What autopians like to use.

budman3 said:
Again, untrue.



From:

Porter-Cable Car Polisher / Sander Facts



"If you change the pad size you must also change the counterweight or suffer unnecessary vibration and possible damage to the tool."



"There are two different counter-weights which are clearly marked to indicate use with either the 5" or 6" backing pad"



You use a 6" backing plate with the LC 7.5" pads and need a 6" counter weight to compensate for that.



While I'm *not* going to argue with you I speak from *MY* experience as well as the experience of others. There simply isn't a difference between the two weights and vibration in the machine.
 
This has veered a bit off topic...but anyhow, it seems experiences vary with regard to all this stuff so you can only put so much stock in the experiences of others. Yeah, that's a disclaimer ;)



I too find the PC ineffective with larger pads. For serious correction, especially on hard clear, I use 4" pads and they work much better for me. For more gentle work I use 5-6.5" ones. I reserve larger pads for the rotary.



I've used both counterweights with all sizes of pads from 4" to 7.5" (and I even played around with some larger Meg's pads). In *my* experience the larger counterweight results in less vibration, especially when mated with light backing plates; lightest combo = least vibration. Many years of use with the larger counterweight has not damaged either of my PCs. FWIW, using my older one with the smaller counterweight (and a 5" backing plate and the old smaller-than-today's pads), the PC required rebuilding after maybe three years; I have no idea whether the counterweight had anything to do with this or not but I'd guess not. I never used the larger counterweight until I got my second PC, which came with the 6" weight. I noticed less vibration so I equipped my other PC with that weight too. It's been over a decade since then and both PCs are still working fine.



As Spoiledman tried to explain, the PC is designed to work with a backing plate that has *one sheet of sandpaper* stuck to it. A foam pad, let alone one saturated with product, weighs more than a single sheet of sandpaper- if you don't believe me get some and see for yourself. So we're *really* using the PC in a way for which it *was not originally designed*, we're putting more weight and, more importantly, more surface area/friction into the mix. Also, note that when sanding you don't apply pressure, you let the sandpaper do the work, but most people apply some pressure when they polish vehicles with the PC. All these factors combine to make for one mighty outside-the-box situation, relative to the original *intended* application. It's not like PC redesigned their sander when they realized that people were using it to polish cars ;)
 
Prima Swirl, Menz 91L, Blackfire SRC 3000 (Menz), Sonus SFX 1 and 2

Prima kicks menzerna's butt IMO



Got out with an edge green what I needed a yellow to do with menz,the finish was way better with the prima and you can use any grade of foam pad with swirl to finish as well if you wanted too



Severe swirls - sfx 1 and orange sonus DAS on a rotary will annihilate them and scratches too.
 
For the PC, a 60/30 mix of Menzerna IP and OP seems to be a decent all purpose polish. Finishes down fairly well for a one step, and you can always refine it mroe with FPII/OP and a polishing pad if need be.



For the rotary, I've been getting amazing results with a 50/50 mix of HTEC/OP. Cuts amazingly for swirl removal and some heavier marring while finishing down almost perfect. Follow up with OP, FPII/OP or ZPC if need be.
 
Sure opinions may vary but swirl truly gives me a fresh off the gun finish. I don't know why anyone would doubt that it would not be as good as others.

Why would anyone think it's not up to the job. So it's not made by menzerna or optimum, big deal.
 
SVR said:
Sure opinions may vary but swirl truly gives me a fresh off the gun finish. I don't know why anyone would doubt that it would not be as good as others.

Why would anyone think it's not up to the job. So it's not made by menzerna or optimum, big deal.

Have you tried Prima Cut?...If so, what is you opinon of it?
 
Hey no doubting that. Nothing wrong with optimum at all. I've got the old formula or both HC and OP



Have not tried cut or finish yet, just swirl
 
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