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Re:Pilot FriXion Erasable Pens: A Comprehensive Guide by astoriafloyd on Wednesday March 09, 2022 @05:06PM (#30620610)
You ever try sticking them in the freezer to see if they just heated up?
Re:Pilot FriXion Erasable Pens: A Comprehensive Guide by JohnBooty on Wednesday March 09, 2022 @07:43PM (#30621907)
No, never tried that.

The ink inside the pens could be clearly seen, so I don't think it was invisible. And the ball in the ballpoint clearly felt like it had locked up.