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AndyN01 · 4th July 2022, 07:53

I don't think Meguiar UC is 300 grit - that's seriously rough. It's the sort of grade to rip off everything, quickly.

https://www.meguiars.co.uk/product/u...ompound-450ml/

Here's a reply from Meguiar's Inc from 2013........Re: Where is Ultimate Compound on the Abrasiveness Scale?

We don't rate our consumer products with a cut scale like we do with our Mirror Glaze pro line because it actually causes more confusion with the general public. In all honesty, it would probably scare the heck out of many them too, as the average guy on the street just isn't all that savvy about paint care. Since UC is derived directly from M105 and uses essentially the same abrasive set, it can and will cut very quickly. But those abrasives allow it cut like that without scouring the paint (unless you're dealing with super soft and delicate paint, in which case any heavy cutting compound or aggressive pad will haze it). Further, the cut scale on the Mirror Glaze products indicates the amount of cut each product gives when used in it's most commonly used process. So while M105 may be a 12 when used with a rotary buffer and cutting pad at 1800 rpm, it's not going to be close to that when used on a DA at slow speeds with a foam polishing pad.

You won't go wrong with Rupes pads, you could also look at my favourite - Scholl spider pads.

Something like this:

https://www.cleanyourcar.co.uk/schol...avy-blue-145mm.

And yes, it might be worth a go with some 1500/1200/1000 grit (?) wet and dry and see how that goes.

Good Luck.

4th July 2022, 07:53	#4
AndyN01 This is my second home Toyota RAV4 Join Date: Jun 2017 Location: Tamworth Posts: 3,078 Thanks: 2,478 Thanked 1,579 Times in 968 Posts	I don't think Meguiar UC is 300 grit - that's seriously rough. It's the sort of grade to rip off everything, quickly. https://www.meguiars.co.uk/product/u...ompound-450ml/ Here's a reply from Meguiar's Inc from 2013........Re: Where is Ultimate Compound on the Abrasiveness Scale? We don't rate our consumer products with a cut scale like we do with our Mirror Glaze pro line because it actually causes more confusion with the general public. In all honesty, it would probably scare the heck out of many them too, as the average guy on the street just isn't all that savvy about paint care. Since UC is derived directly from M105 and uses essentially the same abrasive set, it can and will cut very quickly. But those abrasives allow it cut like that without scouring the paint (unless you're dealing with super soft and delicate paint, in which case any heavy cutting compound or aggressive pad will haze it). Further, the cut scale on the Mirror Glaze products indicates the amount of cut each product gives when used in it's most commonly used process. So while M105 may be a 12 when used with a rotary buffer and cutting pad at 1800 rpm, it's not going to be close to that when used on a DA at slow speeds with a foam polishing pad. You won't go wrong with Rupes pads, you could also look at my favourite - Scholl spider pads. Something like this: https://www.cleanyourcar.co.uk/schol...avy-blue-145mm. And yes, it might be worth a go with some 1500/1200/1000 grit (?) wet and dry and see how that goes. Good Luck. __________________ Andy. http://www.midlandsnanomeets.co.uk/ Last edited by AndyN01; 4th July 2022 at 07:55..