I kept hearing that the Porter Cable random orbit buffer was the easy way to
buff and wax a car, so I recently purchased one.
It's the 7434 unit like this: http://tinyurl.com/2kvmvq
I've never seen one in action.
Just tried it for the first time today, using a 6" lambswool bonnet (and
pad and counterweight) with medium rubbing compound to work on some
paint oxidation at the slowest speed, and I was not impressed...
I expected a swirling head and a very smooth random orbit motion. What I
the bonnet would spin sometimes, sometimes not very much or not at all, it
vibrates, and is noisier than I expected, like perhaps something is hitting
in the random-orbit mechanism. Maybe that's normal???
Can someone tell me if my expectations are too high, or did I purchase
a defective unit, or did I somehow set it up improperly???
I use one on my boat, truck, and vette, but I'm just waxing with a foam pad, not
a bonnet. I think it's great, and a BUNCH of my Boston Whaler buddies think so
Your description sounds like the pad is turning inside the bonnet.
Remember that it's quickly doing little circles and slowly rotating the the whole
Never run it not in contact with the surface, it will shake a foam bonnet to
pieces in nothing flat.
I made the assumption that it could be used for compounding as well as
but maybe I'm asking too much.
No, it's the pad sometimes not turning, I could see that, and the pad is
type that grips the "bonnet" backing... but I guess it's possible that
the pad screw that holds
the pad onto the buffer could be turning semi-loosely inside the pad
Well, the rotating was variable, sometimes fast, sometimes slow,
I did notice the pattern it made in the rubbing compound seemed to be
very tiny circular squiggles of perhaps 1/16th inch in diameter.
So, do I understand that the unit DOES have a great deal of vibration?
What about noise,
do you notice a high-speed clicking like something is being struck with
each random orbit?
I was expecting a smooth whirring sound, not a rough metallic buzz, and
a smooth constant
spinning of the pad, which is not the case.
The little circles in the compound are normal, though 1/16" seems small. 1/8"
right but it's been a while (I wax everything in May before Boston Whaler
The clicking is not normal.
It does have some vibration. Your arms will be very relaxed after waxing a whole
anything bigger than a jet ski. But it's not obnoxious.
It should simultaneously be making little circles, and slowly rotating the whole
IIRC, the rate of rotation of the whole pad is a function of how hard you press.
It seems to work best if you just press a little.
A lamswool bonnet should be used on rotary buffer, IMHO. The PC is a
You can get a lot of information on using the PC on Meguiar's site.
www.meguiarsonline.com and go to the G-100 forum.
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