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Hi,

I just got my Wanhao Duplicator 4S and decided to print the “Marvin” 3D model. I have noticed in the prints that the overhangs kind of bend upwards so that the nozzle pushes against them. Thus the overhangs are somewhat deformed. Also there are some small dark marks, burning I suppose. You can find pictures here: http://1drv.ms/1P3tokp

I am printing in ABS, nozzle temperature was 230°C, bed 110°C, layer height 0.15mm and as slicer I used Simplify3D. Does anyone maybe have some tips on how to prevent the described problems?

Thanks in advance

Dorian

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I’m a nube. What was minimal print time per layer? Did each layer get a chance to cool before more warping abs was dropped on it?

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I used the standard profile from simplify3D, so “Adjust printing speed for layers below” was set to 15 seconds and “allow speed reductions down to” was set to 20%, if that is what you meant. So you think that letting the filament cool down after extruding would help? I thought that it was mainly needed for PLA. Could a fan duct improve my results?

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At 15 seconds… Thats plenty. Ignore my statements. Someone else is needed

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Layers are not cool before the next layer is printed. The solution is cooling with fans, slowing the print, lowering extrusion temp or some combination of the three. Another popular option(this is a popular problem) is printing several marvins at once but that is more of a work around than a solution.
Good luck.
-Jesse

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Wow… Maybe I wont be so timid with my thoughts next time!

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There is print quality guide that should give some pointers, it been put together by Simplify 3D

https://www.simplify3d.com/support/print-quality-troubleshooting/#

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Thanks that looks helpful.

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Thanks, I am going to try to print a fan duct.

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I have original series Wanhao Duplicator 4. I don’t print ABS much at all but lots of PLA, I also use Simplify3D to power it.

Duplicator 4 almost all -need- additional cooling directed to the print. If you dont already have a fan duct on your D4, head over to thingiverse and print one up, then use it to print the same one again to get a smoother finish for better air flow on the duct.

Next looks like your part is sagging down for the first 1/2 ish of the print and if you notice has kind of shrunk a bit too. I don’t know how true this is with ABS (like I said I nearly never use it.) but with PLA this usually a sign the heatbed is too hot. Which causes the bottom layers to shrink more and stay softer longer as they are closer to the constant heat of the bed. Drop it down by 5-15C and do some tests again. I think you can still safely print ABS with your heatbed as low as 90C or so, but you should look more into that fact.