At 1:24 scale the planks/strakes that were used in the original (approx 10 inches wide by 1 inch thick) scale to approximately 10mm x 1mm. I’m using beech ply for the strakes as it’s both flexible and relatively tough.
To aid in cutting the basic planks that will act as a starting point for forming the strakes I have modified a design of a tool that was created for cutting balsa planks. Desiging and 3D printing the tool has allowed me to accurately cut planks from sheet ply.
I’ve published my design for the tool here…
https://www.thingiverse.com/thing:4255410
Where it can be downloaded and 3D printed. A video of the tool in operation can be seen below…