I dont know if its a bug or anything else but when I started crafting the things to do a new pump, using NEI, I couldnt see the recipe of the iron gear, so I thought it was a bug and tried to craft normally, remembering de recipe, it doesnt work. Wooden and stone gear works normally but iron and gold has no recipe, and the strange thing is that crafting diamond gear it appears the recipe. This is a bug or something else that sometimes has conflict to other mods?

BuildCraft version: 7.99.17
Forge version: 14.23.3.2655
Link to crash report or log:
Singleplayer or multiplayer: Singleplayer
Steps to reproduce:
Additional information:

this would be another mod messing with the recipes, are you playing with sevtech ages pack? if so it's probably gated

otherwise mods like crafttweaker can change/remove recipes and are often used in modpacks

No Ive just built a modpack to play in minecraft version 1.12 and the gears does not appears, but really thx about craftweaker I'll use it to fix my problems