Discussion on "Modern foundry practice" at the Glasgow Section of the Institution

MR. MALLETT: One thing interested me was the use of moulds without boxes. It is a new practice on large work as far as I am concerned. What weight can be cast by that method? Do you tie the top to the bottom by means of a dowel or some form of print? You mention where the core was costing 20 per cent, more than hitherto, but that the ultimate casting was 15 per cent, lighter. It struck me that this would show a definite saving in the ultimate job. I should think it would more than pay for the extra cost of the core apart from achieving the designer´s object of getting a stronger bed.