How first prototype was broken and got repaired with extrusion-type 3d printing process.
Seat tube mounted chain device with amazing 18 g weight yet strong enough to survive all-mountain use.
Seat tube mounted chain device with amazing 18 g weight yet strong enough to survive all-mountain use.
Published on Dec 13, 2013
How first prototype was broken and got repaired with extrusion-type 3d printing process.