Tony, I will be wishing you the best of luck and result.
From what I read a flux formulated for aluminum can reduce the time needed for the solder to adhere.
This is what was recommended and what I ordered:
This is copy from the sellers website. I got the paste version. They offer liquid, gel and paste. I think paste would be best for aluminum and its quick oxidation.
SUPERIOR NO.1260
Aluminum Soldering Flux Gel
High Activity, Chloride-free, Organic-Based
Effective in joining aluminum to aluminum and aluminum
to most ferrous and non-ferrous alloys,
including some grades of stainless steel**.
Active 350 - 550 deg. F (177 - 288 deg. C)
Clean up with hot water
See Spec Sheet for more information
Excellent for soldering LiPoly Cells
or other cells with Aluminum tabs.
Note: Great care must be taken when working
with any type of battery (Disclaimer)
Use with 91/9 Tin/Zinc Solder for Aluminum
Use with 96/4 Tin/Silver Solder for other metals
Great for repairing cast RR cars and engine chassis
** For Soldering Stainless Steel, not aluminum, and other difficult
to solder metals, See Superior No.71 or Superior No.78.
We recommend using solid wire solder with this flux,
this will give a stronger and cleaner joint.
This flux can only be shipped to US and Canada.
Why they cannot ship it elsewhere is not explained. There might be a distributor in other countries which would explain this as a territory issue.
The manufacturers website:
http://www.superiorflux.com/aluminum_so ... _flux.html
I had read a few recommendations for this product BEFORE I started looking from whom I could buy it.
At the manufacturers website there is a place where you can ask about non-USA/Canada distribution.
Should have retained the links to those recommendations but I did not.
Wonder if I should get some tin/zinc solder? Meant to do that and forgot. any thoughts?