[DavidB]

91,

Here's the straight scoop:

1. Most companies who sell clay "claim" they don't contain abrasives. That's just not factual. All clay bar products use a 3 micron or better abrasive particle suspended in a plastic clay or elastic clay (poly) base.

2. What makes clay work is that you evenly distribute the abrasive over a large area with even pressure. Without a lubricant, clay would stick to the paint surface. When you add a lubricant, the clay is suspended over the paint surface by hydraulic force (the liquid). Any contaminates sticking up above the thin film of lubricant are filed (sheered) off by the clay. Some people claim the clay pulls contamination off, and this is likely with some material, but for the most part it is filed off.

3. The lubricant you use is very important. I personally do not like to use quick detailing sprays as a lubricant. I don't believe most QD sprays provide enough slip. Some evaporate too fast. I highly recommend a lubricant designed for clay. A car wash solution works okay, but it creates too much foam for my liking.

4. You will not always "feel" the clay working. Having any tactile sense from the clay will depend on the clay formula, your lubricant and the level of contamination on the paint. The most important thing is to check your work often. Never make more than 4 or 5 passes over an area without drying, feeling and inspecting your clay. Knead your clay often to provide a new surface. Pre-lubricate your clay by sprayng your clay bar and the paint surface.

db