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[Solved] assembly parts for PRUSA 0.25  

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david martin
(@david-martin)
New Member
assembly parts for PRUSA 0.25

Hello,

Can I print the assembly parts for PRUSA printers with nozzle 0.25? I guess I'll have to put 3 walls and leave the filling at 20%, right? And the layer height at 0.15, of course.

I ask because as all gcode come prepared for nozzles of 0.4.

I don't want to have problems with sizes and tolerances.

Thank you.

saludos a todos!

Best Answer by cwbullet:

You can use a 0.25 nozzle, but You have to set the right settings in the slicer.  

https://forum.prusa3d.com/forum/prusaslicer/which-adjustment-for-changing-nozzle-diameter/

Posted : 23/08/2021 8:25 am
cwbullet
(@cwbullet)
Member
settings

You can use a 0.25 nozzle, but You have to set the right settings in the slicer.  

https://forum.prusa3d.com/forum/prusaslicer/which-adjustment-for-changing-nozzle-diameter/

--------------------
Chuck H
3D Printer Review Blog

Posted : 23/08/2021 9:15 am
bobstro liked
david martin
(@david-martin)
New Member
Topic starter answered:
thanks

Thanks a lot

Posted : 23/08/2021 9:21 am
fuchsr
(@fuchsr)
Famed Member

Sure you can, but for functional parts like that, it's—pardon my bluntness—crazy. The print times will go up astronomically, for no real gain. Unless your printer is way out of whack, the tolerances with a 0.4mm nozzle are more than adequate.

Posted : 23/08/2021 1:45 pm
bobstro liked
bobstro
(@bobstro)
Illustrious Member
0.25mm brush with 0.15mm layer heights will work but will be unnecessarily slow
Posted by: @david-martin

[...] Can I print the assembly parts for PRUSA printers with nozzle 0.25? 

You can, but that's like painting a bridge with a 000 detail brush. It can be done, but it will take forever and not gain you anything. You generally want to use a nozzle as small as necessary to pick out fine details, but no smaller

I guess I'll have to put 3 walls and leave the filling at 20%, right? And the layer height at 0.15, of course.

Your walls can be up to 200% of your nozzle size with quality nozzles, so a 0.25mm nozzle can print extrusions up to 0.5mm reliably. However, you're trying to push a lot of filament through a very fine nozzle, leading to possible problems with back pressure. The Prusa instructions for printing the parts recommend a 0.2mm layer height. Here again, 0.15mm will work but is going to be much slower.

I ask because as all gcode come prepared for nozzles of 0.4.

I don't want to have problems with sizes and tolerances.

The parts are designed to print well with a 0.4mm nozzle and 0.2mm layer heights, so I wouldn't worry too much. Do some tests beforehand to make sure fit is correct (e.g., for screws & nuts) but if you have it right for one small part, the rest should be fine with the same settings. Calibrating your extrusion multiplier will help with accuracy.

 

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 23/08/2021 1:59 pm
david martin
(@david-martin)
New Member
Topic starter answered:
printing time vs calibrate printer

I understand the answer, but I have mounted 0.25 nozzle.

For me, takes more effort to change the nozzle and recalibr the printer than the extra time it will take to print.

The only doubt is the number of walls. If with nozzle 0.4 you have 2 walls, with nozzle 0.25 they should be at least 3.

Maybe 4.

 

Thanks!

Posted : 23/08/2021 2:21 pm
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