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Polishing Speed ?

Old 04-06-2019, 12:21 PM
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Default Polishing Speed ?

I'll be polishing with Menzerna 3800, a Porter Cable 7424, and a finishing pad. What speed should I use?

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Old 04-06-2019, 12:43 PM
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When compounding my hard clear coat with my 7424XP, I had to crank up the speed all the way with microfiber and orange cutting pads to get decent results. The PC doesn't have a lot of gusto. I slowed it down to the 4 or 5 speed when using a finer polish and softer polishing pads. I am guessing the 4 or 5 speed will work for you if you are just doing some finishing work, but it depends on your pad choice and your hand speed and pressure, I suppose. As always, start with the least aggressive approach first on a test area and see what results you can achieve.
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Old 04-07-2019, 12:36 AM
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I saved this guide from Meguiars, I think the Meguiars G110 and the Porter Cable 7424 may be the same unit or very close.

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Old 04-07-2019, 04:47 AM
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I used Menzerna 3800 in my shop and 4.5 works, with a final pass on a medium 3. That particular polish likes to be finished off with a light/slower final pass. So you use 4.5 with medium pressure going over the area 3 times, then a final pass very lightly with the speed on a medium 3. The 3 times at 4.5 is vertical, then horizontal. them angular with the final pass being a very light vertical.
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Old 04-16-2019, 01:12 PM
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Did this for my black car last weekend. M105 on 6 and 205 on 5. With the curves of the car and the DA sometimes stalling a little that seemed to add the power to get it done well.

As said I started with 5 and it felt fine and in control so ramped up. Orange pad w 105, black w 205.

EDIT: This was w the HF DA polisher so just as a reference

Last edited by ssg10587; 04-16-2019 at 01:13 PM.
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Old 04-17-2019, 09:48 PM
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thanks for the information
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