Old Methane Gas Cloud
Join Date: Jun 2009
Location: Huntington Beach, California
There are two incarnations of the bit. The one that is on sale is intended for wood up to about 5/8". That is the bit that is on sale. If you think about how the retail business works, the reason that the bit is on sale is because the bit isn't selling. The larger bit (91722) is selling some what better.
I have used the larger bit. (Amana not Rockler) My experience is that set up is exceptionally difficult. A perfect set up even with a micro adjusting router lift is just not reality. Even using a couple of jigs, set up is just not an easy job and almost never perfect. I don't have the book at hand, but check out pages 130 to 134 (somewhere in that area) of "In The Craftsman Style" for details about the jigs and how to use the router bit.
If you are building a box or cabinet carcass, a simple miter, TiteBond III and squaring jigs will give you just as strong a joint. When you tear apart a miter joint using TB-III glue and clamped long grain to long grain it is the wood fails before the glue. IMHO, TB-III is a stronger wood glue than any of the polyurethane (a.k.a. Gorilla) glues. But I digress. IMHO, the bit is nice in theory but not the most practical when making mitered corners.
Use the right tool for the job.
Rich (Tilting right)
Huntington Beach, California
Remember that when we have the "BIG ONE" everything east of the Rockies falls into the ocean.