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  1. #51
    Engineer-in-Training
    Join Date
    Feb 2015
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    372
    I do not. That is a great idea. The times i have been present it has printed fine.

    As a test I let the printer idle over night. I set the speed lower and it was the same in the morning. If the power had interrupted it would be 100%, which it was.

  2. #52
    Engineer-in-Training
    Join Date
    Feb 2015
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    211
    Quote Originally Posted by tsteever View Post
    I do not. That is a great idea. The times i have been present it has printed fine.

    As a test I let the printer idle over night. I set the speed lower and it was the same in the morning. If the power had interrupted it would be 100%, which it was.

    If you aren't printing though you probably aren't loading down the power supply, also nothing is moving so if there is a short somewhere it may not happen.

  3. #53
    Engineer-in-Training
    Join Date
    Jun 2014
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    350
    If the thermal runaway is enabled, that might be triggering it.

  4. #54
    Engineer-in-Training
    Join Date
    Feb 2015
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    372
    That isn't enable. Good thought though. I am going to switch back to my old power supply and see if I get the same problem.

  5. #55
    Technician
    Join Date
    Nov 2015
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    73
    Would you still recommend the solid state relay mod with a i3v 12" purchased today with the built in relay and aluminum heat bed mount? Does the new heat bed having a built in relay make this mod not possible?

  6. #56
    Engineer-in-Training
    Join Date
    Feb 2015
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    211
    Unless he is now shipping a bonded aluminum heat bed then yes I would still recommend it. By bonded aluminum heat bed I mean the heatbed itself is bonded to a piece of aluminum.

  7. #57
    Technician
    Join Date
    Nov 2015
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    He mentions the relay is now built in. Would that mean I'd just have to rig it to be always closed and then add the solid state or should it still be possible to cut it out now. Never seen one in person yet so not quite sure what to expect.

  8. #58
    Staff Engineer printbus's Avatar
    Join Date
    May 2014
    Location
    Highlands Ranch, Colorado USA
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    1,433
    Add printbus on Thingiverse
    Quote Originally Posted by Dustin B View Post
    ...Does the new heat bed having a built in relay make this mod not possible?
    Can you provide a good picture of the relay on the heat bed? If it is a mechanical relay, you'd have to either wire that relay so that it is energized all the time or jumper across the contacts for that relay. PID requires the use of a solid-state relay that can be switched on and off much faster than possible with a mechanical relay.

  9. #59
    Technician
    Join Date
    Nov 2015
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    73
    Don't have it yet. Planning to order soon though. From the description on the website I'm going to guess jumpering across the contacts will end up the easiest solution.

    Has the relay you ordered continued to work well for you with just the heat sink to cool it?

  10. #60
    Engineer-in-Training
    Join Date
    Feb 2015
    Posts
    372
    I purchased the relay and heatsink posted here and have had zero problems. In fact, I haven't noticed my relay getting even remotely hot. That heatsink is huge!

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