Make your own porosity kit with Tim Wolf
Tim Wolf has put together a descriptive video using some detailed software, on how he made his own DIY verison of a porosity test kit. Although he says the measurements are realitively accurate, the test kit should by no means replace the ones used by the professionals. The measurements are not entirely correct for various reasons (position and traction), but makes for a close second and says it was fun to make. Tim also shows us where to obtain al lthe elements to make your own.