. To create this project, you will need: * Super glue to secure magnets to the chuck * Four 60x10x5mm rare earth magnets (available on Amazon) * Two 608 ball bearings (available at McMaster-Carr) * One 8x40mm shoulder screw (available at McMaster-Carr) * One M6 lock nut and one optional 6mm washer The shoulder screw and ball bearings may need to be sourced from McMaster, but Home Depot carries two packs of the M6 lock nuts. I used sealed bearings for my design, but they don't have to be. No supports are required during printing. This design is optimized for .333mm thick layers and a .5mm width on a .4mm nozzle. The hub and inside of the chuck will need to be sanded until the hub can smoothly slide into the hub. Smooth sliding is necessary, as this is how the balancer attaches to different size blades. I used ABS with a quick acetone vapor bath after sanding. If you decide to remix this design, please use the selected license I've chosen, as I don't want to see these online for sale without proper recourse.