drilling chain plates?

[Brian Duff]

As long as you can keep a half inch above the hole your drilling and the hole is centered on that 1.5" width, go a head and get a 33/64 drill bit, sharp. You can use either a cordless or large 1/2 chuck drill and drill pretty slow, push hard and use as much oil as you can, keeping your deck in mind, Teak looks pretty messy if your not careful, and it adds hours to clean that mess up !
Use a fairly large drill liek a 14.4 cordless or big electric drill. You may consider drilling one or two incremental sizes. I will normally go straight to a 1/2" cleanced hole, but you be sure to hold on tight if you dont want to break bits or get hurt, and go slow.
Doesn't OS have a stud that will go from 1/4" wire to 1/4" stud or am I remembers something incorrectly ? I'll google that ...
Have fun. Brian