New Product: "The Accurate Guide" for Precise Dados and Sliding Dovetails Page 2c

With the router plunged to the preset depth, Beth makes the first cut. The arrow points to the Accurate Guide that has no spacer installed for this first cut.
	She tries one of the sample pieces to see how much wider the groove will need to be. Unlike the dado groove, the dovetail groove is real hard to judge. Here's hoping the guide will work as it did in the dado cuts.
For the next cut, Beth loosens the guide and places one of the sample blocks in position.
	With the sample blocks in place, she makes a second pass and widens the dovetail groove.
It's much closer and maybe could be forced, but she want to have a loose enough joint so that she can add glue without it being squeezed out of the joint.
	She adds a Formica chip sample to the wood block. It may make too wide a groove, but the instruction sheet says that this spacer should be greater than the business card she used in the dado.
She has made a new cut with the Formica chip sample in place and is now testing the groove with one of the sample blocks. It is loose but not too loose.
	The shelf slid in snuggly. Not too tight and not too loose. Up to this time, I have not had great success making sliding dovetails — I found that it took a lot of trial and error. The Accurate Guide works very well. It is easy to setup and use and the end result is a straight dado or dovetail groove that fits exactly..