Strengthened stone and strengthened cobblestone will drop a reinforcement bar whenever they are pushed or pulled by pistons. To reproduce, just put a cobblestone block on top of a sticky piston, right-click the cobble with a reinforcement bar, and then place a lever next to the piston. Every time you pull the lever, another reinforcement bar will be dropped.
I tested this with Minecraft version 1.12 and Deadly Monsters 1.71. I only tested this in the modpack (FTB Interactions version 1.6.1-1), however, since the blocks involved are only added by Deadly Monsters and vanilla Minecraft, I figured it was safe to say this would probably work without the modpack as well.
Strengthened stone and strengthened cobblestone will drop a reinforcement bar whenever they are pushed or pulled by pistons. To reproduce, just put a cobblestone block on top of a sticky piston, right-click the cobble with a reinforcement bar, and then place a lever next to the piston. Every time you pull the lever, another reinforcement bar will be dropped.
I tested this with Minecraft version 1.12 and Deadly Monsters 1.71. I only tested this in the modpack (FTB Interactions version 1.6.1-1), however, since the blocks involved are only added by Deadly Monsters and vanilla Minecraft, I figured it was safe to say this would probably work without the modpack as well.