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ok , so i try to print that owl, at the first print (the black) it start to do bad printing about 1.5 cm above that legs, and he stop printing at the point you can see in the picture.
at the second printing(the red) he just stop printing at the same place he start to do bad printing in the last work,
when i say he stop printing i mean that the filament stop getting out from the nozzle, the printer itself keep moving like she have to move.
any1 have any idea why can that happen ?

Can you try posting your pictures again? Either click on the Img button above the thread and post the image's URL between the brackets (you can use imgur or a service like that for hosting) or you can upload an attachment below the text field next to options.

I'd try slicing it again, perhaps even using a different slicer. Try Cura or KISS instead of Slic3r if you haven't already.

the pics...

If you want to use Slic3r again to slice it, try setting the layer height to an oddball number so if you were using a height of 2mm change it to 2.05 and slice again.
You are running into the "Repetier bug" and so far as I know there is no fix except things like the above, etc.

Eaglezsoar wrote:If you want to use Slic3r again to slice it, try setting the layer height to an oddball number so if you were using a height of 2mm change it to 2.05 and slice again.
You are running into the "Repetier bug" and so far as I know there is no fix except things like the above, etc.

He stated that the printer still moves like it's printing, just that it isn't printing anything. This doesn't sound like the Repetier bug to me, sounds like nozzle jamming. I had these problems to no end until I replaced my extruder with an E3D.

Lochemage wrote:

Eaglezsoar wrote:If you want to use Slic3r again to slice it, try setting the layer height to an oddball number so if you were using a height of 2mm change it to 2.05 and slice again.
You are running into the "Repetier bug" and so far as I know there is no fix except things like the above, etc.

He stated that the printer still moves like it's printing, just that it isn't printing anything. This doesn't sound like the Repetier bug to me, sounds like nozzle jamming. I had these problems to no end until I replaced my extruder with an E3D.

Good point, Lochemage.

so why did it happen at the same place every time ? that doesn't make sense, if the problem is in the extruder it have to be random problem

Orenfor wrote:so why did it happen at the same place every time ? that doesn't make sense, if the problem is in the extruder it have to be random problem

Another good point. I would still try the slice at an oddball number and see what happens. The worst part of all this is how much time it takes to see results not to mention
the wasted filament.

hehe , yep that hurt every fail i have ... it's like you want to scream F*** but you know you have kid at home ( he doesn't know english ) but you get the point.
besdie that how to the hell i config the KS slicer ? in first look it's look like children slicer game

Orenfor wrote:so why did it happen at the same place every time ? that doesn't make sense, if the problem is in the extruder it have to be random problem

I'm not entirely sure why, but it's not that unusual. The jam can also happen due to actual printer movements at certain areas. For example, a particular spot might do a series of retractions rapidly in a very small area which can cause jams or imperfections to happen in the same spot every time you try the print.

I'm not saying this is definitely your problem, it is just very similar to the problem I was having before I managed to fix it.

and how did you fix it ?

Orenfor wrote:hehe , yep that hurt every fail i have ... it's like you want to scream F*** but you know you have kid at home ( he doesn't know english ) but you get the point.
besdie that how to the hell i config the KS slicer ? in first look it's look like children slicer game

You can download kissSlicer.ini files that contain most of the settings that you would use. It has settings for different types of filaments, color, etc.
You can find them here: http://forum.seemecnc.com/viewtopic.php?f=15&t=1452 Download them and put them in the KissSlicer folder.
There is also a forum at http://kisslicer.com/forum/
This will help you to use KissSlicer.

Orenfor wrote:and how did you fix it ?

Well, aside from getting the printer really well calibrated, I basically solved the rest of my problems by upgrading my extruder. I went with an E3D for my rmax mainly because it was highly recommended, and it also comes bowden ready. I also own a few MakerGear hotends which work well (even though IMO they look pretty ugly) and one J-Head which I plan to re-use on a third printer I am building. All of these I would recommend, probably the E3D most.

I really don't want to say anything bad about the stock rmax hotend, but I had no end of problems when I used it. Most of the problems are what you are having, with random layers not bonding very well and sudden clogs that chewed up the filament, leaving plastic shavings all over the place. There are a number of upgrades you can go with, Trick Laser ball joint arms for example. But if I were to upgrade only one thing, it would be the hotend most definitely, you can still get great prints with everything else stock.

I agree with most everything you said but there are hundreds of users using the Stock hotend and getting good prints. Maybe they don't know they could be getting great prints
by upgrading to an E3D.

so i got cura, set it up to my max, and i keep the default stetting( what can i lost) it use 220C (yes for PLA ) 50mm/s and 4 hours...
i saw it start to print well few layers so i went to sleep...
i wake up at the morning, wend directly to the printer and that owl was looking at me , and i was looking at him smile
i think he do'don't know how much i was happy to see him....

Cura is deftly my man slicer now .... easy to use you can see the layers...
I'm happy
Good morning all....

Nice looking owl! Good job on using Cura, if one slicer doesn't work try another. I'm glad you got it working!