tom p. said:
Would a heavier wax, like 1Grand's Blitz, work well in this application? I am still trying to get my arms around this process. Seems like everyone has a slightly different "angle" on it.
Also, I'd think this would be an ideal application (light, uniform pressure) for the PC + finishing pad. No?? If you have to make multiple passes on a panel, the PC would be a benefit.
As you noted, everybody has their own take on this.
I tried to do some none-too-scientific experimenting but I didn't get any cut and dried results (heh heh, must not've been scientific enough

). Next time I do it (note to self...) I'll try to remember to do something with a little control and documentation. A few random observations follow:
Looks-wise, spitshining Souveran with CM seems to have the greatest effect. I could definitely see a difference when I spitshined a few applications of Souveran on top of Collinite 476S on the light blue Volvo, and others could spot it too.
The spitshining mentioned from here on was done with the Cyclo and Griot's Speed Shine. Note that the Cyclo is a rather aggressive way to apply wax and that the Speed Shine might have some solvent action greater than distilled water would have (but it does contain carnauba).
The heavy waxes (#16 and Colinite 476S) seem less fragile so I dunno if the spitshining is as necessary for layering to take place. Seems that with something like Souveran it's more important to *not* disturb the previous application. But spitshining the heavy waxes did have some subtle effects.
Spitshining heavy waxes seems to allow a greater "working" of the wax before it hazes, especially when doing it by machine. I was surprised to see that this resulted in differences in beading characteristics, as if the additional working time further "burnished" the surface (or the wax on the surface) a little bit. If it resulted in anything looks-wise I didn't spot it (on silver) nor did I *feel* any difference (which didn't surprise me; everything just felt freshly waxed).
Doing half the trunk lid with #16/speedshine/Cyclo and the other half regular (non spit shine but still on/off via Cyclo) resulted in the beads on the spit-shined side being a little larger and *much* more spherical, like they were just *barely* contacting the surface of the panel. They also seemed to roll off a bit better. Any differences were no longer apparent after two washes. I did not discern any differences in durability.
Much as I liked doing it, I dunno if spitshining via machine is necessarily the way to go due to the possibility of disturbing the previous application. I'd at least be *very* gentle, using the PC with a very soft finishing pad. Using the Cyclo with the white finishing pads seemed a little aggressive. But that's a purely subjective opinon and it's not like it resulted in any noticeable durability issues so :nixweiss