Friction, fit and powder removal are the three factors in play with axle design for SLS manufacturing. Manage friction by applying 1-2mm rails on the static ‘not stressed’ side of the assembly. Keep the clearance between the rails axle tube at 0.3mm. In regions away from the rails, a clearance of 2mm+ will enable complete and easy powder removal by blowing compressed air through the powder removal access ports modeled into the static side.
C2I 2024 Automotive winner: eVITA
I think this vehicle will have uses beyond wheelchairs. The ability to wheel a heavy object into a vehicle would be very useful to the rest of us. ...