Search Results for 'b-axis'

[stevnkrnParticipant]

With my first head I got a completely plugged .3 nozzle about three days after I got my Robox. That supposedly lead to the seal failure, at least that is what CEL’s service technician at the time finally determined once it was returned. Back in those days CEL had zero replacement parts, so over the course of several weeks I got a communication from CEL every 3-4 days telling me to try this or try that. None of it worked. Eventually they told me to send it back and they ended up sending me a “rebuilt” head. That one had the B-axis error right out of the box and never did work. Again CEL went back to their standard try this and try that routine for about three weeks before finally admitting that it was broken and asking me to send head number two back to them.

Then they sent me my current head, along with a new main circuit board. I was told that the B-axis error could be caused by a bad solder joint on the main circuit board, which is why they sent the board and a new head. I really appreciated that after all the trouble I had had. After putting in the new head and circuit board I finally had a Robox that worked. During that period I ran the Robox for 4-5 hours per day on average and made quite a few parts. Some were actually quite good, so I finally had a chance to see the potential of the Robox.

Unfortunately, that success was short lived because three weeks after installing he new head and circuit board the bowden tube blew out of the extruder. It took about 1-1/2 weeks for CEL to respond to that service ticket and ship me out one of the new bowden tubes (Thankfully I just got that today). I was not able to get my original tube to stay in initially, but after trying for several days I eventually found a way to keep the bowden release collar out, which allowed me to keep the bowden in long enough to make a few parts. Then the seal failure happened that I showed in the original post of this thread. It looks identical to what my first head looked like when I sent it back, so I know its a valve seal failure.

Currently I can run parts, but it does not take long for plastic to drip down out of the head onto any parts I am making. It really makes a mess of the parts so it is not even worth doing. I invested in some dental instruments to try and scrap the plastic out from inside the head, but I just can’t clean out enough to make a difference. The heads cool down too quickly and I can’t get to all the places the plastic has gotten. So now I impatiently wait for CEL to respond to yet another service ticket, debug the failure, authorize me send my head back, and eventually send me a new head.

I have what I assume to be blocked nozzle with ABS and on top of this attempts to purge are often met by B-axis errors. The B-axis error I live with while I wait for a support ticket response…it only means about 1 in 3 prints are duds, the other 2 are fine.

 

I have my second blocked nozzle in a week now. I know that this is not a problem unique to the Robot CEL, and is the lot of the 3D newbie and Robox early adopter user like me…

 

Assuming I can deal with the BAE (common problems deserve simple acronyms), how would I unblock the nozzle? The last time it happened I was using PLA and it unblocked after a material change, purge etc.

 

Do I have to remove the head etc? Should I keep trying purges until the constipation clears? What about the apparently futile “Eject stuck material” processs?

 

I am happy to try removing the head. In for a penny and all that. Did not expect to become a Robot 3D printer technician by the end of 2014 but what the heck right?! Already I have attacked a z-axis threat by adjusting screws and gantries, B-axis errors by jiggling cables (unsuccessfully) and now this, all in the space of a week! I didn’t even know what a gantry be 10 days ago!

 

Thank you and a productive 3D print season and new year to you all.

I have read the previous posts about this, but unlike the z-axis error which I have also had the pleasure of, I can’t seem to work this one out. I have tried manually pushing in the ribbon and power cables into the back of the print head and the wall of the Robox. The other instructions to repair this error I can’t follow. This is an intermittent error which I have had with both PLA and ABS prints and requires cancel of print job.

 

Has anyone else experience with this error and its fix?

[drfreiParticipant]

Great responses. I have no doubt now that there is no soft door open button on my OSX version of Automaker. Also that advancing the bed only works sometimes to open the door. However, a business card workaround is feasible and this is the least of my worries with this machine (see post B-axis error).

[MagelanParticipant]

You can read this thread:

http://www.cel-robox.com/forums/topic/b-axis-stuck-error-2/

 

Hope it helps.

Magelan

 

For the third time since September I’ve got a defective head. Large amounts of plastic are accumulating behind the nozzles that occasionally melts and drips all over my parts. This is just a few days after popping my bowden tube for the first time. After three days of waiting for a support ticket response, CEL agreed to send me one of the new bowden’s, which I have yet to receive. While waiting I tinkered with my machine and finally got the original tube to stay in long enought to make a few parts. Unfortunatly I now have what appears to be a valve seal failure. This looks to be the same failure I had on my first head and that was diagnosed by CEL to be a bad seal. My second head was replaced due to the dreaded B-axis stuck error. Has anyone else experienced this blown seal issue? Is it repairable? Is it just bad luck, or is there a serious design defect in this head design?

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[Ed_backer909Participant]

I had to “replace” my head unit for errors to go away. CEL offer the online ‘solution’ that trims some plastic and loosens some of the screws that work the B-axis motors. I had some luck sticking with JUST the draft nozzles and setting until the error was added to AM. Then it gives that error Every time and you can’t even use the printer at that point.

Now with new Bowden Tube, new Head and just sticking to one Material (PLA for now) I have see some fair prints… finally after 4 months.

 

[AimdyParticipant]

Could be related to the b-axis error which also stops the head, but it literally stops the head even from heating and you get an error message + red light flashing. Maybe opening another ticket and waiting for a response from Cell would help if others are not able to find an answer. I also planned to send my head back, but I will hold off on it now to see how it turns out. Please keep us updated.

[AimdyParticipant]

you could also manually purge and push the stuck filament out of the head that way. For B-Axis error, it helps to make sure the head is nicely secured when placing it back on, also unplugging everything usb and main power source, and re-plugging everything making sure that the usb is plugged to the computer before turning robox on has been recommended in an other thread on this error.

[DavidParticipant]

B-Axis errors…

[BHudsonParticipant]

@bespokeproductdesign http://www.cel-robox.com/forums/topic/possible-fix-for-b-axis-stuck-error/

[GrimtechParticipant]

@Bhudson

I concur entirely, I found the exact same thing with the micro switch and the re-centering of it myself.

The set screws being steel, locate onto the magnet set onto each side shown in attached image. I cant see how they act as an endstop though.

I took them to act as “tensioners” to slightly alter the positional relationship/friction between the posts molded into the case halves, and the the rotating circular black disc.

I also have a feeling that the motor in my head was running slowly and under powered. As if not enough power was being supplied.

I took the power cable from the back of the print head backing plate, and very slightly tweaked the openings of the female power connectors in the jack plug on the cable.

After re-installing everything, the head motor sounded to operate much faster in speed and for a shorter period of time when switching nozzles using AM. I also have not had the b-axis stuck error reappear - fingers crossed.

Some days it does feel as if we are trying to reverse engineer CEL’s designs……..

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My house if full of bits of plastic! Bristol, UK