Simplicity - Production and Inventory Holding

In reality this is the whole module, any other length is simply adding more of the same thing.

What this means is that as far as production molds are concerned a way can be devised that will allow for adding modules to create longer blocks.

For inventory holding and ease of use a 1000mm long block (4 modules) should be produced. This can be cut in the field to give any of 4 different sizes. A 1000mm block will give the greatest stability as there will be an overlap of two modules on either side.

For production there are no small vertical edges as the keys are tapered which will allow for easier production as there will be less sticking. Only the outer sides of 250mm by 200mm and 150mm by 200mm on the inner voids are vertical.