What cuts faster-slow or fast rotary speed?

[wifehatescar]

With dimishing abrasives, more heat/speed = breaks down quicker I assume (particles get smaller faster)



With a rotary in general, a faster speed would cut faster I assume



So...to combine these 2 assumptions, say if I was using SSR2.5, what option cuts faster?



1. 1000rpm for the 1st pass then crank up the speed

2. 1800rpm for all passes



I was doing option 2 when I needed to cut fast, now I`m thinking option 1 might be quicker??? :nixweiss

[hondaguy2582]

Try a wool pad if you want extra cut without going too far in speed.

[wifehatescar]

Meh, yea, there`s that...

really I`m just interested to solve what option above is faster just for my own knowledge...

I`m racking my brain on it

[wifehatescar]

I just called Meguiar`s, they voted for option 2 being faster. Not sure if I agree or not.

[kartoon]

From watching the Meguiar`s video I got the impression that it`s better to do the first pass at higher rpm and some pressure and reduce speed and pressure with each subsequent pass.

[Accumulator]

wifehatescar- IMO it depends on the polish, and I`m not familiar with the SSR2.5. I`d ask PB`s what they recommend.



With 1Z polishes, the diminishing abrasives thing happens just as you suspect- if you use too fast a speed you don`t get *as much* cut because they break down too fast. With other products like 3M, they seem to cut better *with* a faster speed.



I dunno about any advice from Meg`s phone reps. I`d ask Mike P. what *he* recommends and go with that.

[wifehatescar]

It might be a toss-up really.

The first 30 second of SSR3 you can HEAR the abrasives on the paint!

I have an email into Steve at PB`s for his opinion.

[imported_Intel486]

Faster speed will increase friction. The heat created is from the friction.



From what I`ve seen you don`t want to heat modern paint past 120 degrees and with a rotary that is extremely easy to get to!!! I usually run at 1200 for normal polishing. 1500 to 1800 for more serious work.