I should have taken the time to do something like this myself but time is a real issue for me.
I field so many calls in a weeks time where bad info is given out on websites, it will make your head spin.
This says it all.
about 10 years ago i abused your stuff so bad testing you should have scars . i still have a panel up on the roof with the old epoxy on it . it's faded some but a razor blade will not break the bond . .
Here is a question for the experts. I have started a project that has had picklex applied to bare metal. ( not by me) It is of course dry and I want to remove it before applying epoxy. Since I do not have picklex would it be okay to sandblast the metal and then epoxy, or do I need to buy picklex, re wet, and scrub clean with water?
I was hoping for a a test with filler on bare metal with no epoxy. Especially the bend / fold test. You could see, on the left side where the filler wasn't crazy thick, he was able to bend the panel really far before the filler cracked. What would happen if there was no epoxy under that filler??? Of course, we all know the answer, but that might be an eye opener for some
Good stuff! A valid test!-the bond strength between the epoxy and the filler is always stronger than the filler. Where the break occurrs there's always some filler attached to the epoxy. You'll never see a clean break at the bond line when everything is done right and especially if the filler application is done within the right recoat time. Also an eye opener for those using Ospho and confirming the proper way to use the acid. I've done a lot of tests like this but usually try to wait 30 days to confirm full cure. The 24hr wait between cleaner and priming isn't needed at all though.