Single stage paint minimum thickness

Discussion in 'Compounds, Polishes, Paint Cleaners, and Glazes' started by Tire Shredder, Jul 27, 2011.

  1. Tire Shredder

    Tire Shredder Jedi Nuba

    Hi everyone,

    Quick question -

    When using a paint thickness gauge, what do you consider the minimum acceptable reading for single stage paint that would allow you to polish it?
  2. tfish1

    tfish1 Birth of a Detailer

    minimum ive ever risked was at 56 on single stage and that was dangerously low what do you have for a reading
  3. Tire Shredder

    Tire Shredder Jedi Nuba

    Thanks fish. I haven't measured it yet. I am scheduled to work on a car this week that has been detailed many times but hasn't been done in several years. The owner is concerned with how much paint is left (he has no idea). I told him i'd bring a gauge to check it out, but i have no idea what my limit thickness would be.
  4. togwt

    togwt Nuba Guru

    A paint thickness reading of 4 Mil < ( 100 µ (Microns) is reasonably safe for polishing. 3 – 3.5 Mil ( 80-90 µ) I wouldn't use anything stronger than > 2000 grit polish, 2.75 – 3.0 Mil (70-80 µ) > 2500 grit polish and under 2.75 Mil (70 µ) use a glaze. The readings tend to vary from panel to panel and are thinner towards the panel edges.

    If you have reservations about the amount of paint surface removed or the amount of paint coating remaining the use of a paint thickness gauge (PTG) is arbitrary

    These numbers are offered as a guide only, as there are too many variables to provide any more than an approximation

    Note: 1 µ (micron) is 1/1000th of a millimetre or 0.0393700787 Mil or 0.001 of an inch

    • 200µ + can be expected on older cars that have been hand painted or a re-painted vehicle
    • 100 – 200µ 4 – 8 mil - normal paint thickness
    • 80 – 100 µ - 3 – 4 mils, thin paint
    • 80 µ < - less than 3 mil, very thin paint

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