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Top layers of print giving partial filling


Floyd29
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Posted · Top layers of print giving partial filling

Hi,

 

We are trying to print an object on Ultimaker 3+ using Ultimaker TPU 95 Shore A.

We have experienced the same problem on several objects now.

 

The base layer & wall are all printing fine but as we approach top layer the print shows partial fill.

The setting were as follows-

 

Print layer thickness =0.1 mm (Fine)

Nozzle size =0.4 AA

Cooling, fan speed =Max 70 %

Build plate temperature = 60 C

Printing temperature = 135 C

Print speed = 25 mm / sec

 

Please suggest best way to rectify this problem.

 

Thanks

 

 

1BFAF9DE-B23E-4416-8528-2FC759099612.JPG

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    Posted · Top layers of print giving partial filling

    I haven't used TPU yet, but I vaguely remember others saying that soft plastics are hard to print, because they tend to get compressed and stuck in the bowden tube. Some say you need to print it *very* slow (to not compress it), and some oil the filament (to reduce friction). But I don't know the details, so try searching on the forum.

     

    Also, a nozzle temp of 135°C seems very low? Could that be a typo, and should have been 235°C? If you would really print at 135°C, that of course would cause underextrusion.

     

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