Under-extrusion, probably due to insufficient heat, or printing too fast. Check out this article to start: https://www.matterhackers.com/news/how-to-get-the-best-3d-printed-parts-by-understanding-extrusion-settings

MatterControl does not have this functionality. Pause is the closest function you'll likely find.

MatterControl always runs in absolute mode, even if relative is specified.

You can configure any set of commands to be run during pause by inserting them into the Pause G-Code field: http://wiki.mattercontrol.com/SETTINGS/Printer/Custom_G-Code/Pause_G-Code

See here for a reference to G-Code commands: G-code - RepRap

MatterControl sends G-Code over a serial connection, so if the Trinus3D can support that protocol, it is compatible with MatterControl at the basic level. I noticed from a quick search about the printer that it also transforms into a laser engraver; this functionality is not inherent to MatterControl. Only the 3D printing side would likely work, though with some experimentation, you might be able to use the laser.

In any case, we don't have one, so we won't likely produce a profile for MatterControl in the short term future, but you can probably figure something out. Check out these links for more info:

• http://www.mattercontrol.com/#jumpMatterControlDownloads
• http://wiki.mattercontrol.com/Getting_Started#Connecting_to_a_Printer
• http://wiki.mattercontrol.com/Custom_Printer_Profiles#Edit_printer_settings

Thanks for your report. This is a known bug, and is on the list of issues to fix.

At the moment, we don't have a work around solution to offer, unfortunately.