Nozzle temperature

[Microcan @microcan My Robox is a Blue Commercial Version]

My robox has a problem with the nozzle temperature. Last night I started a print. The estimated time was 1 h 40 minutes. After I watched a game of soccer the print was not finished yet. I noticed that the printer paused, printed, paused, printed, paused, etc. Automaker showed that the nozzle temperature dropped below 190 degrees and the target temperature was 195 degrees. The robox heated the nozzle to above 190 degrees printed a small bit and pauzed again. Why is the temperature not heated to the target temperature? The nozzle temperature was oscillating between 189 and 191 degrees.

Can you give me a hint what the problem is and how can I fix this.

[pelgrim @pelgrim My Robox is a Green Kickstarter Early Bird Belgium, Flanders]

I have seen also this behaviour since the last AM update.
The first few minutes go fine, after that it keeps pausing from time to time,
although it finishes the print as it should be.

java (EE), JavaFX, HTML, GIS) programmer, database wizard, framework inventor, looking for a job ! http://roboxing.com/wizards

[Microcan @microcan My Robox is a Blue Commercial Version]

@pelgrim

This is the same behavior as I see. On the model you see that this happens, the quality of the model is a bit lower. In my case this is at the point where the model has a thin part (1 mm wall). Does AM switch to another algorithm here?

[pelgrim @pelgrim My Robox is a Green Kickstarter Early Bird Belgium, Flanders]

made also a youtube video of this behaviour.

java (EE), JavaFX, HTML, GIS) programmer, database wizard, framework inventor, looking for a job ! http://roboxing.com/wizards

[pelgrim @pelgrim My Robox is a Green Kickstarter Early Bird Belgium, Flanders]

raised a ticket for this

java (EE), JavaFX, HTML, GIS) programmer, database wizard, framework inventor, looking for a job ! http://roboxing.com/wizards

[Microcan @microcan My Robox is a Blue Commercial Version]

Thanks for the video looks the same at my Robox.

[Severance @elussya My Robox is a Green Kickstarter Beta]

I’m on my ‘holdout’ print head right now- and it’s print temp is oscillating quite a bit- usually only staying in the printing range for short bursts it seems.

 

Anyone have any suggestions on this?

Attachments:

You must be logged in to view attached files.

[Terry Taylor @n6mon My Robox is a Green Kickstarter Early Bird San Lorenzo, Ca, USA]

When I had that problem, I found that the DC (red and black wires) power connector to the head carrier was not inserted tightly the back of the head carrier (it seems to work loose regularly),

 

Terry Taylor

[pelgrim @pelgrim My Robox is a Green Kickstarter Early Bird Belgium, Flanders]

I had this problem since the last version of AM, without doubt.
So logically I blamed a change in AM of firmware.
This went together with my first layers that were smeared out,
something that occured also right after the update to the same version of AM.

Now, after a callibration of nozzle height, suddenly all problems are solved.
First layer, that’s easy to understand with a changed nozzle height,
why it occurred right after an update, not so understandable.

What nozzle callibration has to do with nozzle temperature fluctuations is a real mystery.

But hey,
I have the best prints since I got my robox, and I never had real reasons to complain in the first place.
Only a few riddles …

java (EE), JavaFX, HTML, GIS) programmer, database wizard, framework inventor, looking for a job ! http://roboxing.com/wizards

[Microcan @microcan My Robox is a Blue Commercial Version]

I think I have a clue about this problem. I printed some small parts together with larger parts and it printed fine. When I had to reprint a small part the temperature oscillating print temperature should be 230 degrees but the temperature was oscillating on 225 degrees celsius.

Probably the Robot is using some kind of PID control which is known to cause these problems if the PID parameters are wrong. I guess that these parameters are correct for the general case but to not work for small details on parts.

[Pete @pete My Robox is a Blue Commercial Version CEL HQ Bristol UK]

I skimmed this, I doubt any of your issues are related to one and other, best to create tickets.

For official support please visit www.cel-robox.com/support/ and create a ticket

[Microcan @microcan My Robox is a Blue Commercial Version]

@pete

I look if I can narrow it down to some model that has this problem. The only thing I know now that it has something to do with small details. If I have a repeatable problem I can send you a STL file. Is it possible to produce a log where you could see the problem?

 

• This reply was modified 6 months, 1 week ago by  Microcan.

[Author]

Posts