Papercrafts and other fun things

  A Cam Mechanism that Moves a Rod Horizontally  Here is the mechanism in action. The cam is an eccentric circular cam.  The cam is off cent...

Two Trick-or-Treat Dioramas make a beautiful display for Halloween. The diorama depicts two different sets of trick-or-treaters for Hallowee...

A STEM project that compares four different types of cam and followers. The four cams are a heart-shaped cam,  pear cam, snail or drop cam a...

  A Sand and Sea Diorama The diorama depicts two little girls playing in the sand at the beach. The older girl is carrying a bucket of water...

A 3-D Paper Model of Sierpinski's Triangle Sierpinski's Triangle is a fascinating structure whereby an equilateral triangle is reduc...