Sphere-O-Bot Pen Washers

I found it difficult to put pens all at the same height for consistent multi-colored eggs. These little washers allow you to put each pen at the correct height depending on what you're drawing on.

There's a 5mm and 1mm, probably could do a 10mm as often several are needed. The ID is set to 10.2mm to leave room for the wall thickness and still have 10mm ID. Most sharpies are pretty close to 10mm but they are not super consistent.

Print off a bunch so you can put them on all the colors you might be using on a given project and enjoy pretty darn good alignment since the pens are at a very consistent height. Samples as proof!

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/dzWaPy9HDa5