Can I use SH on the face of this mail box? It appears to have an either brass or bronze finish. Because of that, I would think no, but I wanted to hear your thoughts.
Looks like antique brass so may not hurt, but to be safe I’d tape it or vasoline it. That would be expensive and a pita to replace.
I actually found the link to them here: Classic Faceplate Mailbox
use a pump up for better control as well
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Good idea on using the pump up
Doesn’t look like it needs SH, just medium pressure on the concrete parts. Don’t use pressure on that brick, it’s been my experience the finish comes off easily. Maybe a 600psi or less if that.
