While I was waiting for new H/S parts from Vans, I thought I'd try an experiment. It's going to get cold next week, and my garage is unheated, so priming will be problematic if I have to wait for perfect conditions. I went ahead and deburred/edge finished all the ribs and aft spar components parts for the L/H half of the H/S before match drilling & dimpling.

I'm using Tempo self etching zinc phosphate primer in a rattle can and all the spec sheet really says is that the bare metal should be clean, the can should be between 50-90 degrees when spraying, that you can handle in 1/2 hour, top coat in 24 hours & that it's 100% hard in 48 hours. My garage was about 50 degrees when I shot this, and I cleaned the surface by wiping down with acetone. I shot these parts before they've been match drilled or dimpled, because I'm interested to see if this stuff gets tough enough to handle a dimple die.

It was dry to the touch within about 20 minutes, but it got down into the 30's overnight and the next day it really didn't seem like it was very hard. I brought the parts inside, hid them in the hall bath and opened the heat register all the way. When the furnace kicks on, it heats that tiny room to about 80 degrees, so I'm going to see how durable this stuff is after baking a couple of days.