Lorei Maximum Temperature

[Christopher Hart]

What is the Maximum Temperature on the Lorei duo, with heated bed? Is there a setting somewhere in firmware? Software?  

Carbon Nylon test bar photo (pencil for scale).

I've been experimenting with CarbonX filaments (Carbon/Nylon from 3DXtech), printing at around 260-270deg with bed set at 105-110deg and sometimes it works and sometimes I get a "Max Temp" error on the LCD during the print and it stops. Been using Simplify3d. At lower temperatures, layer adhesion is not great but maybe there are other parameters I need to adjust.  I'll be trying Carbon/PETG next (at lower temperatures recommended: 230-260extruder, 70-90deg bed temp). 

Still learning. Thoughts anyone?

[Carlos Guerra]

I'm using BuildTak with the heated bed and I got all my problems solved.

May be you can try it out with your material

[arg2761]

Search for these topics: THERMAL RUNAWAY ERROR and Err: MINTEMP.

You may need a silicon sock to help stabilize the heated block temperature (maybe).

Regards,

Al

[arg2761]

Christopher:

By the way, I am interested in printing with that material. as soon as I get a heat bed.

Regards,

Al

[William Crane]

In my experience, min-temp is a broken thermistor.
Max temp can also be a faulty one as well. I only encounter this one when handling the thermistor by hand.

Hijacking your thread.
The current issue I have is.
I have a Max temp, followed with a kill command.
I can heat it up and shut it down and heat it up and it'll have high oscillation cycle however. The variables are I'm not sure if the heater is 12V or 24V? as I put a different one in the block than I was using previously. As well as the nozzle I have in has better thermal coefficients as its tungsten not brass.

I cannot run auto PID tuning as it keeps giving errors.

After I get this hashed out I was thinking of including auto tuning into my g-code, however after it spits out the numbers will it store the variables or will I have to write a line to store and recall to input them?

[William Crane]

Per your question again.
I only otherwise encounter max temp error after reaching 272 degrees C, I have read that to change the max temp you'll have to edit the variable in the firmware and upload it to the board.

[Christopher Hart]

"Max Temp Err" only happened durring printing of the Carbon/Nylon at temps approaching 270deg/110bed and after I changed nozzel to an E3d hardened steel. 

I've since been test printing Carbon/PETG at 240/80 and have not seen an overtemp error. These filaments make great looking parts, but I'm finding that the raw filaments are quite brittle and have had a couple of long prints fail due to filament break at the extruder. I need a better spool support to aviod kinks (I was printing from small sample coils not on a spool). 

Otherwise, I'm amazed at the range of capability of this Duo. I just have to keep adjusting the z-offset after nozzel and  material change which is still too time consuming. I do need a faster way to dial that in. 

Also, I'm still running on original Firmware- Should I expect any significant benefits from doing a firmware update? I suppose that's for another thread. 

Thanks for the feedback! 

-Chris

[Christopher Hart]

Just noticed in FAQ's on kickstarter page that Josue says you need the cooling upgrade for nylon, or temps above 250d. I think he said those can be purchased from E3D for like $12. Anyone know any details about that? 

[Sandro]

The firmware caps the maximum temperature that the hot end will attempt because the thermistors that are used by default only have a reliable range to about 270c.  Past that you need to switch to a thermocouple (like the PT100 sold by E3D).  Those thermocouples will also need an amplifier board as well though...

[Carlos Guerra]

Whats the benefit of using CarbonX?

Sounds interesting

[arg2761]

Check out this similar filament at MatterHackers

https://www.matterhackers.com/store/3d-printer-filament/nylonx-carbon-fiber-nylon-filament-1.75mm

Al

[DroneOn]

Max Temp is set to 275 degrees in firmware.

// When temperature exceeds max temp, your heater will be switched off.

// This feature exists to protect your hotend from overheating accidentally, but *NOT* from thermistor short/failure!

// You should use MINTEMP for thermistor short/failure protection.

#define HEATER_0_MAXTEMP 275

#define HEATER_1_MAXTEMP 275

#define HEATER_2_MAXTEMP 275

#define HEATER_3_MAXTEMP 275

#define BED_MAXTEMP 150

[Christopher Hart]

Yes that NylonX is also supposed to be good. My interest was curiousity mosly... higher stiffness and tensile properties than the typical materials PLA, ABS, Nylon PETG. I'm pretty much just exploring what various things I can make on this printer, so I just wanted to try it out.  After experimenting for a few days, I think I like the Carbon/PETG combo better than the nylon as it seems to be a little tougher, prints at a lower temperature, no problem with bed adhesion.  I only mentioned 3DXtech products since I was able to purchase small sample quanties to experiment with ($8each) before spending ~$50 on roll somewhere. As you pointed out are other cabon fiber filaments out there too. Wen I picked up my printer in person (Dec), Josue showed me prints he had made with Robo 3D Carbon Fiber PLA that looked really great, too.       

Thanks again for the resonses.