3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact and Fatigue Resistant, Maintains Bond Strength, 50 mL 1.69 fl oz Duo-Pak

I am a sculptor and work with aluminum. The models I create are too small to weld even if I could weld aluminum! In the past, using two part epoxies that I had to mix out of two tubes that never dispensed their contents evenly, the process was quite messy. Trying to apply the mix with spatulas and sticks required lots of masking tape and time. The 3M DP420 has been a godsend. The two parts mix evenly, the applicator gives good control in dispensing the adhesive mix and best of all I have found I do not need to use that much masking tape. The 20 minutes setting time allows repositioning and as the epoxy starts to set you can shave whatever excess adhesive there is and clean up with solvent. This opens up a lot of possibilities for my work.

Really a amazing product, I have used this to glue aluminium stringers into a race boat hull instead of welding, after 4 years of use, ZERO problems. We also have repaired intake ports with it as well as water pumps, both subject to very high stress and various chemicals, it holds fast no matter what. All in all a great product, and works very well with carbon fiber weave as a binder.