Someone at a meeting of our woodworking club mentioned these sometime last year. They are perfect for luthiers in that a) they come in lengths sufficient to route a solid body in a single pass, b) they have both top and bottom guide bearings so you don't have to move your template from one side of the stock to the other when flipping the body over to keep to non-climbing cuts to prevent blowout c) the carbide inserts are oriented so as to provide a shear cut
away from the edges toward the center of the stock, and d) they are much cheaper than just about anything comparable from vendors like Freud, Amana and Whiteside.
The one I'm referring to is the 06-693, 1/2" shank, 3/4" diameter, 2" cutter height, overall height of 4 1/4", which sells for $70.
It gives a beautifully smooth cut, maybe a little less prone to burning on end-grain and very convenient to use with the upper and lower guide bearings.
Available from Infinity Cutting Tools here:
https://www.infinitytools.com/routing/r ... outer-bits
