Nylon printing  

RE: Nylon printing

According to Prusa's site ( https://www.prusa3d.com/material-guides/ ) you want to probably raise your nozzle temp to 240 degrees and your bed to 80-90 degrees

RE: Nylon printing

@neek

Not the right section, but i'm printing successful nylon (Aprintapro PA12) with nozzletemp 270degrees C and bedtemp 105degrees C with a MK3. Maybe it also works with lower temperatures, but 160degrees C nozzletemp is too low.

RE: Nylon printing

Posted by: @riho

I cant find the right settings. Tried with 150-160C hotend temperature, with 60-70-100C bed temperature. It dows not want to stick very well to the bed and is pretty likely jamming to the nozzle.

Nylon is from HobbyKing, PA-CX12.

Specs from the website:

Specs:
Width: 1.75mm
Weight: 500g
Colour: Black
Tensile Strength at Yield: 60 MPa
Strain at Yield: 0.08
Strain at Break: >150%
Tensile Modulus: 1400 MPa
Flexural Modulus: 1700 MPa
Flexural Strength: 90 MPa
Impact Strength - Charpynotched 23˚C: 14 kJ/m2
Moisture Absorption: 3,5%
Printing Temper: 240-260°C
Melting Points: 250°C
Shore D Hardness: 81

Start with 250C nozzle temp and go up. Consider using glue for better adhesion to bed.

RE: Nylon printing

@karl-herbert

The MK3 is explicitly stated to support Nylon unlike the Mini.

I would like to know why Nylon support is left off of the officially supported materials list for the Mini.

Perhaps there are some modifications that should be made for a successful+safe print.

RE: Nylon printing

@acortelyou

Most likely because it's not advised to run 280C on a mini all the time (same like 300C on MK3). 

RE: Nylon printing

What do you mean by all the time?

A certain duty cycle?

A number of hours at a stretch?

I just want to be able to print a drone frame out of Onyx every now and then with the Mini.

Thanks!

RE: Nylon printing

@acortelyou

It's not necessarily unable to print nylon. It's that nylon isn't a "supported" material; meaning that Prusa doesn't provide filament profiles for nylon on the Mini. The Mini is targeted towards a different demographic than the MK3. It is what it is. 

I printed Taulmann Bridge on my MK3 with good results at ~250c on the hotend. I would think you could have similar results on a Mini.

RE: Nylon printing

@nicholas-m12

Taulman-Bridge profile is listed under MINI in Prusa Slicer.

RE: Nylon printing

I got it almost printing with 170C hotend and 100C bed. It was important to limit the  speed to 25mm/s. I used also a 3mm raft. Everything is starting fine but after around 10minutes the nozzel will be always completly jamed.

I dont have that problem with ohter materials. What can cause the problem? Shall I rise the temperature even more?

RE: Nylon printing

@crawlerin

Really? Good news!

RE: Nylon printing

@riho

Again according to that link I cited above, Prusa claims that particular nylon needs a much hotter temp to extrude. It might put more wear and tear on the mini but that's what the material seems to require.

RE: Nylon printing

Posted by: @riho

I got it almost printing with 170C hotend and 100C bed. It was important to limit the  speed to 25mm/s. I used also a 3mm raft. Everything is starting fine but after around 10minutes the nozzel will be always completly jamed.

I dont have that problem with ohter materials. What can cause the problem? Shall I rise the temperature even more?

Seriously? Spec sheet is telling you 240-260C, people are telling you here to go over 240C and you're still printing with 170C and asking for help?

RE: Nylon printing

@crawlerin

I just ordered it on Monday. Hopefully receiving it soon and can test.

RE: Nylon printing

I reached out to Prusa support directly and this was their response:

We haven't yet tested Nylon at the time of release.

You can print Nylon with MINI just fine, there is also a Slicer profile for it as well 🙂

The product page will be updated accordingly soon.

RE: Nylon printing

Just finished testing and can confirm that with the Taulman Bridge profile both Taulman Alloy 910 and Taulman Bridge are printing perfectly.

Bed temp 90C, Nozzle 255C

RE: Nylon printing

@riho

This is good to know, thank you 🙂