For bonding aluminum to dissimilar surfaces with different coefficients of thermal expansion consider toughened 737.
Sanding aluminum sheet.
Begin sanding with a medium grit sandpaper and work your way up to finer sandpaper.
Single component epoxies are ideal for bonding aluminum.
For very high strength use a metal bonder such as 170 or the original 910.
Sanding aluminum can create oxide dust or a combustible dust cloud that can explode if overheated.
After spraying the aluminum with alumicut lubricant they waste no time sanding down the aluminum sheet.
Combustible dust clouds are difficult to put out with water.
For example a metal worker using a dry dust collector can suffer serious injury while sanding aluminum parts if the collector s steel blower explodes on the dirty side of its filter.
Starting off with a 220 grit sandpaper the team works slowly but surely over the aluminum sheet.
Always use cotton flannel sheets on tanks and flat surfaces any other surface plain cotton.
Sanding by hand works well for woodworking and finishing especially for giving surfaces a lighter touch.
Sanding can be done by hand as well as in tandem with power tools such as electric sanders to create the best finishes on these materials.
They don t spend too much time sanding one portion of the metal to avoid producing divots while at the same time making sure all the areas of the aluminum get an even sanding.
Consider es550 or es558.
All grades will bond aluminum well.
You want to use a liquid metal polish i use pro 40 and white diamond those are the 2 that i ve found give the best finish and shine.
Sand the sheet metal.
While it s possible to sand the aluminum by hand using a sanding machine will make your job incredibly easier.
Sanding is not only useful but can make all the difference in a woodworking metal or drywall project.