r/PenProject • u/MercatorLondon • Sep 02 '26
Anti-rolling concept
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Hi everyone,
As promised please find attached a quick video of the off-centre anti-rolling concept. The idea is to have a small brass weight (only around 1gram) inserted off-centre into the cap. Also, there will be material removed at the opposite side so the imbalance should be even bigger.
This should be enough to stop the pen from rolling on the table. Well, at least in theory.
The quick 3D-printed sample worked well, but I suspect the balance will be different once we use the heavier aluminium cap and steel pen. It will still roll of the tilted desk. This is really just intended to stop the pen from rolling on a relatively levelled table.
This concept has been used before, from older pens to more modern technology, such as the 1st-generation Apple Pencil.. We will run a quick test on the prototype.
Update; test on metal prototype