Tachikawa Linemarker A.T Sketch Pen - 0.1 mm

I purchased this pen after I recently bought the 0.3mm Linemarker. The 0.3 made a line roughly the width of my 0.5 gel pens. Therefore, I expected this pen to make a finer line, perhaps close to 0.4 or even 0.3 gel pens. Unfortunately, I cannot see any difference between the two pens. I've tried both of them on all types of paper, and the results are visually the same. I compared the nibs under a magnifier, and didn't see any size difference between them. So I'm disappointed. Like the 0.3 pen, it makes a nice consistent line on most papers. (It skipped a bit on rough sketch paper.)

Holy. Cow. My new favorite pen. I have been using the Linemarkers in the 0.3 and 0.5 sizes for a few weeks (which are also great), but I just got this in the mail, and I cannot contain my enthusiasm for how much I love this one! I am drawing at the time of writing this, and I keep stopping to admire the line and the pen itself! I have to disagree with the previous review about the lack of difference between point sizes on the 0.1 and 0.3 (honestly, I feel the size difference between the 0.3 and 0.5 is where the difference is least discernible).

These pens come with two cartridges of black waterproof ink. On cheap paper (which I really like unfortunately) sometimes the tines of these pens can catch some fibers which might cause skipping, which is easily remedied by a tissue. On cheaper or lighter weight paper, I also avoid wet-ink areas or filling blacks to avoid the clogging. I suppose they prefer a very smooth and thick paper, like hot-press bristol. These pens take a little experimenting to get used to; they don't appreciate hard pressure! It's better to press lightly, as if using a brush to get the best line quality and to avoid clogging the tines, which are not flexible, at least not by much.

I have not had the chance to refill any of my LMs, but I am cautious to heed the frequent use warning! There is a little fiber pad inside that feeds the ink, and understandably if this dries with waterproof ink...it's bricked! I left one uncapped for a half hour and had a panic attack...

The ink is waterproof, but a little slow to completely dry. It dries fairly quickly once applied, but in some areas where ink likes to collect on a line (the start and stop) might not completely dry as quickly. I also avoid erasing or rubbing for a few minutes, because it can smear. This again could be due to my absorbent cheap paper...but once dry, it's heavily dark and doesn't bleed or feather (20-24lb printer/bond paper).

I first encountered these pens in France in a shop window and was in love at first sight. I was incredibly pleased to find that JetPens stocked them once I returned...I wanted a fountain-style pen that would handle waterproof ink for art and they fit the bill perfectly. I am glad I took a leap to try this size.

awful. stopped working after 3 days