Known Issues


Frozen Ember:

  • THE PROBLEM: Although uncommon, some Embers have been known to freeze either during a print, or when in standby mode. If this happens, Ember's control panel sticks on a screen and Ember becomes unresponsive to any button presses.
  • THE SOLUTION: Follow these instructions to upgrade your firmware to version 3.0.
  • If, for some reason, you are unable to upgrade your firmware, and must continue to use v.2.x,  then you can follow these instructions - If your Ember freezes during a print - and in particular mid-exposure (while the projector is on) - first, turn off your Ember. Gently remove the build head and then the resin tray before turning Ember back on. [If you observe this problem, follow these steps as soon as possible, so as to prevent damage to your resin tray due to over-exposure from the projector.] If your Ember freezes while in standby mode, simply power cycling it will fix the problem - disconnect it from its power source, pause 5 seconds, and then power it up again. 

Attempt to load a print file fails, and the front panel is stuck showing "Loading file..."

  • The workaround is to restart the printer and try again.  In order to minimize the chance of this happening, do not attempt a second download while a previous download is still in progress, and keep the printer connected to the net via Ethernet.

Slow upload of print data via USB on Windows PC's: 

  • NOTE: A fix has been created for this issue. Click here for instructions on how to apply the fix.
  • When connecting to Ember via USB with a computer running Windows, it may take 30 seconds to over a minute before the network connection is ready for use.  This delay can be decreased by disabling network discovery for home networks under the advanced sharing settings accessible from the network and sharing center in the control panel.  This work-around has only been tested on Windows 7.  Be aware that disabling network discovery may have unintended consequences.

Ember's Web Portal:

Changing print settings for the same model:

  • If you want to create and manually download a sliced file (.tar.gz) using the same STL model but with different settings, you mush re-upload your model, rather than selecting "Re-Print" from the print history.  If the "Re-Print" function is used (although there will be an option to "Download the Sliced File"), the contents and print settings of the sliced file will be those of the previous file. The only way to change the print settings is to re-upload the file and apply new print settings to it.
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