| > Have I not Googled with enough intensity? Does this animal exist?
| > Perhaps a 1/4" shank is insufficient for a bit of this size.
| > Dave
| That may be the case. I assume you are using a 3/4" radius on some thicker
| wood and not trying to round over a piece of 3/4" wood and want a radius of
| about half that. This is a good excuse to move up to a new router with 1/2"
| I've heard of people buying the wrong bit because they were not thinking
| right when they wanted to put a roundover on a 3/4" thick board. Not me, of
| course, I've just heard stories about it.
A 3/4" radius bit on the business end of a 1/4" shaft is a lot of tin to spin. A 1/2" shaft is definitely a good idea. It will not flex as much as the skinny shaft under the stress of chewing off big bites of wood.
A plus is most 1/2" collet routers also include a 1/4" insert so all the old bits can still be used and you get the option of needing a whole new set of bits. Just can't get enough of them. :)