Hambige progression

No. Craftsmen do this all the time. Some of the router dovetailers
do it fairly easily.

In general it’s better to have a couple of smaller ones at the ends
and the wider ones in the middle. This gives you strength where
you need it.

I lay out the tails, cut and clean them out and use the cut tail
boards to lay out the pins. It’s not a mathematical excercise,
it’s an aethetic and workmanlike one.

when you hand cut dovetails it’s real easy to make them any size you want.. it’s harder to make them all match. i usually make mine the same size, but alter the spacing..

a trick i use on laying out dovetails is trust your eye. you can place a dovetail centered between two points by eye a lot quicker then trying to measure and get down to the 100th of an inch..

-- it's not a sickness, i can stop buying tools anytime i want