I need to pass some bolts through a couple of pieces of plywood that will sandwich 3M 5200. I need to be able to remove the bolts at a future date. What should I put on the bolts to make sure any adhesive that might get squeezed onto or into the bolts holes won't stick and make them impossible to remove? Graphite anti-seize? Light oil? My question is a bit obtuse on purpose so as to ensure focus...I don't want to start a debate about using 5200. LOL
More info....On my 1980 C22, I'm updating the chainplates as per the OEM recommendation made in the mid-1980s. Part of the improvement is to add a "stringer" or bulkhead that will connect the chainplates to the hull. Per Catalina instructions, the new 3/4" bulkhead should have 3M 5200 on the edges where it abuts the hull and where it sits flat against the fiberglass liner. The chainplate is then connected by adding a stainless strap that is bolted through the OEM bulkhead and the new bulkhead. I'm at the point where all the pieces are cut and fitted, including the bolts. It looks like it really will beef up the original design considerably. I'm planning to use the chainplate bolts to clamp the "glue joint" where the new bulkhead meets the old and the liner, using 5200 as recommended. The new bulkhead is permanent but the old bulkhead and chainplates need to be removable, hence my concern about 5200 sticking to the bolts. I'll be careful to keep the stuff back from the bolts a bit but thought putting something on the bolts to ensure non-stick might be a good idea. The attached pic shows the OEM bulkhead, the OEM chainplate with a new extended T-strap drilled and ready to be bolted across the bottom. Those bolts sandwich the OEM bulkhead, fiberglass liner and new bulkhead (underneath & out of view). Keeping the glued joint clamped during curing will make the strongest joint.
More info....On my 1980 C22, I'm updating the chainplates as per the OEM recommendation made in the mid-1980s. Part of the improvement is to add a "stringer" or bulkhead that will connect the chainplates to the hull. Per Catalina instructions, the new 3/4" bulkhead should have 3M 5200 on the edges where it abuts the hull and where it sits flat against the fiberglass liner. The chainplate is then connected by adding a stainless strap that is bolted through the OEM bulkhead and the new bulkhead. I'm at the point where all the pieces are cut and fitted, including the bolts. It looks like it really will beef up the original design considerably. I'm planning to use the chainplate bolts to clamp the "glue joint" where the new bulkhead meets the old and the liner, using 5200 as recommended. The new bulkhead is permanent but the old bulkhead and chainplates need to be removable, hence my concern about 5200 sticking to the bolts. I'll be careful to keep the stuff back from the bolts a bit but thought putting something on the bolts to ensure non-stick might be a good idea. The attached pic shows the OEM bulkhead, the OEM chainplate with a new extended T-strap drilled and ready to be bolted across the bottom. Those bolts sandwich the OEM bulkhead, fiberglass liner and new bulkhead (underneath & out of view). Keeping the glued joint clamped during curing will make the strongest joint.
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