This stuff really works. It is mandatory
for making p-port rotor housings.

I made two test coupons out of 6061 T6 and bent them
after 24 hour cure. One was treated and one was not
treated. The JB Weld was thinned with a half teaspoon
of acetone per small tube package. The untreated aluminum
snapped apart with little or no force without bending the
coupon metal. I was able to bend the treated coupon no problem.
I'll run a shear test on the good  coupon later.

The West Systems preparation stuff is not alodine
as there is no colorization involved. I don't know
what it is but I think it is a caustic etch.

Merry Christmas.

Paul Lamar ...No rotor no motor.

No argument about the Aluminum etch. It is good stuff.  Do  you think
it is a good idea roughen  the surfaces  (housing and insert) with
sand paper before the epoxy?   That is what I did with 60 grit
paper.   Jerry


Yes I think that will help greatly. I think if you sand it
or machine it just before bonding you probably don't need the etch.
According to West Systems it takes two hours to re oxidize.