Does paint on bumpers behave different??

[andym]

I'll give it another go tomm, and see what happens!
thanks for all the input, and advice
I'll post my results soon as i get it done.

[Mike Phillips]

Can it be that the plastic bumpers dont retain heat like metal panels, therefore dont aid in the product breaking down correctly?

No, they do retain heat.

Mike aka Setec Astronomy is correct. Plastic and/or Urethane components under the paint retain heat better and dissipate it less effectively than metal panels and this is where you'll hear about a problem called twisting when spending too long a time on these types of components with a rotary buffer.


As for breaking abrasives down... heat is an unnecessary and unwanted by-product caused by pressure over time.

Heat is bad for the paint and when using quality diminishing abrasives the break down by the pressure applied to the pad over time. Heat is like I said above, an unwanted and unnecessary by-product from the process.

[Deep Gloss Auto Salon]

Besides the paint on the bumper having some type of flex agent in it, I've been told that components like the bumpers and spoilers, any aerodynamic skirting etc. is often times farmed out to other companies and then added to the car at the manufacturing plant.

Mike, you are, correct...... These are supplied parts from outside vendors. I have been

in many assembly plants In North America.

[FlawlessJ]

Mike, you are, correct...... These are supplied parts from outside vendors. I have been

in many assembly plants In North America.

I have never heard of this before... It explains a whole lot though!

Sent from my ADR6400L using Tapatalk

[andym]

Thanks for clearing that up guys!!
I'm also guessing that maybe i used too much product for the area covered.

[JBL]

Mike, you are, correct...... These are supplied parts from outside vendors. I have been

in many assembly plants In North America.

That explains my bumpers. After a good wash and wax, the color of the bumpers is just a hair of a shade off from the rest of the car...cloudier, blue-er.

[Mike Phillips]

That explains my bumpers. After a good wash and wax, the color of the bumpers is just a hair of a shade off from the rest of the car...cloudier, blue-er.

From what I've seen over the years... the color/clarity issue only gets worse...

Look at the paint on any factory C4 Corvette and with any medium colored paint all the urethane molded components will look a shade or two lighter and duller and no amount of buffing will equalize them with the surrounding paint.

[Setec Astronomy]

From what I've seen over the years... the color/clarity issue only gets worse...

Look at the paint on any factory C4 Corvette and with any medium colored paint all the urethane molded components will look a shade or two lighter and duller and no amount of buffing will equalize them with the surrounding paint.

Absolutely true that the old urethane panels used to fade to an irretrievably different color...but I haven't noticed that to be happening on the newer cars...maybe they just aren't old enough yet.

[JBL]

Absolutely true that the old urethane panels used to fade to an irretrievably different color...but I haven't noticed that to be happening on the newer cars...maybe they just aren't old enough yet.

2008 Honda Accord in black metallic...not noticeable to the average eye, but in the right light, it makes me abslutely nuts; the rear bumper to the rear quarter panels. I don't notice the effect as much on the front, but my front bumper has been through war--mostly road rash and rogue parallel parkers--so it's harder to say.

[shoeless89]

I don't know a whole lot of what the paint is made of. But I do know that the paint on my rear bumper looks much different then the paint on my metal panels. It kinda sucks I talked to a body shop guy about it and he said because the bumper is plastic and the panels are metal it will always look slightly different. He said they use the same paint for bumpers, roofs, ect. But on my car the only OEM paint is the roof and trunk lid lol I used to drink a lot and when I drank I used to like to drive But thats all in my past. Long story short, at least from repaint panels, it all depends on what the surface is made of.