Originally Posted By: strat81
Meguiar's Ultimate Compound. Wal-mart usually has it.
The name is somewhat deceiving, as it does not have the cut of a typical compound, IMO. I applied it with a MF bonnet on a pad and did not have to use a finer polish to remove any hazing. I was able to go straight to a LSP after using.
I'd consider it a medium cut product. IOW, it's great for a car that was been maintained, but not outright neglected or abused. It's also unnecessary for paint in excellent condition.
Personally, if I needed something more aggressive than Ultimate Compound applied with a 7424, I'd step up to a rotary.
I was kinda underwhelmed with the results of using it, not because the results were bad, but because there was so much hype surrounding the product. It performs as advertised, not as hyped.
Ultimate Compound has a lot of cut. Don't let the fine finish it leaves on the first pass fool you. This is SMAT based abrasives. Even on a very fast first pass it won't leave the hazing and scratches a traditional rocks in a bottle compound would leave but it doesn't mean it's not removing quite a bit of material.
Anything that can take out 2000 grit wet sanding haze is very aggressive. SMAT abrasive is designed to work differently in that it doesn't break down so you never will get the initial hazing but as long as it's being worked it will continuously cut into the paint and in fact overworking Ultimate Compound will eventually see the finish quality degrade not refine unlike traditional diminishing abrasives where the longer you work the finer the finish. So overwork Ultimate Compound at your own risk.
Originally Posted By: razel
My information is old, but I think Ultimate Compound and Polish were introduced after M105/205. Unless M105/205 was updated in the past 2-3 years then I guess the M105/205s got the new formula. I believe the primary difference between the Ultimates and M105/205 is the lattter are body shop safe. I'm not sure if that mean's it's OSHA or new paint compliant or longer working times for rotarys, all of the above... none of the above?
The Ultimate Lineup is basically an OTC amateur friendly version of M105 and M205. It has extra lubricant added. My own informal analysis at my lab at work showed me that Ultimate Compound is a mix of diminishing and SMAT abrasives designed to break down to final finish extremely fast while offering very aggressive cutting for the first few initial passes before breaking down the diminishing abrasives and working solely using the high lubrication and SMAT formula. But Ultimate Polish is basically just M205 with even more lubricant.
But like I said Ultimate Compound is far from a light polish. When used with a machine it's as aggressive as most decent compounds, it just finishes much better which does fool people. So don't use Ultimate Compound as a seasonal polish. That's living quite dangerously.