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I am a complete novice on metalworking and painting, but have been hobby wrenching since I was a kid. I am in the process of restoring a rusty Scout II. The frame is fully boxed on the sides and front (front cross-member not removable), but the rear two horns are open due to removing and fabbing a new cross-member. There are several holes in the frame for very minimal access.
I had planned on having the frame hot-dipped galvanized by a local shop for $250. My thought process was that it would get all of the rust out of the inside and nooks and crannies and lay down protection inside and out. Further, that it is pretty inexpensive relative to the time and materials that I would otherwise expend. In going this route, is there a way to coat the outside? Mainly for looks, but also some protection for the zinc (reportedly slowing the zinc oxidation). I have spent many hours searching on this subject and have gotten nowhere. Some say all paint will flake off of galvanized due to saponification, that latex paint will hold (here is my skeptical face), you have to prep it a certain way, etc. Right now, I am leaning toward leaving it bare galvanized.
After talking to SPI customer service (awesome guys, by the way), I am researching epoxy primer for the frame and skipping the galvanizing. The outside is pretty straightforward. However, there is no way that I can do any meaningful prep on the inside. Heck, there are acorns and leaves in there that will take some serious gymnastics to remove. I would think the best I could do is a mere wiping down, but leave any surface rust.
Should I look at trying to get SPI epoxy on the inside with either a DIY wand sprayer or sponge-on-a-string on effectively unprepped metal? Or, maybe that Eastwood internal frame coating? Cost is pretty high on the Eastwood, but it is supposed to be usable over unprepped metal. I fully realize that the Eastwood product is nowhere near as good as SPI epoxy on a properly prepped surface. But, is SPI epoxy on a completely unprepped surface a waste of time and materials?
Thank you very much in advance for any help.
I had planned on having the frame hot-dipped galvanized by a local shop for $250. My thought process was that it would get all of the rust out of the inside and nooks and crannies and lay down protection inside and out. Further, that it is pretty inexpensive relative to the time and materials that I would otherwise expend. In going this route, is there a way to coat the outside? Mainly for looks, but also some protection for the zinc (reportedly slowing the zinc oxidation). I have spent many hours searching on this subject and have gotten nowhere. Some say all paint will flake off of galvanized due to saponification, that latex paint will hold (here is my skeptical face), you have to prep it a certain way, etc. Right now, I am leaning toward leaving it bare galvanized.
After talking to SPI customer service (awesome guys, by the way), I am researching epoxy primer for the frame and skipping the galvanizing. The outside is pretty straightforward. However, there is no way that I can do any meaningful prep on the inside. Heck, there are acorns and leaves in there that will take some serious gymnastics to remove. I would think the best I could do is a mere wiping down, but leave any surface rust.
Should I look at trying to get SPI epoxy on the inside with either a DIY wand sprayer or sponge-on-a-string on effectively unprepped metal? Or, maybe that Eastwood internal frame coating? Cost is pretty high on the Eastwood, but it is supposed to be usable over unprepped metal. I fully realize that the Eastwood product is nowhere near as good as SPI epoxy on a properly prepped surface. But, is SPI epoxy on a completely unprepped surface a waste of time and materials?
Thank you very much in advance for any help.
