Can you use the Porter cable 7424 to

[Spawne32]

compound a car after cutting it with 2000 grit? If so...what pad would you use? wool, or foam.

[black bart]

Originally Posted by Spawne32

compound a car after cutting it with 2000 grit? If so...what pad would you use? wool, or foam.

Yes I used a LC orange and Meg. # 83 that is a mild combo and it took awhile but yes it can be done.
The pros use a rotary because it is fast and to them time is money but if you are a hobbyist just use what you have unless you are talking about the entire car.
If you painted the whole car rent a rotary from a tool place.
PC will work it is just slower.

[black bart]

After rereading your post it sounds like you did the whole car you did not make that to clear but if you did the entire car the answer is still the same.

Time to do a door with a rotary and a wool pad about 2 minutes with a PC and a foam pad 30 to 45 minutes.

[togwt]

Wool pads are not recommended for random orbital machines (Porter Cable 7424, etc) as wool pads nap / fibres works more efficiently with a centrifugal motion as opposed to centripetal force, they also have more frictional resistance than a 7424 can overcome due to the limited torque available

1. If the nap (fibres) of the wool pad is longer than the eccentric offset (stroke) of the random orbital polisher the effective transfer of energy will be lost
2. Foam cutting pads tend to be much’ stiffer’ than wool fibres and thus will transfer the movement of the machine to the paint surface more efficiently than a comparable wool pad on an orbital polisher

[Spawne32]

Originally Posted by black bart

After rereading your post it sounds like you did the whole car you did not make that to clear but if you did the entire car the answer is still the same.

Time to do a door with a rotary and a wool pad about 2 minutes with a PC and a foam pad 30 to 45 minutes.

yeh it was just painted, its got some orange peel, definitely needs to have that corrected to bring out the shine.

[black bart]

Originally Posted by Spawne32

yeh it was just painted, its got some orange peel, definitely needs to have that corrected to bring out the shine.

Do you have a PC.
DO own or have access to a rotary.

[Spawne32]

Originally Posted by black bart

Do you have a PC.
DO own or have access to a rotary.

I have a PC. I own a broken rotary, i have access to one if needed. Have i ever done this before? No.

[black bart]

Originally Posted by Spawne32

I have a PC. I own a broken rotary, i have access to one if needed. Have i ever done this before? No.

If you have experience with a rotary then that would be what I would start with then if you have any buffer trails and you probably will use the PC to finish to the gloss that you want.
Rotary is WAAAAAaaaaaayyyyyyyy faster than a PC

If you don't have much experience with a rotary keep speed down to no more than 1200 rpm or less and stay away from edges, you can get those with the PC better safe than sorry.
If you don't keep your hands moving a rotary will burn paint in a heart beat.

[Pander5]

Spawne32,

I agree with blackbart and the short answer to your question is yes. I have used Meg's 105 with an orange pad and the Kevin Brown Method to achieve amazing results and far more cutting and polish ability than is normally available with just a PC and compound/polish via the traditional method. I've also achieved decent results with exerted pressure, slower passes and repeated passes using the more traditional methods and sometimes with a yellow 5.5" LC pad. While a rotary IS substantially more effective (i.e. quicker), a PC can be worked more effectively than many think and can remove at least 2000 sanding marring. That's my experience anyway.

[Spawne32]

what is the kevin brown method

[black bart]

Originally Posted by Spawne32

what is the kevin brown method

It is just a method of priming the pad.

Do a goggle for Kevin Brown and you will find tons of Info..

[Make it shine!]

Originally Posted by Spawne32

what is the kevin brown method

It is a bit more then just priming the pad, although the priming is extremely important. Its also abotu applying a little pressure while working slowly. Like previosuly stated google it or PM me i'll send you a link.

[JaredPointer]

Originally Posted by Spawne32

compound a car after cutting it with 2000 grit? If so...what pad would you use? wool, or foam.

If you give the PC enough time, it can do just about anything.

[Pander5]

The KBM also involves spritzing with water after a couple of passes of the pad and M105 i.e. at the midpoint of that section's pass. That, to me, is the essential part because it results in what is similar to a wetsand effect of the polish and recirculates more of the abrasives that you've previously worked into the pad.

I've seen videos of the "Kevin Brown Method" and some DON'T include the water spritz. THAT'S NOT IT COMPLETELY.

[Mike Phillips]

Originally Posted by togwt

Wool pads are not recommended for random orbital machines (Porter Cable 7424, etc) as wool pads nap / fibres works more efficiently with a centrifugal motion as opposed to centripetal force, they also have more frictional resistance than a 7424 can overcome due to the limited torque available

1. If the nap (fibres) of the wool pad is longer than the eccentric offset (stroke) of the random orbital polisher the effective transfer of energy will be lost
2. Foam cutting pads tend to be much’ stiffer’ than wool fibres and thus will transfer the movement of the machine to the paint surface more efficiently than a comparable wool pad on an orbital polisher

I've read this before... I found it here by Todd Helme?

purple foamed wool pad vs Surbuf pads.. - Corvette Forum


Let's give due credit where credit is due. Todd did a great job of explaining why you can't get good results using long fiber wool pads on DA Polishers.