Mast joiner - for round carbon tube

Mast joiner for round carbon tube. Carbon/epoxy.

When using mast/boom spar joiners

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

Use normal 24 hours epoxy resin, thickened 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, then use solvent to clean off the excess resin from the joints. Check alignment again before allowing to fully cure.

Carbon tow wetted out with epoxy resin should be wrapped around the joined ends of the tubes for additional reinforcement in highly stressed spars.

017-080, 017-100, 017-120, 017-140.