A resourceful 3D printing enthusiast has developed a low-cost solution to significantly increase the flow rate of FDM printers. The self-built booster, which was made from a simple copper screw, promises an increase in performance of up to 50 per cent.
The main problem with high printing speeds is the incomplete melting of the filament. The booster developed by the maker aamott addresses this problem with a special design. It replaces the standard spacer in the extruder and has a hole that ensures that the core of the filament also melts completely.
The production of the booster only requires basic tools. A hole was first drilled through the screw using a pillar drill and a 0.7 mm PCB drill bit. The developer then enlarged the hole with a 10-degree CNC engraving cutter to create the required taper. After cutting off the screw head and finishing the surface, he cut radial slots into the booster body. To do this, he used a jeweller’s saw blade, which he threaded through the hole.
The result is a hole that is wide enough at one end to accommodate the filament and narrows to a roughly cross-shaped profile at the other end. In combination with two replica Bondtech-CHT nozzles, the booster showed impressive results.
aamott also published an explanatory video:
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