LYMAN FILAMENT SPOOL WINDER
by hlyman, published
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What is required for the power supply? I am looking at making the filament extruder also and looking at getting a 12v 5amp PSU.
unless there is something that can be used for cheaper?
I saw one of these in action today. It occurred to me that the speed that the motor turning the spool pulled the filament onto the spool would increase as the diameter of the spooled filament increased. This could be remedied simply by turning the spool with a wheel against the inside of the spool rather than the rim. As the filament accumulated on the spool, the wheel would run against the already spooled filament, changing the effective gear ratio as the diameter of the spooled filament increased. This would all mean that the speed that the spool turned would be constant in terms of millimeters per minute of plastic being wrapped around the spool rather than being constant in terms of degrees per minute of rotation.
This would probably be easiest to implement using a motor with a right-angle gearbox. You could even get one with a rubber toy/robot wheel already on the shaft that could be used to turn the spool.
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This device works great, but final testing will not be done till I receive my extruder back from Desktop Factory Competition.
Comments and suggestions are welcomed.
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