PDMS layer formation over 3D printed mold

A general purpose resin tuned for 20 - 200 micron slice thickness
arn11
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PDMS layer formation over 3D printed mold

Post#1 » Tue Mar 21, 2017 11:21 am

Hi,

I am using the 3D printed mold as a substrate in order to create a 100 micron PDMS layer. I use a release spray on the surface of the mold before applying the PDMS. However, I am finding difficulties in peeling the layer off. Is it even possible to obtain such a thin PDMS layer from the mold? If so, how is it possible to get the layer to be peeled off smoothly?

What is the photopolymer black resin composed of? details like the functional groups or the chemical constituents would be extremely helpful.

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Robert Howle
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Re: PDMS layer formation over 3D printed mold

Post#2 » Tue Mar 21, 2017 7:39 pm

All photopolymer resins have proprietary formulations. Good luck.

Robert
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arn11
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Re: PDMS layer formation over 3D printed mold

Post#3 » Wed Mar 22, 2017 2:19 pm

Thank you!
Do you have any thoughts on the peeling of a pdms layer?

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mikej
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Re: PDMS layer formation over 3D printed mold

Post#4 » Wed Mar 22, 2017 2:27 pm

That thin, it will be very delicate and easy to break. Curing at elevated temperatures (150 F) for an hour or so might help make it a bit stronger.
Measure Twice, Cut Once.

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