BillNorth is the man! (and his klasse technique)

papi_jay well my car is a daily driver and since you have to give it time to bond to the paint the car will get dirty from me driving it so i have to clean it before i put on another layer of sg right?
 
Yes but why not simply give it a light wash to not worry about bonding issues ?

4 coats of SG applied 24 hours apart would last almost a year if applied properly and proper wash technique followed .

After that 4th coat top it if you like then use all the QD you like - until then I would just give it a light wash and dry
 
Papi since the weather is gonna be in the 50s when ill be putting on the SG shouldnt i give it about 4 to 5 days to bond cause it is going to be colder out doesnt it take longer to bond than in warmer temperature?
 
papi_jay said:
4 coats of SG applied 24 hours apart would last almost a year if applied properly and proper wash technique followed.
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NOT!

I've done some testing with upwards of a dozen or twenty layers of SG on the hood of my truck. In a few months, all the layers were gone. It took a while for them to start going, but once they did, they all left in pretty short order.
 
foxtrapper, how do you tell when the layers start to dissapear? and do you think its safe to use poorboys spray and wipe followed by meguiars qd between layering SG just to keep the car clean
 
tableturns said:
foxtrapper, how do you tell when the layers start to dissapear?
Click to expand...



This late spring/early summer I used a sharpie and marked layers of SG on the hood of my truck. I went up to something like a dozen or 20 layers applied back to back on one side of my hood, and I think I got as far as 6 or 9 layers spaced out daily on the other side before I got side tracked. Nothing in the center. The areas were all taped off, giving me that really cool checkerboard look. As I recall, I put a number down on top of each layer as I went. This gave me sequential numbers under multiple layers of SG. As a layer of SG disapears, the sharpie ink on top will go with it.



So I watched. I did absolutely nothing to the hood. No washing, no QD, no touch-up's. Nothing but watching.



For quite a while, nothing happened. Then the shine & numbers started to fade away. I wasn't paying close attention, but it seemed that when things went, they did it all pretty quickly. As in there wasn't much difference between the areas with just a few layers, and those with many. The old "she's holding, she's holding, she's breaking up" bit. But again, I wasn't diligently monitoring this, so hold it a little suspect.



At this point, early fall, there is absolutely no SG on the hood. Nada, zip, zero, gone. The paint is all nicely faded and chalky, rubbing off on your fingers should you wipe it.



While I didn't keep rigorous control of this test, there are a few tentative conclusions I've been able to draw from it:

1, SG doesn't last that long. A few months at best.

2, WOWO or 24 hours of waiting doesn't seem to make a difference.

3, Many layers don't last that much longer than just a few layers.



There's another person on this board doing essentially the same test. I'm curious to see their results when they are done.



As for using a QD between layers, I don't like the idea due to chemical residues and bonding. It may well be a non-issue, but the boat builder in me doesn't like anything that interferes with the bonding of layers.
 
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