SculpText
A 3D Animation of Text, using outline fonts 
Beyond Escher for Real
More realization of so called "Impossible Objects" by others
Mosaic4u
Conversion of any given 2D image to mosaics of fixed size stones but arbitrarily oriented 
Captchanim
A derivated work of SculpText toward free animated Gif's Captchas 
NCSim
A free 3-Axis CNC Simulator, from G-code 
Ortho Pics
Building 3D models from two (or more) 2D images 
Escher for Real
The realization of many so called "Impossible Objects" by M.C. Escher 
Wood Working
My wood working/wood turning hobby page 
Dithered Ortho Pics
Another builder of 3D models from two (or more) 2D images, as 3D dithering 
3D Puzzles
Some, not so new, 3D puzzles as 3D geometry