This topic contains 13 replies, has 7 voices, and was last updated by 
Bert Haverkamp 2 years, 11 months ago.
-
Posts
-
If you have filament slip and have confirmed that it is not because of a tangled reel, a flow issue from the head or feed through the extruder, bowden system. Then this might be the solution.
It does require some disassembly so please be aware of warranty limitations. It is best to ask the support team for advice on this.
https://robox.freshdesk.com/support/solutions/articles/1000170584
Please post if this resolves your filament slip error
For official support please visit www.cel-robox.com/support/ and create a ticketHello Pete,
I indeed have a lot of filament slip errors. Every 10-15 layers at the moment with a PLA print I’m doing currently. When I press the button, things move on for a while, without any visible problems. For a while at least..
BTW, I was searching for this page, expecting to see a G-code based solution to limit the errors in software.
Aimdy refered to this page back in february, but I had little time back then to work on it.
Has that page disappeared? Or was it a produce of my imagination?
What is the best way forward, how can we check if we really suffer from the HW PCB fault, or if it is an over-sensitive slippage setting.
Regards,
Bert
@brjhaverkamp That page was a test we did, Filament Slip is not an error in itself but is reporting a fault somewhere else in the system. The filament slip threshold in the test was being used to mask this.
If filament is slipping, rather than suppressing the error message we need to find the cause of the slip.
The default slip threshold is 10 units I think it is 10mm³ but might be wrong. So the filament is allowed to slip for a few mm then it tries, slowing the print speed. If it keeps slipping it pops up the error (or pauses if no AutoMaker is connected).
Because this slip could be anything -from filament tangles/jams to a needle valve not opening and every setting, electrical and mechanical system in between - it is hard to say with certainty what the cause of every filament slip is.
For official support please visit www.cel-robox.com/support/ and create a ticketHi Pete,
I found the M909 setting. It says it is specifying the slip in mm. But then there is an example with M909 S100. 100mm is a lot of slippage. So I am curious what the dimension of the units are.
My slippage seems to have a different cause(or multiple causes). There is definitely some blockage going on. But I can get the nozzle to flow again by simply helping the filament on by hand. Also it seems to be worse when the nozzle is higher up in the print. Above 6cm, it is almost impossible to print. It keeps blocking every layer and pushing the filament by hand doesn’t help anymore.
I have put in a support request.
Regards,
Bert
Hello all,
I’d like to update you with the resolution to my filament slip problem.
I put in a ticket as mentioned before. Robox came back with the advice to put insulation on the PCB to prevent short-circuiting.
While doing that I also opened the extruder and cleaned it out with a brush. There was quite some debris between the gears.
After I put everything together, my robox is printing like new again. At least one object has come out without any errors.
Bert
@brjhaverkamp great to hear your robox is up and running again, thanks for sharing!
Moh
Hi.
Just opened a ticket about this issue and waiting to hear back. 3 day old machine and I keep getting this error fom last night.
Although without doing the work I cannot confirm this, but I thought I might add some context to it.
I noticed this error pops up every few seconds if the machine is vibrating heavily (i.e. fast filling in or something) but once the vibrations quieten down (like when printing smooth lines) I get no errors.
I also noticed that there is a very slight flicker in the LED’s on the extruder head when it’s vibrating heavily. Could the LED issue be sonominous to the shorting pin issue?
Do, or do not. There is no try.
my slip errors occur at random and only with updated software. in 1.01.02 the printer will randomly stop extruding, could be after 2 mins or 2 hours, having sat and waited for it to happen, i have seen that the head carries on moving as printing normally, but stops extruding about 20 to 30 seconds before slip error occurs so its obvious slip is happening. downgrading the software to the version supplied on the usb stick makes the printer then function normally again. as this happens i can only assume it is a software problem, not hardware. i havent tried 1.01.03 yet as the machine is currently working. has anyone else had similar issues?? and yes i did try calibrating everything, repeatedly!!
Hello @dodgydiy, when you downgrade/reupgrade between 1.01.02 and 1.01.01 (? you haven’t specified the downgrade version) you also do it to the firmware?
@dodgydiy one more hardware check, make sure your extruder tension housing is not broken. See link below:
http://www.cel-robox.com/forums/topic/has-anyone-been-getting-tech-support-lately/page/4/#post-14668
Moh
will have to open up and check the housing, hopefully ok as the printer is only 4 weeks old now. downgraded to version supplied with the robox, which is 1.00.17 and 684.2 firmware. will try the new version later this week as i seem to be in need of recalibration again as gaps have again appeared in the print and layers are now bonding very poorly. will get it right one day!!
I have had filament slip problems this last week. It started with a knot in a reel of green ABS jamming the reel and stopping the machine. After that I was getting slip problems. After reading Burt’s post above I took out the extruder unit and disassembled. The knurled drive wheels were full of green ABS that the sharp knurls had shaved off the filament. I cleaned them with a small stiff paint brush and re-assembled and all is ok now.
You must be logged in to reply to this topic.
