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Josef Prusa Wants You to Change File Formats

We’ve all been there. You to find that cool cat style on Thingiverse — we received’t pass judgement on. You download the STL, all in a position to look at the magic of getting it materialize in your print mattress. But the slicer complains it isn’t manifold or watertight or one thing like that. What a let down. Part of that is because of shortcomings within the STL report structure. There’s a more recent structure to be had, 3MF, and Josef Prusa and Jakub Kočí would love you to begin the use of it.

STL — brief for stereolithography — is a straightforward structure that simply holds a host of triangles. If you want any details about the section — like colours or fabrics. Worse nonetheless, as in our hypothetical instance, there are not any definition about how the triangles relate so you’ll be able to create “dangerous” STL recordsdata. Even correctly shaped recordsdata will also be tricky to paintings with. You may scale for inches and the report is ready for millimeters, as an example.

Turns out 3MF is in truth a ZIP archive and it might probably include a lot of knowledge. The report can include one or extra fashions, colours, chopping knowledge, copyrights, photographs, and loads extra. The ZIP report is incessantly shorter, too as a result of the compression. The giant deal, even though, is that the report structure received’t permit nonmanifold fashions and gets rid of ambiguity in order that the whole lot properly prints. If your slicer retail outlets knowledge into the report — because the Prusa one does — folks the use of the similar device can clutch your settings, too.

The structure isn’t in point of fact that new — it gave the impression round 2019 — however it hasn’t observed standard adoption but. Prusa encourages you to add fashions in 3MF despite the fact that you additionally upload an STL replica for individuals who haven’t made the transfer but.

So will you get started the use of 3MF? Or are you already? The report structure is open, they are saying. So in case your favourite device doesn’t like 3MF, it’s good to all the time upload reinforce for it your self.