I think you want it as hard as you can that still last a decent amount of
time..   Too rubbery and there will be more toque flex...

On Fri, Mar 19, 2021, 11:58 AM John Dammeyer <[email protected]> wrote:

>
> There are some other printable filaments that are far more flexible.  More
> like rubber.  Would perhaps that material work better?
>
> John
>
> > -----Original Message-----
> > From: Sam Sokolik [mailto:[email protected]]
> > Sent: March-19-21 8:03 AM
> > To: Enhanced Machine Controller (EMC)
> > Subject: Re: [Emc-users] Maybe a minimally printed harmonic drive?
> >
> > So - this didn't make it 6 hours with the steppers running 833rpm
> > (3000deg/min at the face plate)  (forward reverse some positioning...)
> >
> > http://electronicsam.com/images/greenmachine/IMG_20210317_073558.jpg
> >
> > Now - I am sure it would last longer if it was run slower...  The flex
> gear
> > now has the consistency of chocolate..  It just crumbles.
> >
> > So - I printed the flex gear out of petg.   As of this morning it has run
> > for 12 hours and still positions correctly.  I would say - if it last a
> > good 24 hours - it will be perfect for a hobby 4th axis.  It isn't going
> to
> > be run like this in normal situations and you can always print more
> gears...
> >
> > sam
> >
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>
>
>
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