Yesterday, the new filter separator module was created using 4 layers of 18mm OSB board with a large circle cut out in a increasing diameter at a sloping angle. Then an inlet 50mm hole was drilled at the tangent of these circular chamber so the air would come in and fly around the circle and make the rubbish to be flung outwards and downwards into the main rubbish collection area. A pipe up the middle of the lid would extract the air, being pulled by the motor unit and second filter chamber.
Then this morning, the final hook up job was done to connect the pipework to the new second generation of the filtering unit that we copied off the web. It seems to be working quite well but after doing a major clean up around the whole workshop, the amount of dust in the paper filters was quite significant and was reducing the power of the air flow. This is a disappointing result and we need to go back to the drawing board. But at least, it is working as a vacuum system so we will use it for now and will have to empty the second chamber more often.