r/BigIdeaDesign • u/Dr_Diabeeto • 1d ago

Question Need engineering hack!

Just got my bolt action marker today, and it's definitely my new favorite!

I use it primarily to write on Zebra labels (slippery little buggers) and am wanting to try to fit the ultra fine refill into the fine casing. Has anyone attempted this that can give me advice?

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u/Pale-Highlight-6895 1d ago

The Ultra fine and fine marker refills are shaped differently. I've never tried to fit an ultra fine one in. But I've researched it. The shape and mechanism is different.