I bought two of his cartridge boxes and thought they were well made. Put them on a shelf in the basement for a while. When I wanted to load the boxes, it was impossible to slide the wood out.......humidity. I put them in the microwave at a low setting for a brief time, repeated until I was able to slide the wood out, although with difficulty. After getting the wood out, I did as you all did and sanded the wood until it was just a good fit.