From: Sebastien Bailard (penguin@supermeta.com)
Date: Thu Jan 11 2007 - 06:18:48 EET
On Wednesday 10 January 2007 19:57, you wrote:
> Sebastien Bailard wrote:
> > I'd enjoy hearing what people think of it; I just sent a longish email
> > analyzing it to a friend and another mailing list, but I'm a little
> > worried I'm too close to matters to really be objective about it.
>
> The thing that concerns me most about both this - and all of the RepRap
> prototypes we've seen so far is that they can't deal with substantial
> overhangs. There is always talk of having some kind of support material
> but it's not entirely clear to me that any of those proposed will
> actually work all that well.
>
> Certainly the Fab@Home thing doesn't seem to have the ability to build
> with overhangs - and for me, that makes it little more than an
> interesting toy. RepRap has a way to go yet - but I sure hope this
> area gets some more attention.
This is true, and it's a substantial concern. We might end up using either a
water soluble wax like polyethylene-glycol
http://reprap.blogspot.com/2006/10/polyethylene-glycol-as-potential-water.html
or maybe just polycaprolactone with a very high filling fraction of inert
powder in it.
This is speculation.
Regards,
-Sebastien
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