MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
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From the manual for the i3 MK3

“11.3 PET/PETG
PETG is a very tough material with good thermal resistance. Its use is universal but especially suitable for mechanical parts and both indoor and outdoor use. PETG has almost no warping,​so printing large objects isn’t a problem. We use PETG to print parts for our printers!”