Quote:
Originally Posted by red-beard
If you are going to have one milled from plate, there are shops that can use an imager to make an exact duplicate, except for finish.
Maker sure you use 5052 Aluminum, which is one of the most marine resistant alloys. 6061 plate is a bit stronger, and nearly as marine resistant. Either should work fine.
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I forgot - 6063-T6 or 6005-T6 could be a good choices as well - They are marine grade. We build offshore helicopter landing pads out of 6061-T6