Mod Mania—Fan Mounting, Air Cooling, and You!
 

Last time out, we rose above square windows. We spent the last column transferring a mathematically symmetrical, easily translatable pattern from a doodle to a case panel, ready to be cut with the tool of your choice. I used my Dremel with a number 426 fiberglass reinforced cutoff wheel to chop out the various holes to create a radiation symbol.