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CPE+/PVA -> awful warp


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Posted · CPE+/PVA -> awful warp

Something horrible happened. I made a large Ultimaker CPE+ print, and it came out of the printer beautifully (build plate: 110°C, UMS5 with plexiglass cover to retain heat). Then I put the model into warm water (45°C, thermostat + pump) to dissolve the PVA. And now the model warped horribly! It seems that the surface that was against the build plate has contracted and is now all bent. However, the upper surface (opposite to the build plate) is still in shape. What could have happened? How can I prevent that? Any help would be very gratefully accepted!

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    Posted · CPE+/PVA -> awful warp

    CPE is a little more heat-resistant than PLA (up to 70°C), CPE+ is said up to 100°C (I've not used CPE+ so far, only CPE), but with water temparature up to "hand warm" (starting temp, no heated bath) i never had problems with after-print warping.

     

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    Posted · CPE+/PVA -> awful warp

    Also, I am not sure if it has anything to do with the water. I submerged it immediately together with the glass plate. Maybe it is just the temperature shock.

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    Posted · CPE+/PVA -> awful warp
    On 4/20/2019 at 11:50 AM, aag said:

    Also, I am not sure if it has anything to do with the water. I submerged it immediately together with the glass plate. Maybe it is just the temperature shock.

    I would go with this. I would let the print and plate thoroughly cool before submerging in water.

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