I have the griots 6, and have used it with the stock backplate, which is 6", and 6.5 pads before. It has the power to spin them, but I much prefer using a LC 5" backplate and low profile 5.5 pads for foam. The machine just seems to run better and is easier to use with the 5.5's but it's a matter of degree and hard to quantify. Others may prefer 6.5.
The GG is much more tolerant of larger pads than the PC. Forget 6.5 with a PC.
I've begun switching over. Just trying to use out my remaining 6.5 inch pads. 5.5 inch pads I like better. I will probably wax/seal with 6.5 inch pads for quite a while because they don't take the abuse the cutting and polishing pads do.
IMO it barely has enough power to correct with 5.5" pads. Put 10lbs of pressure on it and it stops.
Not true I've never a had problem doing any kind of paint correction with it. I don't under stand why people say this all the time and you have to put a lot more pressure than 10lbs of pressure at speed 5-6 to get it to stop!
You can get even pretty heavy correction with an original PC - not even an XP. And, you don't have to be a pro to do it. You just have to be patient and take your time - watch Mike's videos and read his articles.
A lot of time when someone is having "pad spinning" issues with any free spindle machine it's a technique issue. Sure, the pad will stop sometimes - but if you can't get correction and say you need another machine - 99% of the time that is just not the case.
You can use any size pad up to 6.5" with the GG6. The only reason to use smaller pads (and it's a good reason), is those pads are just too big for a lot of panels. It's not a pad spinning issue.
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