- Oct 18, 2003
- Saline Michigan
Solution to ... what? I can not tell what you are addressing.I did read about chemical etching of aluminium tube for some ultralights. Maybe this could be a solution ?
Aluminum really wants to go back to bauxite. Etch aluminum with a mild acid and let the air see it for even seconds and the surface layer of aluminum atoms have grabbed oxygen, and the oxidation will then proceed further. Alodine works because it dissolves off the aluminum oxide and forms a new compound on the surface atoms simultaneously. Paint sticks well to alodined aluminum, but durable high strength bonding does not. Factory methods exist for durable aluminum bonding, but AFAIK they involve processes and materials that have not found safe ways to migrate into our home shops.
When safe durable bonding processes do migrate to home shops, it will enlarge aluminum construction.