What Materials are Used to Create BobsCNC Routers? Bob Wood September 12, 2018 18:30 Updated Follow Our CNC router frames are made from 6 mm 5 ply Baltic birch. The spoil-board is 1/2" MDF. Related articles Can you Make Signs longer than 17" in Multiple Steps with the E3 CNC Router? What software is needed to run BobsCNC Routers? How are projects clamped on the table bed? Is the Controller a 2-1/2 or 3-Axis? How thick of material can the E3 and E4 CNC Router cut through? Comments 0 comments Please sign in to leave a comment.