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SLONG1958
I'm a big fan of spi epoxy primer but has anybody ever painted aluminum or stainless with it. I've got a 72 nova that I'm wanting to Black out all the chrome and stainless.
Thanks
Thanks
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Bob Hollinshead
Most people that do that to their trim regret it down the road. You can epoxy any kind of metal as long as it's been sanded or blasted for texture and cleaned well. Works fine.
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TurboTx
Bob is spot-on. I shoot epoxy on aluminum more than any other metal and I typically just toss it in the blaster first. If you're going to sand your pieces instead, they recommend 80 grit. I use recycled glass in the blaster (broken bottles bits and pieces) and it's rated at 70 grit if I remember. However, I only blast enough to dull the aluminum and I keep it moving very quickly because a lot of what I shoot is only 20 thousandths thick. The epoxy primer bites great and you won't have any issues with it letting go.
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TurboTx
Bob is spot-on. I shoot epoxy on aluminum more than any other metal and I typically just toss it in the blaster first. I use recycled glass in the blaster (the multi colored broken bottle bits and pieces) because it's supposedly cleaner, tremendously cheaper than AL Oxide, and it's rated at 70 grit if I remember. However, I only blast enough to dull the aluminum and I keep it moving very quickly because a lot of what I shoot is only 20 thousandths thick.
If you're going to sand your pieces instead, they recommend 80 grit. Personally, I will typically go 80-120 on Aluminum depending on the grade. THE ONLY exception to using heavier grits that I have run into is on DEAD-0, or annealed aluminums which can be extremely soft and almost "smear" when you try and rough them up. Just give those materials enough scuff to equal what the course grits would on hardened aluminums. The epoxy primer bites great and you won't have any issues with it letting go.
If you're going to sand your pieces instead, they recommend 80 grit. Personally, I will typically go 80-120 on Aluminum depending on the grade. THE ONLY exception to using heavier grits that I have run into is on DEAD-0, or annealed aluminums which can be extremely soft and almost "smear" when you try and rough them up. Just give those materials enough scuff to equal what the course grits would on hardened aluminums. The epoxy primer bites great and you won't have any issues with it letting go.
S
SLONG1958
Thanks for the help.