Rotary: How much heat is too much?

C

Caprice270

New member
Hi everyone,



I'm just starting out with the rotary and I was wondering how much heat is too much? I'm moving the rotary across the paint reasonably quick at 1500-1700rpm and still the paint gets warm. Should I slow down and allow the rotary to generate a bit more heat? What's the ideal heat for correction and finishing?



Thanks.
 
The ideal heat for correction is no heat. B/C paints do not require heat like the old lacquer paints to get a good cut.



Once you get past 100-110 degrees F things start happening very quickly.
 
MichaelM said:
The ideal heat for correction is no heat. B/C paints do not require heat like the old lacquer paints to get a good cut.



Once you get past 100-110 degrees F things start happening very quickly.
Click to expand...



Not true... all diminishing abrasives require friction to break them down. Heat is always a by product of friction (basic physics). Now with that said, minimizing the heat by cutting at a slow controlled pace is desirable for someone who is new and unsure of the cut of the process, pad, and chemical.



The bottom line is there is no ONE answer to your question. There is way too much variance in the hardness of today's clear coats. Some hard ceramic clears require much more friction and therefore heat to cut and some softer clears cut so easy that you don't even detect heat when correcting it.
 
danponjican said:
Not true... all diminishing abrasives require friction to break them down. Heat is always a by product of friction (basic physics).
Click to expand...



The question wasn't one of basic physics but rather, "What's the ideal heat for correction and finishing?"



Is heat a by product? Yes.



Is heat a requirement for cutting? No.



Have you ever seen a polish manufacturers recommended heat range during polishing? You won't because it isn't necessary, as all hand and DA polishers can attest to. In the hands of the experienced, heat is a tool that can aid in cutting ability of a given combo, but isn't necessary to polish paint.
 
Its just that I was under the impression that the rotary has an advantage over other machines because it can generate more heat to breakdown polish. Ofcourse too much heat can be detrimental. 110 degrees sounds a little low. Maybe I should lower my rpm.
 
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