I guess it depends on how valuable your time is. That is what I was getting at. Driving one hour each way to buy material, the time spent researching and planning, the time spent re-working the design so the caps stand up, etc. Easily a half day if not longer. (It is fun though.)
Originally Posted by Absinthe
I sometimes get the bug to build an LED enlarger light source. However, electronics is not my strong suit. The amount of time it would take me to do this would be prohibitive. Not to mention that I already have limited time for photography. In the end, I use my dichroic light source and wish that RH Designs will make a universal 4x5 LED light source that works well with their timers.