PC Newbie - Pad friction

Tor-Lein

New member
Hi there!



Got my new PC a while back, and finallt got my pads and backingplate.



I started out on my fathers 2003 Mitsubishi Galant.



Started with "Megs. #2 Fine Cut Cleaner" and white pads.

But the problem is that the pads seem to stick to the paint. To much friction.

If i set the PC speed to 5, the speed seems to be stuck on 1 as soon as i touch the paint. What is the deal?

What am i doing wrong?



The only pad that works is a wool-pad, which works great. Visible small scratches just go away. Even with Megs. #2 they are gone in an instant. Well, you know...



The paint is washed and clayed.



Thanks for any advice!
 
Tor-Lein said:
Got my new PC a while back, and finally got my pads and backing plate. I started out on my fathers 2003 Mitsubishi Galant.



What condition is the paint in now and what is your goal for it?

Is there any clear coat failure taking place?





Tor-Lein said:
Started with "Megs. #2 Fine Cut Cleaner" and white pads.

But the problem is that the pads seem to stick to the paint. To much friction.



Make sure on the back label of the bottle it states the product is for use by rotary buffer, DA Polisher and Hand. There was a previous version that was for rotary buffer only.



Tor-Lein said:
If i set the PC speed to 5, the speed seems to be stuck on 1 as soon as i touch the paint. What is the deal?

What am i doing wrong?



That doesn't sound right. You mean the motor bogs down when you try to buff the paint?



Normally you don't turn the polisher on until it is touch the paint or you'll throw product splatter or even fling your pad off the backing plate. I'm writing an article write now that touches on this.



Tor-Lein said:
The only pad that works is a wool-pad, which works great. Visible small scratches just go away. Even with Megs. #2 they are gone in an instant.



Read through this and see if you're making any of the most common mistakes,

(Originally posted on MOL here)





Here's a list of the most common problems



1. Trying to work too large of an area at one time.



2. Move the polisher too fast over the surface.



3. Too low of speed setting for removing swirls.



4. Too little pressure on the head of the unit.



5. Too much pressure on the head of the unit so the pad quits rotating.



6. Not keeping the pad flat while working your product.



7. Too much product, too little product.



8. Not cleaning the pad often enough.





Here's a list of the solutions in matching order,



1. Shrink your work area down, the harder the paint the smaller the area you can work. The average area should be and average of about 16" by 16" up to 20" by 20" or so. You have to do some experimenting, (called a Test Spot), to find out how easy or how hard the defects are coming out of your car's paint system and then adjust your work area to the results of your Test Spot.





2. For removing defects out of the paint you want to use what we call a Slow Arm Speed. It's really easy to move the polisher too quickly because the sound of the motor spinning fast has a psychological effect to for some reason want to make people move the polisher fast. Also the way most people think is that, "If I move the polisher quickly, I'll get done faster", but it doesn't work that way.





3. When first starting out many people are scared of burning or swirling their paint, so they take the safe route of running the polisher at too low of a speed setting, again... this won't work. The action of the polisher is already g-e-n-t-l-e, you need the speed and specifically the pad rotating over the paint as well as the combination of time, (slow arm speed), together with the diminishing abrasives, the foam type, and the pressure to remove small particles of paint which is how your remove below surface defects like swirls or scratches. It's a leveling process that's somewhat difficult because the tool is safe/gentle while in most cases, modern clear coat paints are harder than traditional single stage paints and this makes them hard to work on. This is also why people get frustrated, they don't understand paint technology, all they know is their paint swirls easy and getting the swirls out is difficult and thus frustrating.





4. For the same reason as stated in #3, people are scared, or perhaps a better word is apprehensive, to apply too much pressure and the result of too little pressure is no paint is removed thus no swirls are removed.





5. Just the opposite of item #4, people think that by pushing harder on the polisher they can work faster and be more aggressive, but the truth is the clutch in the tool is a safety mechanism to prevent burning and will cause the pad to stop rotating, thus less cleaning or abrading action and once in a while this will lead a person to then post on the forum something like this, "Hey my pad doesn't rotate". There needs to be a balance of enough pressure to remove defects and keep the pad rotating but yet not too much pressure as to stop the rotating action. This balance is affected by a lot of things, things like type of chemical, some chemicals provide more lubrication and the pad will spin easier, curved surfaces or any raise in body lines will tend to stop the pad from rotating. This is where experience on how to address these areas comes into play or you do the best you can and move on. It's not a perfect tool, nor a perfect system, but it's almost always better than working/cleaning by hand.





6. Applying pressure in such a way as to put too much pressure to one side of the pad will cause it to stop rotating and thus decrease cleaning ability.





7. Too much product over lubricates the surface and this won't allow the diminishing abrasives to do their job plus it will increase the potential for messy splatter as well as cause pad saturation. Too little product will keep the pad from rotating due to no lubrication and there won't be enough diminishing abrasives to do any work. Again it's a balance that comes with experience, or another way of saying this would be it's a balance that comes with hours of buffing out a car to learn what to do and what not to do. Information like what you're reading here is just an edge to decrease your learning curve. Hope this is helping.



8. Most people don't clean their pad often enough and most of the time the reason for this is because they don't know they're supposed to clean their pad often and they don't know how to clean their pad. Again, that's why this forum is here to help you with both of these things. You should clean your pad after every application of product or every other application of product, your choice, most of the time cleaning your pad after every other application of product works pretty well. It enables you to work clean and enables the foam pad, the polisher and the next application of fresh product too all work effectively.
 
Here's just a portion of a brand new article I'm writing with pictures and animated graphics.



Spread your product out first

To start, place the face of the buffing pad with the product on it flat against the paint. Then turn the polisher on and quickly spread the product out over the entire section you're going to work. You can do this rather quickly because at this point you're not trying to remove defects you’re just trying to spread the product out over the paint so that you have a uniform film of product spread out over the section.





Overlap your passes by 50%

After you spread the product out, now slow your Arm Speed down and begin making overlapping passes usually in a crisscross or back and forth, side-to-side pattern. The goal is UMR, that is Uniform Material Removal. The reason for this is so that you remove an equal amount of paint over each section and in turn over the entire car. In order to do this you need a method that you can control and duplicate and for most people following a back and forth, side-to-side pattern works because it’s easy to do and easy to duplicate.



The definition of a pass

There are two definitions of the word pass as it relates to machine polishing with any type of machine.



Single Pass

A single pass is just that, it's when you move the polisher from one side of the section you're buffing to the other side of the section you're buffing. That's a single pass.



Section Pass

A section pass is when you move the polisher back and forth, or front to back with enough single overlapping passes to cover the entire section one time. That's a section pass.



In most cases in you're removing any substantial below surface defects you're going to make 6-8 section passes to the section you’re working before you either feel comfortable you've removed the defects or you're at the end of the buffing cycle for the product you're using.



Buffing Cycle

The buffing cycle is the amount of time you are able to work the product before the abrasives have broken down if you’re using a product that uses diminishing abrasives, and/or the product begins to dry and you lose the lubricating features of the product. Different products have different buffing cycles depending upon the type of abrasives used in the formula and the different ingredients used to suspend the abrasives and provide lubrication.



Factors that affect the buffing cycle include,

  • Ambient temperature
  • Surface temperature
  • Size of work area
  • Type of machine
  • Type of pad material
  • Humidity
  • Wind or air flow surrounding the car
  • Amount of product used
  • Technique



It's pretty detailed, haven't done a word count yet but we had to increase the character limit to 30,000 for a single post on AG and the article is over 7 posts so far and not finished.



:)
 
Mike Phillips- Ah *SECTION PASS* and *BUFFING CYCLE*! Those're the terms I've been groping for lately :idea Think I'll appropriate them, if you don't mind...
 
Accumulator said:
Mike Phillips- Ah *SECTION PASS* and *BUFFING CYCLE*! Those're the terms I've been groping for lately :idea Think I'll appropriate them, if you don't mind...





I stole Buffing Cycle from Meguiar's as we used it all the time in training classes.



I'm a big believer in giving credit where credit is do and always like the same kind of treatment. I I did coin the Section Pass and Single Pass terms for the new article I'm writing, worked on it till midnight last night and then it just came to me. Not a big deal but by the time the article is done it will likely become the norm for a lot of how-to articles I'm going to write.





Been struggling for years to explain 'passes' in the context they are used and figured it out last night. Should have the article and a new write-up finished late tonight or tomorrow. Need some more pictures and graphics.





Back to typing...





:lol
 
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