Or at least one that is semi-specialized.
I need to drill holes in 1/4" thick metal rails, top and bottom to put new pickets in. The design the owners like best involves a countersunk screw on the top rail.
What's the best way?
- Is there likely to be a bit for metal that will combine drilling the through hole and the countersink part, the same way there is for wood?
- If not, I can do the operation in two steps-the through hole first, then the countersink portion.
- In either case, how do I control for depth for the countersink part, so the top of the screw ends up being flush, or nearly so, within paint thickness?
- Also, the countersink should have the same angle as the screw itself. How difficult will it be to match?
- Any suggestions for suppliers? HD and similar stores probably won't have the bits I need.
Thanks,
charles