If you wanted a more durable part, you can send the STL file out to a
service that prints it in stainless steel.  You might change the design to
reduce the bulk because they charge by the gram for the steel.

SpaceX is printing pre-burner parts for their new Raptor engines.  If
anything needs to be durable it is rocket engine parts.  I've read about
turbine engine blade retainers being printed in Inconel too.   It is not so
expensive if you think to reduce the weight of the parts.

On Fri, Mar 19, 2021 at 5:10 PM Gregg Eshelman via Emc-users <
emc-users@lists.sourceforge.net> wrote:

> 3D printing fixtures to hold things you've 3D printed can be done the same
> way. Put two cubes side by side with a bit of gap between. Position the
> object at the divide so that it's half embedded in each cube, with no
> undercuts. Subtract the object from both cubes. Print the cubes and you
> have blocks to clamp in a vise to hold the object for more operations like
> drilling, tapping, pressing in threaded inserts etc.
>
>
>     On Friday, March 19, 2021, 10:53:55 AM MDT, Chris Albertson <
> albertson.ch...@gmail.com> wrote:
>
>  When I first saw this, my idea was to print the internal tooth gear
> "backward" as a mold that makes up the central space in the aluminum
> housing, then pour in an epoxy/glass composite paste.
>
> I've seen this done on other projects, the most complex is a prosthetic
> hand I'm slowly working on.  The designer made the "finger bone" in 3D
> printed plastic, then you put it inside a hollow 3D printed mold and pour
> in polyurethane resin which "over-molds" the plastic core.  It makes a
> very tough non-slip fingerpad.    Seeing this got me thinking about what I
> call "hybrid design" what you combine 3D printing with metal and resin
> casting.  It sounds complex but if you have a 3D CAD system and a printer
> mold-making is nearly trivial, Use the part you want to make and subtract
> that from the inside of a brick.
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>


-- 

Chris Albertson
Redondo Beach, California

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