Re: "Resolution" of the MK3 nozzle
Have a look at this. CNC Kitchen shows how to increase the play;
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Gert
Re: "Resolution" of the MK3 nozzle
I have a slightly different question. I understand the errors that occur due to filament expansion/contraction, etc. I do a lot of threaded screw holes and keep a set of screw drawings at 100%, 110% and 115% to use. I usually make a test dwg of the sizes and see which one fits. I never get the same answer twice, since the printed dimn depends on the bulk of the surrounding area (inside / outside / edge….). I also observe that the horizontal accuracy varies with layer height and print density. There is a lot of trial and error in the 3D printing process.
What I want to know is what horizintal resolution should I use in my dwgs. There is no point in drawing an object 1.005 wide if the printer is going to round it off to1.010 or 1.000. So, my question is: what is the fundamental horizontal resolution of the mk3? I will then design my parts using those increments and deal with the expansion/contractioncorrections in those increments. My guess is the minimum horizontal step size is in the 10-30µm range.
Anybody know?
Re: "Resolution" of the MK3 nozzle
One other point to make is the printer has very fine X and Y resolution; much finer than the nozzle limitations. So a step in a linear boundary can be fractions of a mm and will be resolved. The places at corners is where the nozzle diameter becomes important: any corner is limited to that radius.
To improve detail at sharp edges, a smaller nozzle is required. E3D now has 0.15 nozzles.
Some designers will consider nozzle radius so that interior angles become curves and reflect the nozzle limitations to achieve superior fit when joining two parts. It depends on just how much detail you need.
@beng - X or Y resolution depends on several factors, but when printing a vector, any absolute coordinate resolution becomes blurred. The Slic3r PE code takes the dimension and determines where the head will be positioned based on extrusion settings; and that value may not match what another slicer does. Trying to second guess it - imo - is futile. But here's one such discussion:
https://www.reddit.com/r/3Dprinting/comments/85ng1p/prusa_i3_mk3_xy_resolution/