SD Card Benchy a Hot Mess (DIY Kit)
Hi All - I've printed the Benchy straight from the SD card using the included Silver prusament PLA (included in DIY Kit), but it's turning out a hot mess and I'm not quite sure where to start. I've also not seen anyone's Benchy look this much like a spider's nest before... It took me a couple nights of printing calibration squares before I got to printing this benchy, so is my filament definitely wet and that is the cause of most of the other issues as well?
Any help on any issues you see would be greatly appreciated.
Thx in advance,
Derek
Re: SD Card Benchy a Hot Mess (DIY Kit)
Since you mentioned playing with calibration squares first... why and what for? That is: what did you tweak?
Did you slice this or is it a direct sample gcode print?
ps: +1 on Vintage's suggestion below. Easy to adjust, too.
Re: SD Card Benchy a Hot Mess (DIY Kit)
IIRC the last time someone posted similar symptoms the cause was loose/improperly set setscrews on the bondtech gears; quite probable as it could cause the filament not to retract and ooze, making lots of strings. I'd start there.
Re: SD Card Benchy a Hot Mess (DIY Kit)
Nice ! Benchy in the spider-web 😆
Thomas
Re: SD Card Benchy a Hot Mess (DIY Kit)
Nice ! Benchy in the spider-web 😆
Thomas
I recently printed a Groot in Wood that was pretty stringy, and the resulting webs were cool enough I left them. Being able to do it intentionally would be very cool, indeed. Hoping to hear back with the resolution to this particular issue for my "I need to do this" tool box.
Re: SD Card Benchy a Hot Mess (DIY Kit)
Nice ! Benchy in the spider-web 😆
Thomas
I recently printed a Groot in Wood that was pretty stringy, and the resulting webs were cool enough I left them. Being able to do it intentionally would be very cool, indeed. Hoping to hear back with the resolution to this particular issue for my "I need to do this" tool box.
wouldn't the easiest answer there be "print hotter and disable retractions"?
Re: SD Card Benchy a Hot Mess (DIY Kit)
IIRC the last time someone posted similar symptoms the cause was loose/improperly set setscrews on the bondtech gears; quite probable as it could cause the filament not to retract and ooze, making lots of strings. I'd start there.
This sounds about right or the fillament is sitcking somehow and preventing retraction.
Re: SD Card Benchy a Hot Mess (DIY Kit)
I recently printed a Groot in Wood that was pretty stringy, and the resulting webs were cool enough I left them. Being able to do it intentionally would be very cool, indeed. Hoping to hear back with the resolution to this particular issue for my "I need to do this" tool box.
wouldn't the easiest answer there be "print hotter and disable retractions"?
Not in that case - I actually tried a few variations of common anti-stringing techniques and none of them had an impact. The only one that had any visible effect was reducing nozzle temp to 185c ... which of course added a few other problems like poor layer adhesion and related perimeter print defects. And there was still some stringing.
Re: SD Card Benchy a Hot Mess (DIY Kit)
I recently printed a Groot in Wood that was pretty stringy, and the resulting webs were cool enough I left them. Being able to do it intentionally would be very cool, indeed. Hoping to hear back with the resolution to this particular issue for my "I need to do this" tool box.
wouldn't the easiest answer there be "print hotter and disable retractions"?
Not in that case - I actually tried a few variations of common anti-stringing techniques and none of them had an impact. The only one that had any visible effect was reducing nozzle temp to 185c ... which of course added a few other problems like poor layer adhesion and related perimeter print defects. And there was still some stringing.
Guess I'm just confused what you're trying to achieve. It sounded like you were trying to purposely make an object stringy, yet the reply above seems to suggest the opposite?
Re: SD Card Benchy a Hot Mess (DIY Kit)
All I am trying to say is it would be nice to have a recipe to create this spider web effect on prints, similar to the image.
That said, these spider webs were difficult to keep from happening. Changes to retraction did not help at all; and reducing temps enough to reduce them caused other issues. The filament used is just prone to stringing and not a lot can be done to help. Wood fill and all.
Re: SD Card Benchy a Hot Mess (DIY Kit)
All I am trying to say is it would be nice to have a recipe to create this spider web effect on prints, similar to the image.
That said, these spider webs were difficult to keep from happening. Changes to retraction did not help at all; and reducing temps enough to reduce them caused other issues. The filament used is just prone to stringing and not a lot can be done to help. Wood fill and all.
IMG_20190418_113326905.jpg
Yes, that's why I wasn't suggesting how to reduce stringing, I was suggesting how you could make it worse by not retracting and printing hotter so filament oozes more easily.
Re: SD Card Benchy a Hot Mess (DIY Kit)
All I am trying to say is it would be nice to have a recipe to create this spider web effect on prints, similar to the image.
That said, these spider webs were difficult to keep from happening. Changes to retraction did not help at all; and reducing temps enough to reduce them caused other issues. The filament used is just prone to stringing and not a lot can be done to help. Wood fill and all.
IMG_20190418_113326905.jpg
Yes, that's why I wasn't suggesting how to reduce stringing, I was suggesting how you could make it worse by not retracting and printing hotter so filament oozes more easily.
Haven't finished my morning coffee - I know better than to post things in this state 😕
Re: SD Card Benchy a Hot Mess (DIY Kit)
Since you mentioned playing with calibration squares first... why and what for? That is: what did you tweak?
Did you slice this or is it a direct sample gcode print?
ps: +1 on Vintage's suggestion below. Easy to adjust, too.
Hi! I printed calibration squares (flat, 1 layer) only to adjust the live Z height. As for the Benchy, I didn't do any slicing myself, it's the sample gcode from Prusa.
Re: SD Card Benchy a Hot Mess (DIY Kit)
IIRC the last time someone posted similar symptoms the cause was loose/improperly set setscrews on the bondtech gears; quite probable as it could cause the filament not to retract and ooze, making lots of strings. I'd start there.
Hi! I've double checked the Bondtech gear alignment / setscrew in the attached pic, no issues there 🙁
Re: SD Card Benchy a Hot Mess (DIY Kit)
Another thought is that your thermistor is a bit off: have you ran a PID calibration for the hot end? If not, might be a good idea. I doubt it's this, but it is easy to do and might correct a slow heater response that could be causing over temps while printing.