Filament, nozzle, and extrusion

- [Instructor] Consumer 3D printers have to be precision…machines, but nozzles and filaments might not…actually be the advertised sizes.…To make up for any differences, you'll need to adjust…some of the settings we talk about here.…Fortunately, errors tend to crop up in some ways…you can really anticipate and we'll talk about how to…allow for some of the more common inaccuracies.…First, let's look about how to assess actual…filmament diameter.…Let's go to Settings and Controls…and Filament Material and look at the settings.…

Filament diameter is one of two standards,…1.75 and what's usually called 3 mm, which is really closer…to 2.85 most of the time.…The 3 mm filmament standard comes from plastic welding wire,…which is what used to be used in the earliest days…of hobbyist 3D printing.…Sometimes filament diameter can vary.…Until you're familiar with a particular brand,…you should check new spools with a pair of calipers…in a few places to be sure it's not different…from the setting here.…You should also check it at multiple angles…