Articles on: Troubleshooting

Not enough filament: why the queue skips a printer that's low

A free printer won't pick up your queue item, and the queue inspector (or the printer) says "not enough filament" - here's the quick fix.

What this means

SimplyPrint uses tags to route the right files to the right printers - so a job only runs on a printer that can actually print it correctly, and you don't waste time and filament printing something on the wrong setup. A file or queue item can be tagged with details like its material, color, nozzle size and bed type, and SimplyPrint also checks things like whether the model fits and whether the printer can run the file. When a printer doesn't meet one of the item's requirements, the two won't match, and the item won't start on that printer.

In this case, the printer has tracked spools assigned, and there isn't enough material left on them to finish the job. SimplyPrint won't hand a printer a print it can't complete, so it won't run while it's low or out of filament. This check only runs when you assign real spools (static material tags aren't tracked by weight).

How to fix it

Load a fuller spool, or update the remaining amount on the assigned spool.
Or assign a spool with enough material to the printer.

Learn more

For every reason a printer won't take a queue item - and how the queue inspector pinpoints which one - see the guide below.

Why won't my printer print this queue item? Using the queue inspector

Updated on: 04/07/2026

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