[Solved] 0.25mm nozzle  

RE: 0.25mm nozzle

How did you revise the slicer for 0.2mm nozzle, 
Did you change your nozzle size to 0.2mm?
did you change your Variable Layer height Max value to say 0.18mm?
did you lower the first layer to say 0.15mm to 0.18mm?
Did you lower your other layers to below 0.18mm?
Did you set your extrusion widths to say 0.25mm except for first layer 0.22mm and top infill 0.2mm?
regards Joan

RE: 0.25mm nozzle

@joantabb

This is like a foreign language to me. I just ordered the 0.25mm nozzle from the prusa site... found it. I don’t think the 0.2 mm one I got from Amazon was compatible. I just kept getting error messages 🙁 I’m assuming I need to use prusa nozzles only and the smallest I can go is 0.25 mm 

RE: 0.25mm nozzle

Prusa make profiles available for 0.25, 0.4, 0.6 and 0.8 mm nozzles. 
it's wise to buy matching nozzles, but they don't have to be Prusa Nozzles...  E3D make the extruder hardware, and many companies make nozzles to work with the extruders... 

be careful to get the correct ones, (7.5mm screw thread) 
Mk8 extruder nozzles have a screw thread that is too short

When changing your nozzle, Make sure that there is NO GAP between the nozzle and the heatbreak!

it's probably a good idea to have a spare heater and spare thermistor in stock...  you will need them eventually!

regards Joan

RE: 0.25mm nozzle

@agaveh

No offense, but if you didn't understand what Joan asked, put back on the 0.4mm nozzle. Nozzle swaps aren't just a simple "do one thing and change nothing else." You can cause more issues with a smaller nozzle, especially if you aren't sure what you are doing. 

RE: 0.25mm nozzle

@joantabb

Thank you so much joan for taking the time to show me these things..... learning so much. I have a 0.25mm nozzle coming in the mail from purse now...... will learn as I go. Thank you for all your help! 

RE: 0.25mm nozzle

@dragon1291

Well. Thank you. I'm learning and know that I need to change other factors. 

RE: 0.25mm nozzle

Posted by: @agaveh

I just changed my nozzle from 0.4mm to a 0.2 mm nozzle I got from amazon. I keep getting An error message when I do the first layer calibration

What is the exact error message you are getting?

.... is this because this machine does not support the 0.2mm? I have the i3 mk3s + . If this is the case, where can I find a 0.25 mm nozzle? I can’t seem to find it on the prusa e store. Help. 

You can use any variety of nozzles on the Mk3, provided they are intended to fit the E3D V6 hotend. I regularly use a variety of sizes from 0.15 to 1.00mm. Simply mounting a new nozzle shouldn't generate an error message, so it must be something in your settings. This is what @joantabb is alluding to. It would be simplest if you'd save your part & settings in a 3MF project file, zip it up, and attach it here so we can see everything you are doing and provide better answers.

In practice, a 0.25mm nozzle is about as small as you'll want to use regularly. Even for printing fine miniatures, features much smaller than that are going to be extremely fragile. I've got a bunch of notes on using various nozzles on the Mk3 here that might be interesting to you.

RE: 0.25mm nozzle

@bobstro

Thank so much for your reply. This is so helpful. I think the nozzle I was using from Amazon is just not compatible with the printer I have.... there was no gap. I’ll wait until the .25mm from prusa gets here in a few days and try this again. I’m looking for very fine detail that the .4 mm nozzle can’t give me. Thank you for your comments and support 

RE: 0.25mm nozzle

Make sure the nozzles you are using are compatible with the E3D V6 series specifically. Others may screw in, but not fit properly and result in a messy filament leak. Here's E3D's nozzle dimension drawing:

Notice the M6x1 thread. I recommend nozzles from:

• E3D (Available from many resellers)
• P3-D (US)
• TriangleLab (AliExpress)

Ignore anybody telling you that cheap nozzles are fine. It's very important that the area around the nozzle be sized for the nozzle size. Here's a pic to show how the collar around the opening should vary based on opening size.

I find the nozzle quality really matters when printing small things with 0.25mm or smaller nozzles. Consider a coated or plated nozzle to avoid filament sticking. You probably won't have much luck with abrasives with a 0.25mm nozzle, so coated or plated brass or aluminum are fine. No need to spend extra on hardened steel (e.g., Nozzle-X).