Questions - suggestions Printer nozzle size

Hello, I’ would like to ask and suggest that best IMO nozzle size is to have 2 nozzles of different size.

To be able to print every possible thickness from 0.1 to anything with 0.1 step size we need to have two nozzles.

First nozzle should be 0.1mm

Second nozzle should be 0.3mm

By using both nozzles any thickness like 1mm, 0.6mm, 1.5mm etc. can be printed. The small nozzle is good for small details like gears, or parts that need to fit one into into another. Also this would allow standardization across printers and freedom of designing things.

One could expect that software will select best printing method and use 0.1mm nozzle for details, outer shell. And larger nozzle for everything else.

Getting back to today 0.4mm nozzles they seem to be the limiting factor of 3D pritners, not only many printers have various nozzle sizes but the designer with objects that have wall thinness like 1mm, 0.3mm, 0.5mm etc. these objects can’t be printed with most today’s printers. The problems is nozzle size. If the wall thickness doesn’t divide into sigle or multiple passes of nozzle the wall can’t be printed or looses details, or dimensions are not exact.

Maybe this is not so obvious on printing figurines, but since zortrax is designed to print usefull 3D models, gears, prototypes, etc. I think that using dual nozzle size that could compliment each another is the way to go.

Furthermore I would like to add that adding a nozzle dedicated to infill is beneficial too. The size should be IMO 1mm. That is because you can easily print various metric walls with it. Like 1mm, 2mm, 3mm etc. By using the two nozzles above a complete gamut of thicknesses becomes available limited by 0.1mm step size.

To make nozzle output stable I think zortrax should use the same idea like Robox has, that is to use needle valves for the extruder with flow tracking, making it possible to switch nozzles quick and to know if there is a problem to stop the print.

It looks simple but in reality it is so long story behind of this that my english is not enough to explain this in short post :slight_smile:

PS. Do not exist nozzle which let you print 0.1mm walls and even ‘accessible’ resin printers have a spot of ~0.35mm size, due of material inflate after exit from nozzle 0.3mm nozzle = ~0.35mm solid wall but 0.2 and 0.3mm nozzle need so strong force to extrude filament and can produce very weak walls, the ~0.4mm is something like a gold standard which give good 0.5mm walls it is enough for engineers.

Anyway we must learn to walk before we can run the default single nozzle setup with perfectly tuned software tricks and firmware can produce miracles when we begin to feel that we reached a one extruder limit then we start to think about hardware upgrade but just now so much of software features to try still to do.

Best Regards

My english to not so good either, so I would like to add that I did not want to say that I want to print 0.1mm walls, the idea was to print a wall like 1mm thick. With the 0.4mm nozzle that is not possible because you have 0.4+0.4+0.4= 1.2mm thick or 0.4+0.4= 0.8mm thick.

Or am I wrong?

In the future we will not have to heat filament, read here:

Also an extruder upgrade (that would be easy to service) like this would be awesome:

We can make any line size from 0.4-1.5mm using 0.4mm nozzle because extrusion speed + speed of flow = line width

Best Regards

[quote name=Martin Olchanowski]We can make any line size from 0.4-1.5mm using 0.4mm nozzle because extrusion speed + speed of flow = line width

Best Regards

Thank you, this clears this up. Thank you for building zortrax ! And for special pricing for filament for the owners. I plan to buy one this year ! I suggest you make more engineering type of prints and put them to your gallery. I got notified about this printer when my fried so the prototype box for electronics printed.