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This is the 3D-printable “lie detector” I use before trusting a new spool of filament

By Sydney Butler 6 views 0 comments
This is the 3D-printable “lie detector” I use before trusting a new spool of filament
Image: How-To Geek

A compact printable card reveals color shifts, transparency, and tiny tolerance quirks that only show after extrusion.

How-To Geek Original story · www.howtogeek.com
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