dtaranath - be sure to convert the bulkhead hole to mm to get the correct hole saw size. Bulkheads require different hole sizes based on the manufacturer. My original order for hole saws was incorrect due to not taking this into account. For instance, a 1 inch bulkhead requiring a 1 7/8 inch hole is equivalant to 47.625mm. One inch equals 25.4mm. I would test drill in scrap glass and try the bulkhead for fit or at least compare the bulkhead with the actual hole saw before drilling. I just got the three bulkhead sizes I will be using and the new hole saws I ordered from Lau should arrive tomorrow or soon after. My 130 and 300 will soon have holes in them.
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