poly and coating technique

i used to always wipe the dust off from sanding between poly coats

but for some stuff that did not need to be presentable and i coated just as a measure to keep out ambient moisture i left the dust on between coats

i found that the dust seems to go back into solution once i applied the next coat and as far as i can tell there was no downside at all

now i do not clen the dust off and i get better coverage and use less poly

do the higher end finishes require strict cleaning of the sanding dust or do they take the dust back into solution

No poly will dissolve previous coats, dust or not.

may be true but the dust from sanding the previous coat is not visible when sprayed over with the next coat

It may not be visible to the optical senses, but it is often visible to the tactile senses.

Never has, never will. Spot on as usual.

As a professional that finishes as part of my living, all I have to say about that is "not to you".

Robert