Flattening transom skin before installing core.

[captsuperfly]

Originally Posted by Capt Terry

I may not have kept in the loop about how you are using carriage bolts. If you intend to remove them and it sounds like it because you are taping and waxing them, you are loosing the ability to rotate them to make removal easier. When I used the plywood on the brace my aft sheet for my Seacast pour I through bolted from the plywood thru to the fwd fiberglass with slightly smaller hex head bolts through the engine mount holes with flat washers and rubber washers to prevent seepage. Also waxed the hex bolts. But rotating the bolts as well as tapping on them aided removal.

To be clear, this is just my solution for the glass I'm adding to the skin. I'll thru-bolt again with 2X4 or angle iron braces when I install the core.

I used the carriage bolts because they have a larger lip but very low profile so they gripped the skin nicely but will make a smaller bubble when I glass over them.

My Once everything cures, I my plan is to grind the bit of glass off the heads of the bolts and hopefully I can twist them free and pop them out. If I can't, I have a plug cutter that can cut them out. Either way I'll need to repair the holes but they are small. I'll likely use the same holes to thru bolt through the core once I set that.