Various prints and a strange pen behaviour

Some more prints from a couple of days ago. They look very good, I only discovered a few slight problems with them. 

Design from Thingiverse

The 3D cubes one is not perfect, but you can still see the 3D in it. 

Design from Thingiverse

I made these 2 eggs just as an example that how easy is to make a new printable design in Inkscape. I used my Google men file (now uploaded to Thingiverse) and the Hershey text extension.

During the printing of the 3D cubes I discovered a new anomaly. My ultra fine Sharpie pen became thicker by the end of the printing. Have you ever experienced anything similar?