Zach, we use diamond dovetail bit and it takes forever to get dull. We cut our dovetail drawer boxes out of 1/2" Russian birch. When it gets dull I just send it for rebuild(re-tipping). I think I send it back once a year or something like that. All our drawer boxes are dovetail and we cut a ton of them. Works really good for us.
Where do you get the diamond bit? I also use a 1/2" Birch. If it isn't a Thermwood bit do you have to make any major adjustments to your ecab and control nesting settings?
the first one probably was. I remember Bob brought it over.
If CNC Automation has it then probably you can get from them or Thermwood. Royce Ayr makes them in Canada. I think Onsrud makes them in the States but make sure you get the right one because they have two types. Rebuilding it costs me $135 I think so I don't waste time adjusting resharpened tools.