Tempo A-702 Prep
With much excitement I have finally purchased a full set of tools from a builder who sadly cannot build any longer. I hope to put them to good use, and will soon be ordering some practice kits, and hopefully an empennage next Fall or early 2022.
Because frankly I cannot afford to build a plan, if I am honest, I plan to spread the build over a very long period of time. Like many others who dream big but don't have the wallets to support it, I have done an immense amount of research on every topic I can and have planned out as much as I can.
On that note, I am heavily leaning toward priming with Tempo A-702 zinc phosphate spray cans, as I will only be priming small amounts spread over long periods of time (years probably). Everything I have read and seen indicates it only needs clean, dry aluminum.
1. However, I am assuming it is still prudent to do the same prep everyone describes for other primers to remove any grease or dirt, right?
2. Does anyone with experience know if it is necessary to clear with alumiprep then acetone, or just acetone?
Because my build will be spread over years, I am concerned about protecting from corrosion or damage in storage and therefore would like to paint or at least prime the outside skins / surface as I go. For example, my empennage pieces may become living room conversation pieces for several years before they become affixed to a fuselage.
3. I have noticed no one primes both sides of the skins before assembly - is there a reason for this other than potentially scratching it up during riveting?
4. Would it be better to assemble components and then spray a whole piece, like the horizonal stab, with primer?
5. I have also seen people say that for painting the plane they don't prime underneath the paint, presumably to save weight - would paint alone be adequate protection?
Thanks very much!
Mike