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  1. ScrewYouGravity

    One way bearing for filament retraction

    Thanks all for your replies. The free-wheeling resistance has to be very low to avoid causing issues in the print. An active slip clutch or magnetic clutch would work to engage/disengage the motor, I was just wondering whether there was a passive solution I hadn't yet discovered. Unfortunately...
  2. ScrewYouGravity

    One way bearing for filament retraction

    Hi everyone, I am currently working on an upgrade to a 3D printer filament spool holder. I have been looking for a passive system which allows the free turning of a spool in one direction and engages is with a motor in the other direction. I have experimented with one way bearings however I...
  3. ScrewYouGravity

    Single-shot Motor Test Duration

    Thank you for all your answers! The purpose of the motor is to extend a boom containing sensitive electronics. The boom will be extended at mission start and it will not be required to stow and redeploy it. I am starting to think that the number of cycles / parts tested is much more important...
  4. ScrewYouGravity

    Single-shot Motor Test Duration

    Hi all, I'm looking for information on how to define the appropriate test duration for a single-shot actuator. The actuator in question is an electric motor which is planned to function for 30s only in orbit. The motor is a single point of failure for the mechanism. Powering the motor for...

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