Big air bubble in a ballpoint standard Muji pen. Pen experts

A simple pen for everyday use. The oil based ink can withstand a light wash, and is good for multi-media sketches.

MUJI Polycarbonate Ball Point Pen (Blue) 1 PC

MUJI Smooth Gel Ink Ballpoint Pen Knock Type 10-Pieces Set, 0.5 mm Nib size, Black

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Smooth Gel Ink Knock Type Ballpoint Pen 0.5mm, Pens

MUJI Smooth Gel Ink Ballpoint Pen Knock Type 10-Pieces Set, 0.5 mm Nib Size, Black : Office Products

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How can I consolidate all the ink in this pen at the bottom of the tube? There's plenty of ink, but many air gaps. : r/howto

Wholesale Pen With Logo - Interwell Stationery

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