Drawing Table Tuesday

I've dubbed these scanner tremors.

My scanner intermittently does this. They're never in the same places, which leads me to think that it's a physical problem, probably the mechanics of the scanning bar and the little mechanism that pulls the bar. I don't know if the little motor's crapping out or if it's just a crappy scanner and it's just smoother sometimes than others. Opening it and spraying a little wd-40 may fix it, but it also may not.

I'll address the problem if it gets worse. Right now I'm fine with just having to re-scan something once every twenty scans or so.