Mod Version: architecturecraft-1.12-3.98.jar
Chisel Version: Chisel-MC1.12.2-1.0.2.45.jar
CTM Version: CTM-MC1.12.2-1.0.2.31.jar
Minecraft Version: 1.12.2
Forge Version: 14.23.5.2854
Crash Report: N/A
Modpack: https://www.curseforge.com/minecraft/modpacks/breaking-things

The bench doesn't seem to work on a specific subset of the Factory blocks from Chisel. Specifically "chisel:technical1" with all meta versions of the block.

You place the block in the bench and no output appears. It works for other factory blocks, laboratory blocks, and other blocks from chisel, just not those specific ones.

We'll look into it, thanks for the report.