Alright that's fair, suppose I was caught up by the idea of a scaling slider of "really darK stain" to "no stain" and didn't factor in that weak tannin would just simply not be dark enough to work past a point.

Dragonknight951 In my head it feels a bit off to get to black stain by applying another light coat with weak tannin. Taking your scale as a base I would say black dye and stain is 4 points, so 2 layers of strong tannin are needed, while weak tannin can only get you so far and won´t make a dark stained beam even darker.

I feel like the black ones could probably get away with being either Normal + dye, Stained + strong tannin or Dark stained + weak tannin instead of just Normal + dye or Dark stained + strong tannin. Make it a sliding scale basically.
Normal board: 0 stain points
Stained: 1 stain points
Dark stained: 2 stain points
Black: 3 stain points
1 stain point per weak tannin, 2 stain points per strong tannin(double strength both in how you make it and how it's used), 3 stain points per black dye.

thank you Rapidash It took some time for me to get back to the game/modding. Issue was found and resolved, and the size of the beams in the inventory/handbook were updates to match the others.

When interacting with the empty space under the 'created by' section in the handbook for each beam, crashes the game. 1.19.8 SP creative.