Heat build-up during polishing. is it to be avoided or used?

I understand that too much heat during polishing should be avoided.
But there are some people I know who are saying that certain amount of heat is needed and I should use it when I am polishing with a rotary.
Could some members here enlighten on this one?

 

[Energy in a system may take on various forms (e.g. kinetic, potential, heat, light). Kinetic friction, or surface resistance induced heat; an often misunderstood concept of polishing / compounding; abrasives require friction to breakdown, not heat; heat is just a resultant of friction between two surfaces. Kinetic friction is required to ‘level’ paint, which is simply the removal of paint to the lowest point of the paint defect] [1]

A finishing pad will not provide as much friction as a cutting foam pad (less surface resistance) although they will both produce friction induced heat, whereas a wool pad, due to their composition, creates less friction induced heat but more kinetic friction (due to its fibrous structure) than most foam pads.

Polishing a paint surfaces transfer’s kinetic friction induced heat to the paint surface, thermoplastic polymers have both tensile strength (a linear stress-strain relationship) and elongation (elasticity) which allow the surface to flex, expand and contract in accordance to surrounding temperatures, solvents, resins and other ingredients in polishes will expand causing the paint film surface to expand

As the metal substrate expands the paint moves with it, due to its elasticity, thereby becoming elongated (thinner) this is part of the cause of friction induced ‘burn’, you’re applying pressure and an abrasive to a less dense (‘thinner’) paint surface, excess friction induced heat can cause the paint surface to burn, blister, haze, and cause excessive swirls

Plastic has a much lower rate of thermal conductivity than metal, so it absorbs heats at a far greater rate.

Polishes and compounds do not need heat per se for the abrasives to polish a surface, wither they be diminishing or non-diminishing abrasive, they require both pressure and friction

 

Thanks for the information. Togwt.

So the expansion of metal substrate or the paint getting elastic doesn't help polishing process, your saying?