3 / 6
Particleboard Core
Particleboard core is the least expensive option. Like MDF core, it’s flat and stable with consistent thickness. But particleboard core options are worse in the screw holding category. Also, it’s a special-order product, at least from my lumber yard, whereas MDF core is readily available.
4 / 6
Combination Core
Combination core weds the best attributes of MDF core and veneer core. The center cores are cross banded hardwood, providing strength, light weight and screw-holding capability. The outer cores are MDF, giving a flat, uniform surface for the face veneers.
However, combination core is a compromise. It lacks the screw-holding capability and rigidity of veneer core, or the flatness and stability of MDF core.
The Family Handyman DIY expert, Spike Carlsen, will show you how to cut construction grade plywood and finish grade plywood with a circular saw.
5 / 6
Lumber Core
Lumber core consists of edge-glued strips of wood, usually basswood. On both sides of the core there’s a cross banded veneer, then the face veneer. Like veneer core, it has excellent screw holding capability, strength and rigidity. But it’s considerably more expensive and harder to find than veneer core, so I almost never use it. However, it’s a good choice for long shelves.
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