Hi all, I think this benchy came out ok except for the droopy parts in the pic, which is the third time happening to me, does anyone have a idea? 220C first layer then 210C with 100C bed .3 layer height .5 extrusion width 25mm print speed for everything (bridging is 45) 2mm retraction at 80mm a sec also I haven't used an enclosure, any ideas would be appreciated https://reprap.org/forum/read.php?262,789616,789616#msg-789616 Tue, 15 Sep 2026 14:05:30 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?262,789616,790201#msg-790201 https://reprap.org/forum/read.php?262,789616,790201#msg-790201 number40fan Printing Thu, 28 Sep 2017 21:32:54 -0400 https://reprap.org/forum/read.php?262,789616,790162#msg-790162 https://reprap.org/forum/read.php?262,789616,790162#msg-790162 JOEYG Printing Thu, 28 Sep 2017 15:35:23 -0400 https://reprap.org/forum/read.php?262,789616,790044#msg-790044 https://reprap.org/forum/read.php?262,789616,790044#msg-790044
Mccarman and Floyd, yes I agree that the extruder temp seems low, although its Hatchbox ABS and they claim anywhere from 210-240 temps so I guess technically I'm in range lol. I do think that the thermosistor could be reporting wrong as well since the Hatchbox PLA I was printing was also on the low end of the recommended settings as well.

Jcabrer, I think the print order could be an effective next step to document and test. I was reading an article that was saying one should print in reverse of how you like to print (external first) as the dimensional properties would come out more accurate IE on tolerance dependent parts. How ever when I was printing PLA at .32 layer heights and I kept the same print order (External first), and never had an issue with the drooping scenario I'm currently in.]]> JOEYG Printing Wed, 27 Sep 2017 15:58:24 -0400 https://reprap.org/forum/read.php?262,789616,790015#msg-790015 https://reprap.org/forum/read.php?262,789616,790015#msg-790015
Minimum Layer Time: This setting is in most slicers in some form, and limits print speed so that a single layer cannot print so fast that there is insufficient cool down time before the next layer prints.

Print Order: You can control what part of a layer prints first. Outer Perimeter, Inner Perimeters, Infill. Usually, I go with Inner Perimeters/Infill/Outer Perimeter, and I slow down the outer perimeter by 15% of normal print speed.

Flow Rate: The calibrated setting for flow rate, might be expressed as 100%, 100, or 1.0. In my experience, the ideal value is somewhere between 75% and 80% of calibrated. If this give bed adhesion problems, you can modify first layer flow rate and thickness separately from the rest of the print on most slicers.

Temperatures for ABS: Nozzle 230°C-240°C, Bed 110°C, Cooling Fan OFF

Benchy is a great tool for tuning in your printer for best results. If you have not done so already, there is a web site associated with the Benchy model, and you will find lots of resources there. The key to success is to change one value, test, observe, record, repeat. Give each printed model a letter, so you can keep track of what settings you used. Then go back and see what the best results have in common.]]> jcabrer Printing Wed, 27 Sep 2017 13:04:59 -0400 https://reprap.org/forum/read.php?262,789616,789885#msg-789885 https://reprap.org/forum/read.php?262,789616,789885#msg-789885 I cannot print one benchy out of ABS at a time because of cooling. Try printing 2 or more to improve the print.]]> Floyd Printing Tue, 26 Sep 2017 14:59:52 -0400 https://reprap.org/forum/read.php?262,789616,789829#msg-789829 https://reprap.org/forum/read.php?262,789616,789829#msg-789829 Assuming you have a 0.4 nozzle the extrusion width is about right for normal printing but could be an issue for bridging. I still run mine on auto so the software can adjust it.
Too higher an extrusion temperature? I would have thought 220 was an OK number but could be under reporting if the thermistor is loose.
Could try lowering the layer height and check the Z calibration. Not much sign of squidge on the layers. If you have a big layer height you have a lot more material suspended in the air.]]> MCcarman Printing Tue, 26 Sep 2017 07:39:03 -0400 https://reprap.org/forum/read.php?262,789616,789616#msg-789616 https://reprap.org/forum/read.php?262,789616,789616#msg-789616
220C first layer then 210C with 100C bed
.3 layer height
.5 extrusion width
25mm print speed for everything (bridging is 45)
2mm retraction at 80mm a sec

also I haven't used an enclosure, any ideas would be appreciated]]> JOEYG Printing Sun, 24 Sep 2017 21:08:11 -0400