Happy new year my Atom friends.
As some of you might know, I got some problems with my hotend last time. It was clogged with PTFE Tube.
After disassembling everything and reassembling it, I got - who would've guessed - new problems.
But first things first.
1. About that PTFE Tube - My old one was "quite short" and was >stuck< in the lower part of the hotend. Maybe 0.5cm above the heating chamber above the nozzle, where the PLA is "collected".
When I tried to measure the length for a new one, I've seen that the newer one is "not as thick" as the old, so it won't get stuck. It just slides right up through to the nozzle. Can this be a Problem?
2. I then printed an iPhone holder for my girlfriend. Had one problem that comes in question 4 (front right corner), but one more that has more gravity to it - A wobble in every layer. Systematically. I cannot imagine how this happens as I didn't change anything while reassembling. Only thing I can imagine is that PTFE Tube inside that hotend nozzle, but I cannot explain logically >why< it is like this. Here are the links to the pictures of the part:
http://img4web.com/i/7FGENQ.jpg
http://img4web.com/i/823QHC.jpg
http://img4web.com/i/JKZD84.jpg
http://img4web.com/i/WEGDGV.jpg
Any ideas how I can get rid of that?
3. Tried to print some parts for my other printer. Should've been no problem. As i calibrated my extruder (Repetier 100mm equals ~102mm, setting esteps for Extruder to 192,XX resulted in Repetier 100mm => Extruder 100mm) my parts got quite nice, with a measurement of approx. +/- 0.05mm.
BUT! Holes came out >too thick<. As i tried to put a smooth rod inside of one part, the hole was 0.3mm too small on right and left (X/Y Axis), Top and downside (which was on Z_Axis) had the 8mm which it should've had.. Had to drill it and had some work of getting that part in. Was wondering where this cames from as other measurement is quite right.
4. and last one
When I print parts, I usually print them in the middle of the glass bed. No Prob so far.
As i printed the parts for my other printer, I organized them around the bed, using as much space and less time as possible. Good Idea, bad thing for my printer. As i usually do Auto Level and Z-Offset measurement once a week and after every disassemble, I thought everything would be alright.
First layer in the middle of the print bed => Nearly excellent
First Layer on the left side => Gross, got a little bit destroyed. Z-Offset was too low on this one.
First layer on the right side => Well.. It stuck. But the Z-Offset was too high on this one.
Same goes for back side => Too low; and Front side => Too high.
I was wondering why this happens as G29 should compensate for that?
http://img4web.com/i/PVDVW9.jpg
<-- here you see left part being in the middle of the table (good) and right part on the front side, as more it goes to the front, the lower the z-offset gets.
http://img4web.com/i/QV2UUZ.jpg
<-- here is the front part, being on the right side. You can see that the printer didn't really "push" the filament on the bed and instead just laid it down.
http://img4web.com/i/RW8QFA.jpg
<-- in this one, on the front part, you can see that the second layer was put on it quite nicely, although I have typical travel marks on the part. But anyway the first layer is ruined, resulting in a bad part...
Okay. Sorry guys that I wrote soooo much. But I tried collecting some things and put them together here.
Thanks for any help you guys can provide, I count on you
:)
Greetings and have a nice day,
Joschka
翻譯年糕
Clarence Lee
2016-01-04 17:59:04
Joschka Friedl
2016-01-04 18:13:25
Hi Clarence
:)
Thanks for your fast answer.
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Clarence Lee
2016-01-04 18:15:24
4. It's possible the screw for z min probe tension & cable collector effect the G29 result correctness.
Joschka Friedl
2016-01-04 18:20:11
4. Oh... well yeah, first G29 probings resulted in the printer going crazy in the air because endstop was always open. I cancelled that one, screwed the screw in ('til click) and did Auto-level again. First row good, second row good, in the middle agai
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Clarence Lee
2016-01-04 18:22:00
Not really, if your cable collector interference or mechanical problem still there. It won't help...
Do more check on G29 each movements
Joschka Friedl
2016-01-04 18:25:01
cable collector has no tension on it, that one is for sure. Have to look for that screw again, although nothing seemed odd on that one. If I can't find anything there, are there other options?
Anyway, got any ideas about that second problem?
:/
Joschka Friedl
2016-01-05 07:28:40
Clarence Lee
2016-01-09 00:00:14
Is 2. STL available or even your gcode..
I could verify how I prints
Joschka Friedl
2016-01-11 22:31:12
Hi Clarence,
After long test phase, I found that someting got stuck between the Hotend and quick connector Tube. This resulted in the whole hotend just wobbling around the same style in every print - resulting in that print above. Fixed that now
:)
Now I just have to get along with that retraction thing in my prints.
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