Why you need a filament runout sensor

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FDM (fused deposition modeling) 3D printers, better known as filament 3D printers, come in a wide range of models, at a wide range of prices, with many different features.

The feature we're going to talk about today is the filament runout sensor. As you might imagine, this sensor tells the printer when it runs out of filament.

On smaller printers (printers with a smaller build area), this might not be all that important. That's because it's less likely that you'll run out of a spool of filament with a printer that can't print anything particularly large.

But what about large printers (that is, printers with a large build area)? It's entirely possible you'll want to print something that will take more than one spool of filament.

Thanks to ColorFabb for the filament for this project:


Ford engine block model: