Hole-size tester for "Customizable fancy pencil holder (you choose the number)"
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Not all pens are perfectly round and 8mm across. This tool will let you adjust the size for the holes of a small tester.
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- Creative Commons — Attribution
I found "Customizable fancy pencil holder (you choose the number)" of Thingiverse. (https://www.thingiverse.com/thing:797104) but discovered after printing that my pens did not fit. And ideally turn them upside down, but has a little lid on it and are therefore not perfectly round. Since the pen holder was written in OpenSCAD I thought continuing would ease the workflow.
Files:
OpenSCAD script with adjustable values
model for 5 holes ranging from 8*10mm to 9*11mm in steps of 0.2mm
sliced model for a Core One L in PLA, standard settings.
OpenSCAD downloaded from: https://openscad.org/downloads.html
About the script.
// Pen sizes to test: [minor_dia, major_dia]
test sizes; measure your pen, enter the value in mm here. If your pen is round, set identical sizes. If not, measure to adjust. 5 holes should get you there, but adding a row adds another hole.// Hole angle (same as your model)
the holes are angled in the pencil holder, so it should be in the tester too.// Hole depth
The depth of your hole, currently oversized at 50mm to make sure it doesn't disappear in the block itself// Block size
the size of the block in which the pencil-holes should go.
***NOTE***
When you discover holes are being drawn outside the block, adjust values at the VERY BOTTOM of the script, under // MAIN TEST BLOCK //. For me it was enough to change the Y value and Z start.
Tips&Tricks.
Use the Preview (F5) button (4th icon from the right in Editor, with 2 arrows pointing right. When you don't know what a value does, change it and see in the preview what changed. That will help you understand and with Undo (Edit->Undo or Ctrl+Z) you can undo that action.