I figured it out -- it's because our wood is missing the [ITEMS_HARD] tag, which is what allows it to be made into the various types of crafts.
My guess is that, when you tag something with [WOOD] but not [ITEMS_HARD] (or any other similar tags) and try to make crafts from it, the game loops through the list of
item types and tries to find an allowed type of craft. But since it can't find any, it runs off the end of the crafts section (which ends with type 42, BRACELET) and onto the next item type in the list, number 43, GEM.
Anyway, I'd suggest creating the following new material template, and making all wood materials use it:
material_template_wood_vyznev
[OBJECT:MATERIAL_TEMPLATE]
Wood template, based on Halfling's plant structure template, with tags
that allow it to be used for crafts and stuff.
[MATERIAL_TEMPLATE:WOOD_VYZ]
[MATERIAL_VALUE:1]
[STATE_COLOR:ALL_SOLID:BROWN]
[STATE_NAME_ADJ:ALL_SOLID:wood]
[STATE_COLOR:LIQUID:BROWN]
[STATE_NAME_ADJ:LIQUID:wood pulp]
[STATE_COLOR:GAS:BROWN]
[STATE_NAME:GAS:ashes]
[STATE_ADJ:GAS:ash]
[DISPLAY_COLOR:6:0:0]
This stuff is from Halfling's plant structure template:
[SPEC_HEAT:3000]
[IGNITE_POINT:10300] lowered for fun
[MELTING_POINT:12000]
[BOILING_POINT:15000]
[HEATDAM_POINT:10200]
[COLDDAM_POINT:9950]
[SOLID_DENSITY:1200]
[LIQUID_DENSITY:NONE]
[IMPACT_YIELD:10000] here i again went with vanilla values
[IMPACT_FRACTURE:10000]
[IMPACT_STRAIN_AT_YIELD:1000]
[COMPRESSIVE_YIELD:10000]
[COMPRESSIVE_FRACTURE:10000]
[COMPRESSIVE_STRAIN_AT_YIELD:1000]
[TENSILE_YIELD:10000]
[TENSILE_FRACTURE:10000]
[TENSILE_STRAIN_AT_YIELD:1000]
[TORSION_YIELD:10000]
[TORSION_FRACTURE:10000]
[TORSION_STRAIN_AT_YIELD:1000]
[SHEAR_YIELD:40000]
[SHEAR_FRACTURE:40000]
[SHEAR_STRAIN_AT_YIELD:1000]
[BENDING_YIELD:10000]
[BENDING_FRACTURE:10000]
[BENDING_STRAIN_AT_YIELD:1000]
[MAX_EDGE:1000]
[ABSORPTION:0]
Added the following tags based on the vanilla DF wood template:
[ITEMS_HARD]
[ITEMS_WEAPON]
[ITEMS_WEAPON_RANGED]
[ITEMS_AMMO]
[ITEMS_ARMOR]
[ITEMS_SIEGE_ENGINE]
[WOOD]
This also lets us get rid of the individual [WOOD] tags inside the specific wood material definitions.
Any objections?