Drills for a wood router?

[Pat]

I'm wondering if anyone has found a way to use twist drills with a wood router? Standard router collets are 1/4" and 1/2" which means you can use 1/4 and 1/2 inch twist drills. I'd like to use more sizes but can't seem to find anything that would allow this. Runout isn't a big problem in this application because its typically drilling holes in wood and the natural expansion/contraction of wood is usually a greater problem than runout.

My router is a porter cable and its minimum speed is 10K which means I'll be dulling bits real fast but I learned how to sharpen then on a grinding wheel years ago (takes about 30 seconds) so I can live with that 8)

I use a Porter Cable router.

[orbitaudio]

I had an adapter made up to put a standard 1/4" drill chuck in my router. I got a 3/8" UNF bolt, chopped the head off and then had the top part machined down to 1/4" to fit into the router collet. You can then screw on a cheap 10mm drill chuck from ebay. My router has variable speed control, so I only use this on the slowest speed.

[admin]

I had an adapter made up to put a standard 1/4" drill chuck in my router. I got a 3/8" UNF bolt, chopped the head off and then had the top part machined down to 1/4" to fit into the router collet. You can then screw on a cheap 10mm drill chuck from ebay. My router has variable speed control, so I only use this on the slowest speed.

I can't say I'd risk that with my router because of the need for balance at router speeds............