[Bridging Settings With Modifier Block]

Hey all,

So I've been experimenting with bridging settings for ABS and have some settings I like which entails having a lower density for the bridge layer. This all seems to be working as expected and no questions here.

What I found interesting is that if I apply a block to my bottom layer and set it to "Mesh Type: Modify settings for overlaps (Cutting Mesh)" that I have something interesting happen. Even through the bottom layer is a complete skin the slicer detects the next layer as a bridge and goes and prints it at the lower density. Seems like the slicer is detecting the bottom layer as empty because of the modifier block and is attempting to bridge it.

 

I'm seeing this in cura 4.4, 4.8, and 4.11

Attached is a picture showing the bottom 2 layers of a cube where I have done this.

 

Anyone have any ideas how to keep the experimental bridging settings enabled while also being able to add a modifier as I have done?

[Ultimaker S5 Cooldown With ABS]

49 minutes ago, Smithy said:

It is/was also annoying for me, so I did some research on the firmware and here is a  solution how to get rid of the cool down phase. 

 

Do this hack on your own risk and be very careful when you edit the file. Any mistake can brick your printer! And you have to do the same steps after the next firmware upgrade.

 

You need to enable the developer mode on the printer and then ssh into it. Username root, Password ultimaker

 

First we should enable SSH permanently to be on the safe side. When you enable the developer mode in the menu, it is just a flag to enable ssh during the startup of the printer. But when you have an error in the file, the startup will be interrupted and the SSH daemon will never be started. Therefore we enable it per default to always have access to the printer in case something goes wrong.

 

For older firmware versions < v6.0 do:
systemctl enable dropbear
 
For the newer ones > v6.0:
systemctl enable ssh

 

Then you have to edit the file 

/usr/share/okuda/components/progress/PrintProgress.qml

 

There you can change the temperate which is considered to be safe in line 10:

property var safeToTouch: Okuda.SystemStateProxy.printBed.temperature < 60.0

Set it < 100.0 for example.

 

Then just reboot the printer.

 

You should have some knowledge how to edit files in Linux. I am using the vi editor, but it could be strange to someone who have never used vi before. 

 

And again, you could brick your printer when something goes wrong, so do it on your own risk. 

 

Amazing, I'm gonna give that a look next week!

[Ultimaker S5 Cooldown With ABS]

1 hour ago, JTMD said:

I'm with you on this..  I'm also an ABS guy.
I think I short-circuited the process once by cycling the power on the machine.

 

Yeah I tried power cycle but when it comes back on it still required the cool down.

[Ultimaker S5 Cooldown With ABS]

The mandatory cooldown time forcing the bed to drop below 60C is really quite frustrating when trying to print higher temp materials which require enclosures and higher ambient temperatures. When I'm printing ABS with a 100C build plate I really need to let it warm for like 30-60 minutes to ensure that the ambient temp in the printer is high enough that I don't get warping and layer splitting. If I have a failed print due to something like I just did where the autolevel decided to ram my nozzle very far into the build plate at one spot I basically loose 2hrs of print time as I need to let the thing fully cool down. I then need to let it fully warm up and get the air back to the required 35C ambient before I can tell it my print has been removed and then restart my print. I get this is a safety feature to prevent people from trying to rip prints off a hot glass bed and either damage themselves or the printer but there needs to be an advanced options menu to skip this for these kind of scenarios. The skip cooldown option that comes up doesn't seem to do anything here when it isn't greyed out.

I am missing something basic or is there a way to disable or change this safe cooldown temp with a variable or something? At this point I'm basically taking files home from my lab and printing them on my home printer (a Voron 2.4) as it does ABS better than this one. Users at some of our other sites ask me if they should replace their Prusa MK3s with S5s and honestly I'm having a hard time saying yes. At face value this printer will handle these higher temp materials better and hardware wise it's superior but then the limitations int he firmware for stuff like this make it very hard to recommend.

[New Ultimaker 5 With Tough PLA]

Hi all,

So I just set up my new S5, installed Cura 4.8.0, and sliced up a model to use the roll of black tough PLA that came with the printer. Using an AA 0.4 core on extruder 1 and not using any material yet in extruder 2.

 

The default print temp for Ultimaker TPLA in the material configuration says 225C but no matter which of the default slicing profiles I've used it drops the temp by 10-15C. Seems like layer heights of 0.1 and lower drop to a 210C printing temp and 0.2-0.15 seem to be at 215C. The printer jams at these temperatures and I need to have it around 225C to 230C to it just grinds up the filament. 

What I cannot figure out is why the profiles are subtracting temperature from TPLA and how to fix this in Cura. I'm still quiet a few versions back on my home printer (Ender 3, cura 4.5 I think? it was before these default quality settings were added) and don't have any of these issues with profiles there. I have not changed the profile default temperatures so if I change to another material then the temp changes as it should.

I need to set this up for end users in the building so I really want to get it where they just select the profile and material and then it'll do the settings but if it keeps auto correcting temperature based on some math somewhere in the software that I cannot see/edit and which is obviously wrong for the printer then I'm going to make to make a bunch of single profiles for every single combination I have in the building with the temperature hard coded in the profile settings. I'm not new to cura but I'm kinda fried digging through config files and not seeing where it is subtracting this 10-15C from the print temp in the materials section.