Tall Prints failing
I assembled my printer 2 months ago and it has been a joy. So well built and designed.
All my prints have been coming out beautiful using the original silver pla or on of the 6 other pla abs reels of different materials.
My problem started when I tried to print a reel case found in Thingsverse.
Everything was printing smoothly until a little past the 1/3 mark. After that there was what seems to be non-adherance of the layers. (stringy, goopy mess)
which after that became printing with no extrusion.
Cleaned out head and re-did several small SD card based prints. Perfect.
Tried to print Castle found on SD.
Started fine, went to bed and when I came back the first 10 mil printed and after that it was printing by itself in the air with no extrusion.
Went over all my calibrations, put on new nozzle just in case, Found set screw an extrusion feeder a little loose and tightened hard and put threadlock to stop and vibration from loosening it. Printed another series of small parts and they come out perfect. Tried Castle with silver prusa pla and original sd card castle gcode file. Printed to 30 mil and then did the same thing.
What is happening? Wasting a lot of pla for nothing.
Any answers? Ideas? Suggestions?
Re: Tall Prints failing
No idea... 🙁
in no particular order, here are things that have caused problems for me, in the past -
1, mains failure
2, Toshiba Flashair SD card goes flakey after indeterminate period...
3, incomplete Gcode from slicer...
4, Laptop rebooting because of software update when using pronterface
5, Laptop going to sleep when using pronterface
6, part cooling fan causing thermal runaway
7, cable bundle issues, the cables behind the X carriage, concentrate the flexing into a small section of cable length, this can cause stress fractures in the cabling which can in turn cause safety features to kick in and stop the print.
8, cold end fan stopping and causing lam in extruder,
9, rubbish, causing blockage in extruder,
10 excessive retraction causing blockage in extruder,
11, PTFE liner failing and blocking extruder.
12, filament breaking due to age.
13, Mesh errors causing missing sections in G code
do any of these ring a bell with your symptoms?
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: Tall Prints failing
Your description reminds me of this post:
http://shop.prusa3d.com/forum/original-prusa-i3-mk2-f23/bizarre-print-fail-later-in-print-t3949.html
The problem there turned out to be a bad connection in the wire bundle that only triggered at higher Z levels, causing the thermal couple to register incorrectly. Do your failures look like those? Can you replicate it my moving Z up and jiggling the cable?
Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage or loss. If you solve your problem, please post the solution…
Re: Tall Prints failing
Joan and Aaron,
Thanks for the suggestions.
I had or did try out or check all your listed items.
I did not do anything.
Tried a vase and it printed ok.
Almost like if it the print time is to long the extruder or related gives up.
If you or anyone has any more ideas/ suggestions I would be happy to hear them as I am at a point of not knowing what else to try.
Sam
Re: Tall Prints failing
Sam,
A picture is worth a thousand words...
I did have something like this with one roll of filament. About half way through the roll it would stop extruding. I would reload it, and it would be good for a while. My guess was the roll had bad tolerances. No other roll has done it. Have you tried a new roll?
--ajs
Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage or loss. If you solve your problem, please post the solution…