A cool pencils pot full of knurls :-) (just another example for the knurl surface library v2) This thing is big! More than 80mm diameter and 120mm height. The one I printed (PLA) has a wall thickness of 0.7mm. The ZIP file contains already compiled pots and test files with a wall thickness from 0.7mm to 1.2mm in 0.1mm increments). Do use the OpenSCAD to change whatever the dimensions you like.