Chainplate drilling

[benz]

Thanks, Renoir...good nutshell reply.
Douglas, I got my pintles and gudgeons from P T foundry, and the price of that convinced me to buy stock and make the rest of the fittings myself. I don't have to worry about matching holes, since the boat is new and has no holes at all yet. I just have to worry about getting the chainplates in the right spot...
I paid $9.50 per pound for the Silicon Bronze plate from Atlas Metals. The 22x48x3/8 plate weighs 125 lbs, so it was quite steep. I ordered some other stock from them at the same time, (1/4" plate and 3/4" rod) to save on shipping, I just hope I bought enough so I don't have to ever again.
Mind if I ask the width of your chainplates, and how many bolts each?
Best,
Ben