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Dealing with steep curves and warping  

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joe.r9
(@joe-r9)
Active Member
Dealing with steep curves and warping

I'm working on printing pieces for a dactyl keyboard case. The parts in particular have some pretty steep curves which is resulting in some warping and not super clean prints. I've particularly had issues with the printed pieces (where the curves are) bending up slightly which doesn't deform the print really but the P.I.N.D.A. probe and nozzle and constantly crashing into it at various places and bending it up or down and causing some melting/burning of the plastic on the printed pieces. I was able to get one print done with only a single crash, which resulted in some slight layer shifting. I purchased the silicone sock to try and help with some of this, which is did, but the second attempt had 5 before I stopped it and took some large chunks out of the silicone as it brushed against the part. I'm working with PETG but open to other material types and any advice on getting better quality prints. The pictures below are the first reasonably successful print.

To be clear, the warping isn't off the build platform. I'm getting great bed adhesion and it is staying completely flat. The warping, or at least what I assume is warping, is on the new layers as it prints where it begins to curve up and there is very little surface area.

Posted : 15/06/2018 7:09 am
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: Dealing with steep curves and warping

Hi Joe,
have you considered printing this upside down, with supports enabled?

maybe using chunky meshmixer tree supports with small contact areas.?

hopefully that would give to more constraint on the model shape as the model evolves, and reduce your problems,

Regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 15/06/2018 1:07 pm
joe.r9
(@joe-r9)
Active Member
Topic starter answered:
Re: Dealing with steep curves and warping

After this result that's one of the first things I attempted because the goal is to have a nice finish on the bottom and not the top. I rotated model to get it so that the corner were on the print bed but this ended up with adhesion issues, I assume, due to the limited surface area touching the build platform. All but one of the corners had issues.

Posted : 15/06/2018 5:40 pm
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