ENichter posted:this was posted by Ingeniero No1 a while back.
I have tried different size drill bits, and have settled on No. 48 (0.0760), but 5/64 (0.0781) works well also - for 16 AWG stranded wire and the No. 0 screw; that is.
After I drill the hole and insert the No. 16 AWG stranded wire (26 strands of No. 30AWG), I use a pick to separate the strands to make it easier to start the screw.
From Micro Fasteners. I tried different head configurations (button head socket, slotted, and phillips pan head) and these worked best for me:
Product No. SMPPK0004
Pan Head Sheet Metal Screw - Phillips
Size: #0 x 1/4
Finish: Black oxide
Price: 100 for$ 4.30
http://www.microfasteners.com/...products/TWSSMPP.cfm
I wired my entire layout using this method that Alex perfected. Works great, easy to make changes and also very easy to do. Any old drill bit (proper size of course) will easily drill through the nickel silver rails. I used the 5/64" bits, usually easier to find than the numbered bits. Use a slower and steady speed. I can't say enough good things about this method (or Alex for sharing it) of attaching power to your Atlas track.
