More RoBo3d Antics.......

OK, i finally got my printer back after the board went down . i have it connected ready run and she sounds great . bout to have the smell of melting filament in the air. cant wait. i load in the calibration block and off we go. that smell the blue lights the hum from the printer. finally i can start printing things ... well damn it only prints about 1/3 of the block and it jams so gotta fix that . try it again and same result . hmm. filament moves freely , if i turn the gear it extrudes . hot in is at 210 like Jerry told me but still cant get past the 1/3 mark.


as i sit here and type this it gets to the 1/3 mark and nothing so i stopped it and it continues to just ooze blue filament but want print it. so my question to whom ever is..... WHATS WRONG WITH IN NOW.

 

it is still working on the box .just no filament . im using matter . everything seems normal it just not able to print the box but i did get it to print another item that takes the same amount of time with no problem . not sure whats going on i do know i have the new "experimental" head lol

 

No it actually just looks like it started to melt . Really don't need to do anything to fix it just when the gear is able to be turned by hand it will feed .

 

I did notice that u can't spin it free hand if it's working or if u pause a print . When it is printing the gear will turn back every now and again I'm not sure if it should but it does . Meaning as it works and pulls the filiment it will rotate the opposite way just for a second I'm not sure if this is causing the problem

 

Well since we have that out if the way . I'm not to sure what else is going on then . It just stops pulling the filiment . Jerry mentioned the temp on the new head but doesn't seem to help really . Any better ideas ?

 

Can you try a simple test cube? It could be the model your printing and perhaps it didn't slice correctly. Try a simple cube and see if that works. In fact, go to thingiverse and download one of the calibration cube to see if they print.


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This is literally the first prints I have done on it . I would think that while they are testing them that they would notice this . If the printer had been running a few months or so I would completely understand . And upgrading a just out of the box machine is crazy . I want to see what she can do before I dump more money in it . But to a

 

U have done that but seems like it just won't print anything after about 2 minutes

 

Do you have a fan on the ramps board?

Did you try a different test print that you did not make and that you've downloaded from a source that is known for good prints?

How long does matter Control report that the print will take?

Some if the things to consider.


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Yes the board has the fan going . I tried a few different prints but same issue and the cube I use is from matter

 

Matter says about 6 min

 

well after a ton of trial and error i have found that im no closer to fixing this than i was yesterday. i really think the gear that pulls filament inst doing its job. it will extract it fine but even at times when i try to manually turn it to pull filament with wont.

 

It really does sound like the hobbed bolt is clogging. A grooved hobbed bolt from ebay will be $5-12 very well spent. You can also increase the filament tension spring either by adding more washers or by replacing the springs with beefier ones. You may also want to decrease the retraction acceleration, speed, distance, and when retraction occurs. These are all things I've had to do to stop the hobbed bolt clogging and prints failing. Oh, and also make sure you build/print a spool holder that uses bearings so the hobbed bolt isn't pulling against any unnecessary resistance, also something I had to do.