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The air hose and viewing hole. The hose connects to the vacuum the end of the pipe (bottom right corner of the photo) has clear glass as a fitting. It can also be unscrewed so the pipe can be rodded out whenever it was blocked. The pipe extended 5 cm into the body of the smelter. There is a mark visible on the pipe which is 15 cm from the end. Previous Report Next Text © Neil Peterson, 2017 Photographs © Neil Peterson, 2017 Copyright details Contact us |