Looks like that is going to be a useful resource for many users. You have done a great job.
I would mention the aftermarket collets available for standard routers, and how they give you some of the benefits of an ER style spindle collet. I have a set of the precisebits collets and I don't know what I would do without them.
I may have missed something, but I would suggest that the section on chip load could be improved by mentioning the visual, and audible, indicators of a chip load that is too light. (dust, smoke, screaming bit, etc...) I would also mention something about how the bit at least for most applications I am aware of should never be too hot to touch.
The more practical considerations the better. It amazes me how many woodworkers are not aware of the concept of chip load, and this was something I was not aware of myself until I started working with CNC equipment. I have taught, and demonstrated to quite a few experienced woodworkers that the reason why their bit was smoking, and producing dust was not that it was dull, but that they were cutting way to slow with it.
Michael Schwartz - Waitsfield VT
Shopbot prs standard 48x96. Aspire. SB Link.