Quote Originally Posted by WRAPT C5Z06 View Post
FG400 is more so water based, not high in solvents.
I'm going by what Dylan posted with regards to FG400. The wording may have been off but I found the threads for them.

Disappointed in Rupes pads- input needed please

Quote Originally Posted by Dylan@RUPES View Post
There is a known compatibility issue with the green foam and FG400 and directly relates to the solvent content of that particular compound (which apparently is rather heavy). Switch to a water based or low solvent compound and the issue will be non existent. In any event sorry to hear you had the issue and we're exploring solvent resistant foams, not that we need them for our compounds, but that some people use these and we'll help solve the problem from our end.
Disappointed in Rupes pads- input needed please

Quote Originally Posted by Dylan@RUPES View Post
Thats certainly the most unusual pad failure I've ever seen. Like anything theres always some chance its simply a defective pad, but with foam deterioration on this level it would be unlikely. Pads are cut from large buns of common foam, so it would mean we'd see similar/identical catasrophic failure of tons of pads in the same batch. The reports of pad failure vs. the number in the marketplace and the level of failure doesn't seem to point to a foam issue, but stranger things have happened.

I browsed over the thread, so forgive me if I missed it - but looks like you're running speed 4.5 and this is on a 21mm tool? If thats the case I'd recommend backing down your speed to the 3 or 4 range. Its a depature from what everyone has been coached to do for so long, but sustained high speeds are not what the Mark II are designed to do. 3-4 is your 'normal' range then you jump it up to 5 or 6 if you need to compensate for reduced pad rotation in a curve. Also, that pad looks HEAVILY saturated with compound - another counter intuitive thing in our system is the little amount needed. Saturating the pad to that degree can have some impact on the pads performance and ultimately the life of the pad.

Lastly, as was touched on - is solvents - polishes with solvent content seem to have a pattern of eating our green or blue foams. If I missed it I apologize, but what chemicals were being used on the pads?
EDIT - just saw FG400. We have identified a VERY specific pattern of that compound vs. our green foam that they do not play well together. I am unclear as to solvent content (or whatever other content there is in that formula) but I would discourage the use of FG400 specifically with the green or blue. Doesn't seem to have issues with the others and the green seems to be the least compatible. As our compounds are all water based they foams were setup for that in compatibility - the issue between this specific compound and that pad is something that only manifested itself fully in the last 8-10 months and there is a definite pattern.
Here's the one about Meguiar's polishes.

Over heating Rupes Pads