Enclosure with the ambient sensor
I have been wondering how an enclosure will work with the mk3 due to the added ambient temperature sensor. I had been working on a actively heated design with ducting to keep the electronics cool on my current printer, but would the ambient sensor cause issues with this?
I'm looking to start experimenting with the design on my current printer asap but an considering the changes I will need to make when I add the mk3 to my tool box.
Re: Enclosure with the ambient sensor
I never saw the ambient sensor in action...still gives me a MINTEMP error when the ambient temperature is under 15°C.
Re: Enclosure with the ambient sensor
..still gives me a MINTEMP error when the ambient temperature is under 15°C.
MInTEMP is not implemented yet: https://shop.prusa3d.com/forum/original-prusa-i3-mk3-f30/mintemp-error-t6910.html#p49368
Re: Enclosure with the ambient sensor
MInTEMP is not implemented yet: https://shop.prusa3d.com/forum/original-prusa-i3-mk3-f30/mintemp-error-t6910.html#p49368
Huh, I didn't see Josefs answer. Thanks for letting me know!
@dominic.u: How hot do you want your enclosure to be?
Re: Enclosure with the ambient sensor
I am not sure yet, I wanted to experiment with it to see what the heated enclosure can give you in regards to print quality mainly, but also with more exotic filaments.
definitely up to 60-70°C maybe more but as I have not try this I cannot say if this high will actually benefit anything.
the main reasons for an enclosure which I can see is to stop warping, better layer adhesion and print quality so really as high as you need to do this.
Re: Enclosure with the ambient sensor
We do not plan to limit maximal temp with the ambient sensor yet, maybe just a pop up. But be prepared to encounter increased parts failure rate of parts at temps over 45°C. In the manual we even specify "Working temperature range: 18 °C (PLA)-38 °C, indoor use only" ...
Re: Enclosure with the ambient sensor
Great thank you. This is something to think about, which parts are likely to fail? the electronics?
Re: Enclosure with the ambient sensor
The electronics should be fine with Temperaturesup to 80°.
It depends on what "plastics" are used to wrap it.
In RC-Sports, you easily reach Controller Temperatures up to 90°.
But becarefull with higher Temps when you use Filament like PLA.
In my opinion, theres no need to use Cabinet Temperatures that exceed 40°.
Maybe it is enough to just close the Cabinet with somewhat ventilation because of the Hotend cooling.
Wer freundlich fragt bekommt auch eine freundliche Antwort.
nec aspera terrent
Re: Enclosure with the ambient sensor
Thanks @kai.r3, i dont really know about the electronics side so not sure about this.
The other consideration I am making is that they do not run at 80° while in a controlled area where the ambient temperature is already raised.
as for the plastic parts I can see that these would become soft and would loose rigidity and accuracy as the temperature rose. but this is one of the reasons im trying this, to see where the limitations of it is.
I am planning on controlling it with an arduino controller so you could set profiles for each filament type so with a PLA the temperature would be lower.
Re: Enclosure with the ambient sensor
My heated enclosure reads about 42C near the top and roughly 32C closer to the bed. ABS seems to enjoy it better. I still have to use ABS juice because the base of the part still tends to warp and separate from the bed on the left side (because of the draft from the extruder fan?).
Re: Enclosure with the ambient sensor
How about the stepper motors, what's the max advisable operating temp? I've seen recommondations from 40°C to more than 100°C, would be a shame to hurt those magnets.
Re: Enclosure with the ambient sensor
My heated enclosure reads about 42C near the top and roughly 32C closer to the bed. ABS seems to enjoy it better. I still have to use ABS juice because the base of the part still tends to warp and separate from the bed on the left side (because of the draft from the extruder fan?).
You have a heated enclosure then. What did it improve?
How do you control the heat? Just on and off?
It seems to not be a stable temp throughout is this because it does not move the air about?
Re: Enclosure with the ambient sensor
I can confirm (sorry for cross posting) that PLA / PETG clogs when running in an enclosure with an ambient temperature of 30 degrees measured at the wall of the enclosure (so I suppose near the nozzle it is a bit warmer, maybe even above the 38 mentioned in this thread). I can reproduce this consistently in my enclosure.
Printing with the door open, 0 problems, printing with the door closed guaranteed blockage after one hour.
Defeats the purpose of an enclosure though 😳
Going to install some 120mm fans + HEPA filter to evacuate hot air.
Re: Enclosure with the ambient sensor
I can confirm (sorry for cross posting) that PLA / PETG clogs when running in an enclosure with an ambient temperature of 30 degrees measured at the wall of the enclosure (so I suppose near the nozzle it is a bit warmer, maybe even above the 38 mentioned in this thread). I can reproduce this consistently in my enclosure.
Printing with the door open, 0 problems, printing with the door closed guaranteed blockage after one hour.
Defeats the purpose of an enclosure though 😳
Going to install some 120mm fans + HEPA filter to evacuate hot air.
Hi joris.m thanks for the reply.
It's good to know. I am looking into ways of keeping a constant temperture as much as rasing it with an enclosure.
A bit of background on this. I live in England and as the printer is located in an un heated uninsulated shed it gets very cold. Printing in the recent temperatures of 0 and below gave me huge issues with quality, I have still been able to complete a print.
I want to be able to print any material consistantly anywhere in the world. I think to do this the printing enviroment needs to be controlled.
Re: Enclosure with the ambient sensor
I think moisture might be a bigger issue for you if it's in an uninsulated and unheated shed here in the UK. With all the rain we've had recently the air in the shed is going to be very damp. Do you store your filaments in there as well ?
I have mine in an enclosure just trapping the heat given off by the bed and it runs fine with PETG & ABS. For PLA I normally prop the door open an inch.
Re: Enclosure with the ambient sensor
I think moisture might be a bigger issue for you if it's in an uninsulated and unheated shed here in the UK. With all the rain we've had recently the air in the shed is going to be very damp. Do you store your filaments in there as well ?
I have mine in an enclosure just trapping the heat given off by the bed and it runs fine with PETG & ABS. For PLA I normally prop the door open an inch.
Hi Simon. M
I had considered this as I said contolling the print enviroment. Another way would be humidity. I wanted to have a Desiccant Dehumidifier filter on one vent which would dry the air.
I had not considered that the roll left on the printer had got wet though.
The other rolls are in a foil packet with silica gel packets, so I may try one of those.