[Cura support material Bug]

Disable the support option "use towers". Do they go away?

 

Unfortunately not, this option was already disabled. Thanks, though

[Cura support material Bug]

Hi,

I have a piece that requires support material under the base, and then has two slots further up. The slots don't need support material so I changed it to "from bedplate only" but once its started printing its put some behind it that keeps falling over and getting in the way. But does nothing.

Photos below, version 3.0.2

[Print head clogged up UM3]

Hi Joakim,

Ultimaker are going to hate me soon for keeping posting this image, but this failure has occurred for multiple people. Our failure:

With this we were able to clear it out, and the fans were unaffected, also the print-cores, once heated to soften the plastic were cleaned and we are still using them. They seem to work fine still.

We did replace the print head on ours, but that was due to other damage and failed bearings. Your print head will probably be okay, so long as you clean it out and disassemble it carefully.

[UM3+UM3E Holes printing under-size]

Hi,

We've recently been having a lot of issues with holes (both round and hexagon) printing under-size. I know this can be common with FDM printers but is there not some way Cura can compensate for it?

Thanks,

[Filament monitor for UM3/UM3E]

Thats interesting, thanks for trying it.

Since one machine ran out again last night :angry: I've just ordered up a micro-switch and we'll see how it comes together.

Just got to find some time when the machines not running to find the pin on the board and wire it in.

[PVA issue and Print stop not functionning]

Hi,

I wasn't aware there was an auto stop, when our printer did this:

The error code that eventually stopped it, although it took a long time, was that one printcore took too long to heat up. The capacitive sensor is used for the bed levelling.

[Yet another "There is an I2C communication error" on large print]

Hi,

I think we've had this one, its caused by the ribbon connection to the head coming loose. We took the split cover off, pushed it back in to the connection and then added a little bit of tape around the wire so the split cover clamps its much tighter.

[Trouble leveling platform]

Hi,

This is actually the same problem we encountered ourselves the other week after we fitted a new head. Fortunately there is a very simple solution.

The fault is that your bed is set too high on the manual adjustment screws, turn them all down a couple of turns and then level it.

How the bed sensing works is that the machine looks at the signal from the capacitive sensor on the head, and when the signal goes flat (stops changing) it knows it is in contact with the bed. If the bed is too high then the head is already in contact when it starts looking an it cannot detect a change.

[Yellow/Cloudy PVA]

The PVA we have always received up to now, or that has come with the machines, has always had a slight yellow tint but been quite transparent.

Upon opening a new sealed roll this morning the PVA was a dark yellow and very brittle, is this normal?

(I haven't tried printing with it yet, its a 3 day print that needs to work so I found another roll we had that looks normal)

[Filament monitor for UM3/UM3E]

If you could find out that would be great thanks

[AA 0.4mm Printcore Ruined]

I believe its the extended X axis bearing.

On another machine we just received the bearings already feel very rough in the head. Some bearings will just run up and down the shaft under gravity, some require pushing (and sound and feel rough) and the one that failed would not move on the shaft when it was in the print head and tilted at a 45 degree angle.

We do maintain the machine well and clean shafts and apply oil etc as required.

Sorry to hijack this thread

[Filament monitor for UM3/UM3E]

Hi,

Great to hear the files are being released soon. What type of sensor were you using if you don't mind me asking?

Is there still a pin on the board to allow a pause/error reading?

Thanks,

[AA 0.4mm Printcore Ruined]

We didn't add any additional tensioners, the springs inside the blocks had snapped. (probably due to high and repeated strain caused by the bearing seizing up)

The bearing fail was quite obvious, the head would hardly move on the shaft and you could see it was missing balls in the linear bearing. (This is the linear bearings in the print head)

[AA 0.4mm Printcore Ruined]

We had a somewhat similar failure with our printer:

Ours was caused, we believe, due to one of the head bearing seizing up, a belt tensioner snapping, and a build up of plastic around the head.....

Fortunately it stopped when it took too long for the second print-core to heat up. It took about 3 hours to carefully dissemble and remove all the plastic. Due to the heat cycling it was mostly brittle inside, only what had been exposed to the air on the outside was very hard.

Its back working after we changed the head now.

[Filament monitor for UM3/UM3E]

Having recently had our printer run out of filament I was wondering if there was a way to easily integrate a filament monitor? It would also reduce our wastage with small amounts of filament left on reels.

I know solutions have been found for the UM2 etc but I cant find anything for the new printers?

A simple solutions would just be a micro switch that the filament is pressed against before it enters the feeder, when there is no filament the switch opens or closes and activates an actuator to hit the pause button.

This is slightly messy however, is there any way of feeding this to a pin on the board?

Thanks in advance.