Axels

Step by step tutorial for making 3D printable axels

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.

When removing powder rotate and apply pressurized air in tandem to blast the powder out of the axle cavity. Nylon as a natural bearing material will provide a smooth low friction mechanism for low load, low velocity applications. For more demanding applications where friction can generate heat, and wear, consider #3 Inserted Bearings.

WARNING: Some printed parts may present a CHOKING HAZARD or may be SHARP; not for children under 3 years old.
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Axels