Confusion about slow (2-3) vs high speed (5-6) on DA polishing

garbageman918

New member
This may be a very simple answer, but I wanted to make sure. I'm a little confused as to why speed 5-6 seems to be the speed of choice amongst most recommendations when it comes to polishing on DAs and even saying that it's 'more effective'.



There were some images from Kevin Brown's posts about when he attached the pen tips to the corners of fake pad. The slower speeds showed more 'loops' while the higher speeds showed 'peaks'. Given that, I would have guessed that a slower speed would in essence be 'more effective' at least at the technical level. I would have guessed with non-diminishing compounds, working at a slower speed might yield better results?



Hoping some pros and those with a lot of experience can chime in on this. The only real theories I have are:

1) Working it at 5-6 with high pressure can yield awesome visual results if done right, so why bother going slow

2) High speed also gives more power to allow you to put more pressure (KB method) on the DA otherwise it might not spin at all

3) It simply saves time so if you're a pro you can do more cars and make more $!! :)

4) Polishing lubricants still dry out nearly as quickly on 3 as they do at 6 so speed is needed to get more polishing in.



If it is more about time, I'm wondering if pros would recommend to rookie types to just take their time with polishing as it would yield similar results.



That being said, the first time I used my PC and griot's DA was on my friend's old pickup truck with m105/m205 with my attempt at "the KB method" and it turned out quite good....but figured I'd ask before I work on my rather newer cars :).
 
garbageman918- Just hypothesizing here, but:



- the "peaks vs. loops" might explain why some products finish out a little better at low speeds

- overall, the higher the speed the more times the buffing liquid gets rubbed across the paint, so the more abrasion/correction for the same period of time
 
The fact is, you simply can't get much correction without cranking the PC/G110 to 6 (I don't even bother with 5). More speed, more power, more rotation.
 
Scottwax said:
The fact is, you simply can't get much correction without cranking the PC/G110 to 6 (I don't even bother with 5)..



I do generally prefer 5 for 4" pads, but maybe that's because I'm running the 6" counterweight.
 
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