This is a set of Resin Identification Codes ("recycle triangles") inserts for merging in to your creations to show how the plastic may be recycled at a later time.

To help with sorting a couple of commonly-used 3D printing polymers, there are three inserts provided for code 7. In addition to the generic "Other", there are inserts for "PLA", and "ABS".

Includes:

Code 1: PETE
Code 2: HDPE
Code 3: PVC
Code 4: LDPE
Code 5: PP
Code 6: PS
Code 7: OTHER
Code 7: PLA
Code 7: ABS

Nothing fancy. The "recycle triangle" glyphs are in Unicode, so I just used FreeCAD's ShapeStrings with a font that includes these glyphs, then extruded the text.