I understand some are using wood. But I would think the bees would prefer wax.
I took a deep foundation, lay it on a hard surface. Use a wedge that comes off the frame for measure.
cut the strip the width of the wedge. Which is 1/2 inch.
Put on the foundation, up and down, not the length. sharp knife. the 2 strip fits from end bar to end
bar with about the width of one cell lap over in the middle.
You can get enough strips for over 30 frames. Install with wedge same as you would a full piece of foundation. No gluing. some may consider it time consuming, could be for many, many hives.
what I did :)doak