When one is trying to Design some thing, what sort of SIZING can one use.
Ie when i make some thing, i tend to work within 1mm and 0.5mm
but for lot of 3D printers its a 0.6mm Nozzle
Also, ive been trying to design things that are flat side down and not to extend over it. Like if you were printing a Face the Holes would be Free standing to a degree, is that possible, if so much much HANG can you do.
As i was trying to make a Spinder type object, Basically a Disc with a shaft in the middle.
I make it in to two Halfs and stuck together at the disc, but if i could make it with a lip, so they can lock together, would be better.
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I use nozzles from 1 to .1mm exactly for this reason. I deal with a lot of people prototyping something and are not concerned with the complications on my end. I can’t tell someone to change the wall thickness from .5 to .6 so it can print better on my machine. I adjust my machine to their design. I slice and examine every design with different extrusion thickness until perfect and use the appropriate nozzle. I print a lot of single walled designs where this is critical. Even with multiple printers I’m constantly swapping nozzles.
Over hang takes a lot of practice and is different with each material. We like to avoid support whenever possible. Bridging(printing flat roofs in the air) and unsupported perimeters are the black magic of FDM. The limitations depend on the experience of the printer. For real crazy stuff I use a filament that dissolves in water for support from a second extruder.
Hope that helps.
-Jesse
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