[PSUBS-MAILIST] Depth rating for 3D prints

[Rick Patton via Personal_Submersibles]

Some really nice work and good documentation, Thanks

Rick

On Mon, Jun 13, 2016 at 3:01 PM, Alec Smyth via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi all,
>
> I'm going to test using 3D printed Kort nozzles on Shackleton, and I have
> an interesting unknown. It would be nice to print them solid, but it would
> just take too long and probably create shrinkage issues. So the question
> is, what fill percent suffices (in 3D printing you get to specify the
> percentage of material fill, the rest being air). I called Greg Cottrell
> and he didn't have any data on prints, but he did have some on the depth
> rating of different types of buoyancy foam.I did a napkin calculation and
> it would appear that, at least if the print behaves like foam of similar
> density, I'm fine. But does anyone have any data on this? Or does anyone
> have a small pressure test chamber for which we might print some test
> samples? I would need to test to about 500 psi.
>
> BTW I've updated Shackleton's project page:
> http://www.psubs.org/projects/1234567810/shackleton/
>
>
>
> Thanks,
>
> Alec
>
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