Hello there,
good home-made heat sink is more difficult to make than you think. You have to have a lathe and you really need to design your heat sink - see mine:
If you don't mine imported stuff from Thailand you can order $11 heat sink from...
Hi All,
This was my first mod of the 3D Maglite. I researched the market shopping for some nice DC-DC converters, and decided that it has to be a 3D, as fully discharged batteries go down to 0.9V (3 x 0.9V = 2.7V). All decent converters (efficiency more than 80%) require Min. of 2.7V input...