jimc wrote:ok mitch, is should not matter where you have the width. once the multiplier is set correctly and assuming the filament dia. stays dead on accurate then you can make the width whatever you want and the slicer will create wall that width. so a breakdown here is if with a 1.00 multiplier and a width of .45 you got .45 then at .50 your wall with should be .50. the only variable there that would affect that is how accurate the extrusion of your filament is. if the filament varies dia just a little it throws that off.
This totally makes sense, and something that I already understood. I guess the disconnect was going back to earlier recommendations to INCREASE the width setting to compensate for really crappy top fill areas. Doing this eventually led to chronic clogging of my nozzle during large prints, presumably because of over extrusion. Up until doing this wall tests I've never changed the extrusion multiplier from the default 1.0 value, but I have gone from 0.40 to 0.45 then to 0.48 width setting progressively to try and get a solid top fill. The top fill never really got much better but I did end up with failed prints due to a backed up nozzle at 0.48.
Running further tests using my favorite filament (gray PLA from Push Plastic) this morning, it appears that everything default across the board is the most accurate. 1.00 mult, 0.40 width and 1.75 filament setting. Surface of walls is smooth as butter, thickness is dead on at 0.4mm.
If I understand what you are saying, I should be able to change the width value and simply make thicker walls but keep the quality of the surface the same. In turn, that should reduce the gaps in top areas. However, how do I compensate for potential clogging issues once I start pushing the width beyond 0.45mm?