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SoliForum - 3D Printing Community → Help/Repair/Maintenance → Prints rippling
hey everyone, Just was hoping for some advice on what to do / calibrate since my prints have been having this sort of rippling effect. Also im getting alot of stray lines of filament from non print moves. Any thoughts would be great thank you!
I Tried doing this same print with 50% infill and fully solid and experienced the same issue both times. (I need it to be firm)
What are you printing with? ie... abs/pla... have you done any of the calibrations? http://www.soliwiki.com/Main_Page#Calibrations what kind of temps and speeds are you using?
I havent done any flow rate or extruder calibrations since i first got the printer a while ago so im sure doing it again wont hurt. Im printing with ABS at 195 on a 100 degree glass and hairspray bed. Ive slowed it down to about 50 all around for the speed in hopes of getting better quality.
The ABS im using ive had out for a while so im wondering if it not being in a sealed dry environment may be an issue?
Check the tension on the idler bearing on the extruder - you want it so tight it hurts to try and move it... an under tensioned idler can cause similar apparent issues to 'temp' problems.
The other thing, just looking at your prints in general, is I'd hand-adjust the extruder VREF. Its been covered a few times, but nutshell version of how *I* do it is; set your extruder to extrude 60mm/min in RH. Then extrude 120mm's, giving you 2 minutes of adjustment time. Then adjust the VREF trimpot on your extruder up and down in tiny increments until you can get the smoothest possible rotation of the drive cog... marking it with a vertical line in sharpie on the motor spindle can help make this even easier.
ABS that has become over humidified (thats the issue with leaving it sitting open, ABS is hygroscopic ) behaves differently - it will produce lots of steam, and have clear bubbles in filament if you extrude it into thin air (the bubbles are the water vapor by-product). Its not to say its not an issue, but I personally wouldn't class this filament as 'over water saturated' as it doesn't appear to have bubbles through it.
Check the tension on the idler bearing on the extruder - you want it so tight it hurts to try and move it... an under tensioned idler can cause similar apparent issues to 'temp' problems.
The other thing, just looking at your prints in general, is I'd hand-adjust the extruder VREF. Its been covered a few times, but nutshell version of how *I* do it is; set your extruder to extrude 60mm/min in RH. Then extrude 120mm's, giving you 2 minutes of adjustment time. Then adjust the VREF trimpot on your extruder up and down in tiny increments until you can get the smoothest possible rotation of the drive cog... marking it with a vertical line in sharpie on the motor spindle can help make this even easier.
ABS that has become over humidified (thats the issue with leaving it sitting open, ABS is hygroscopic ) behaves differently - it will produce lots of steam, and have clear bubbles in filament if you extrude it into thin air (the bubbles are the water vapor by-product). Its not to say its not an issue, but I personally wouldn't class this filament as 'over water saturated' as it doesn't appear to have bubbles through it.
Thank you for the great advice, Ill give this a try in the morning and see where it goes.
I think Adrian is spot on with his advice. If that doesn't fix it I would say you are dealing with the early stages of clogging. of some sort. I only say that because your pictures remind me of one of the last prints I attempted with my stock SD hot end.
btw I think the line that gets dragged around is too thick to not consider it's is affecting your print.
it might be over extrusion OR print temp... (like the plastic doesn't have time to cool off)
but in general, the dragging line are retraction issue. (unless it's clog related)
i remember having to reduce the retraction speed. and set retraction mm.
Took a few days but i finally got around to calibrating everything. I did the VREF and noticed that the extruder stepper is now turning allot smoother. The problem im having now is my print bed doesn't want to heat up, any ideas?
You might want to check all of your connections and make sure one of the thermistors isn't shorted out.
It's probably just something simple like that.
everything seems fine its reading the temperature just not heating up, any other ideas what to look for?
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