[PSUBS-MAILIST] Printed Kort Nozzle

[Alec Smyth]

Sure, that would be printed solid. The only thing is, at least with my
home-built printer, the result is decidedly not as stong as a solid plastic
that was molded or machined.

Best,

Alec


On Fri, Nov 8, 2013 at 7:30 AM, Joe Perkel <josephperkel at yahoo.com> wrote:

> Alec,
>
> What about a shape like that scooter Kort where the foil itself is a thin
> membrane supported by perpendicular vanes around the outside circumference,
> would a shape like that circumvent the void problem?
>
> Joe
>
>   *From:* Alec Smyth <alecsmyth at gmail.com>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Friday, November 8, 2013 6:24 AM
>
> *Subject:* Re: [PSUBS-MAILIST] Printed Kort Nozzle
>
>  Hi Alan,
>
> I like this idea! I have a printer I built myself so am a little familiar
> with them. One of the parameters you provide the printers on each job
> controls the "filling" of the piece. Normally, to save material that is a
> sort of cross-hatch, and the parameters control things like the direction
> and density of that cross-hatch. But the problem with that, for an
> underwater application, is that the resulting piece is full of air voids.
> I'd always assumed I would print something like this solid. However, if you
> print it hollow and fill it with structural fiberglass, the end result is
> going to be a lot stronger than if it's solid plastic. In addition, if we
> printed by parts but filled it up once those parts are assembled, the resin
> itself could be the "glue" that holds those parts together.
>
> Thanks,
>
> Alec
>
>
> On Thu, Nov 7, 2013 at 10:01 PM, Alan James <alanlindsayjames at yahoo.com>wrote:
>
>    Joe,
>   I was re thinking your idea of a printed Kort nozzle.
> There are printer kits for $900- that would do the job.
> http://www.3dstuffmaker.com/
> The ABS printer cable I've seen selling for about $1- an ounce.
> The $899- version in the above link could possibly be big enough to print
> the nozzle in one shot. If not then print it in sections & glue together.
> My idea is to print the nozzle hollow with an egg shell wall thickness &
> fill it with
> a fiber reinforced epoxy resin. The resin may need a few pours to allow
> for contractions
> in the resin while setting.
> Maybe under $30- in materials.
> I am not at the point where I need this & neither are you, but I think
> this idea still
> holds a lot of promise.
> Regards Alan
>
>
>
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