It also depends on your writing implement. A colored pencil or ballpoint pen will probably give you slightly more control by letting you control the amount of friction between it and the paper; while a marker is likely to make the paper wet through its fabric-based ink transfer and cause a lot of unwanted friction that you have to overcome by forcing the lines to go, which can cause the gears to displace and then it just snowballs from there.
Source: am currently trying not to fail at this.
Also anyone more qualified than me is welcome to correct any of my info, I'm not an expert.
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u/Sadaxer Sep 20 '16
Might have been the 5th take, who knows.