pressure?

[SVR]

Been practicing at work with a rotary and 3M Perfect it III extra cut.
Read the label and it stated use light to medium pressure
Tryed it and it did a good job but I have read here many times that you should use no pressure
Even DIY channel had a guy with a 3M foam waffle pad and perfect it use no pressure and the car came up awesome

Should I follow manufacturers directions or just use no pressure with every compound
Menzerna PG bottle states medium pressure

What's the way to go
Got the following

PPG single cut 1500
Farecla G3
Malco rejuvinator
3M PII RC
3M PIII RC
Menz PG

[seracis]

I would start with very little to no pressure. If the results do not suit you, use a little more. Everybody's "pressure" gauge is a little different.

[6']['9]

i say let the machine do the work. A lot of times adding pressure with a rotory will induce swirls.

[SVR]

That's what I have always done, let the machine work.
With 3M extra cut, if you don't use pressure, the stuff doesn't break down completely and leaves dusty residue.

How long do people here spend machine buffing a panel, say door and hood.

[6']['9]

ive used the 3m and work it until it breaks down which can be a while. it normally takes a while to break that product down, i use a polishing pad instead of a cutting. Dont worry about the residue if you go to the next step like 3M machine glaze that residue or hazing will dissappear

[SVR]

Cheers, I'll be getting machine glaze this week

[mochamanz]

I use the rotary like a floor buffer, using the up/down tilting of the handle to control direction. Also I use the slower speeds on the rotary, It still cuts aggressively, but doesnt introduce added friction and heat. As the polish breaks down, I use ISA (alcohol) to keep the product fron drying out too much, this gives me enhanced work-time, and doesnt load up my pad, as the polish breaks down, I wind up with a dusty residue.... also, I dont have to go to a finer product In particular, IP on my light finish seems to work down to a fine cut polish after I have sprayed the pad with ISA and let the polish do its thing. When I started, I used to burn the paint occasionally using pressure. Now, I use a moderate speed and the weight of the buffer only. And I keep the thing moving at all times !

[Accumulator]

I could *never* get the Extra Cut (05936) to work right for me...it *always* left pretty nasty marring in its wake, and I don't mean "micromarring" either. I wan't using it on super-hard paint, but still, I had to really work the area with a milder RC (05933) to fix it. No matter what I tried (pressure/none, different speeds, you name it) the EC was just too aggressive for me

I generally don't use much pressure at all with the rotary, I too try to "let the product do the work". But then I don't mind working a panel for quite a while; I'd rather spend more time with a conservative approach.