Mast joiner - for 11 mm round

Mast joiner - for 11 mm OD x 9.8 mm ID aluminum tube, aluminium.

When using mast/boom spar joiners

Prepare alloy tubes and joiners by cleaning all matching surfaces with solvent (acetone, alcohol).

Use normal 24 hours epoxy resin – thicken as necessary to prevent the resin from draining out of poor fitting joints before curing – and ensure the parts are correctly aligned during cure.

Simplify cleaning by allowing the resin to partly cure – between 1 and 3 hours depending on temperature – and then use solvent to clean off the excess resin from the joints. Check alignment again before allowing to fully cure.

.