I'm stuck on 1.10.2 due to the modpack I'm using not moving on and I'm trying to put together an ender dragon mob grinder.. only when I try crafting the factory/spawner/grinder block, it simply won't do it.
I've attached a screenshot..

Weird thing is, I already made a woot spawner for blaze rods, in this same mod pack/same version/sameworld. Please help me, woot gods.

The screenshot is of a refined storage crafting GUI but I've also tried a vanilla crafting bench

Actually, disregard that, I'm dumb.
I was trying the recipe with 3 x tier 3 thingiewhatsits instead of a 1, 2 and 3... >_<