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Technical question, important for design ( I understand this is somewhat variable with head temperature , speed and material ):

when you print a line, of a given layer height, how wide is it? ...

Would someone please point me to a discussion/ article on layer height optimization?

Looks like the lulzbot Taz 5 flexiduly add on head is the best in the industry for multiple materials. Its a dual head direct drive with one head optimized for hard and one for soft filaments. ...

Thanks for the tips!

I'm a maker, thinking of getting my own 3d printer, under $1000 to $2200 range. Not averse to building my own.

What I am most looking for is the ability to print with a lot of different filament...