RE: [rp-ml] plastic welding FDM parts

these tequiks had been studied about 15 years ago in Japan.
You had better check old artiles.

best regards

imamura

"Bob Olsen" <Bob@protogenic.com>@rapid.lpt.fi 2009/11/20 05:03:22

$BAw?.<T!'(B owner-rp-ml@rapid.lpt.fi

$B08@h(B $B!'(B "Anderson, Theodore E. (MSFC-EM40)[Raytheon - Jacobs]"
       <theodore.e.anderson@nasa.gov>, <rp-ml@rapid.lpt.fi>
cc $B!'(B
$B7oL>(B $B!'(B RE: [rp-ml] plastic welding FDM parts

Thanks Ted!

We do nylon laser sintering, and are thinking of adding FDM, so was
interested.

We have done heat staking with the nylon, and I presume FDM same. I wonder
about ultrasonics mentioned below, because the part density and composition
of the sintered nylon and FDM process different than injection molded or
cast nylon or ABS.

Appreciate the plastic welding info though, Cheers, bob

From: owner-rp-ml@rapid.lpt.fi [mailto:owner-rp-ml@rapid.lpt.fi] On Behalf
Of Anderson, Theodore E. (MSFC-EM40)[Raytheon - Jacobs]
Sent: Thursday, November 19, 2009 10:26 AM
To: Bob Olsen; rp-ml@rapid.lpt.fi
Subject: RE: [rp-ml] plastic welding FDM parts

Hey Bob,

I got plenty of responses but most involved using some type of chemical to
create a bond. I have done actual plastic welding sometime ago where you
use a heat gun with plastic filaments and it worked really well. I thought
this might be nice to fix FDM parts that have some void that wasn$B!G(Bt
supposed to be there or to weld components together. I contacted Stratasys
and their Red Eye division does this quite often. The tools they use are
the Leister Hot-Jet S with weld kit 107.148. I priced them out and the
cost will be around $900USD.

Here are some responses I received:
Are you asking about ultrasonic or solvent welding? Here's a link to a site
talking about using MEK for solvent welding:
http://www.kabu-nagasaka.co.jp/en/processing/fdm_molding.php

As for ultrasonic welding it would depend on the material. As I remember it
more flexible materials such as polyethylene or polypropylene don't work
well
with that, but more rigid thermoplastics do since the ultrasonic vibration
has some resistance to make it work.ABS is among the best plastics to weld
ultrasonically.

Ted Quick

Hello Ted,

I haven't done plastic welding using heat for FDM parts but I have done a
lot of solvent bonding and find it works very well. I use Weld-on #3
Cement from McMaster, part number 7528A13. It's pretty nasty stuff but
works well. The other solvent I've used is PVC pipe cleaner (joint
prep)....easy to get and works but very harsh on FDM so more caution is
needed.

Hope this helps!

Kind regards,
Andres

Ted Anderson
Rapid Prototyping Lab
Raytheon
Jacobs MSFC ESTS Contract

From: Bob Olsen [mailto:Bob@protogenic.com]
Sent: Thursday, November 19, 2009 8:59 AM
To: Anderson, Theodore E. (MSFC-EM40)[Raytheon - Jacobs];
rp-ml@rapid.lpt.fi
Subject: RE: [rp-ml] plastic welding FDM parts

Ted, any response on this, we'd be interested in knowing as well, thanks!
Regards, Bob - Protogenic

From: owner-rp-ml@rapid.lpt.fi [mailto:owner-rp-ml@rapid.lpt.fi] On Behalf
Of Anderson, Theodore E. (MSFC-EM40)[Raytheon - Jacobs]
Sent: Tuesday, November 17, 2009 7:58 AM
To: rp-ml@rapid.lpt.fi
Subject: [rp-ml] plastic welding FDM parts
Does anyone have experience plastic welding FDM parts? What plastic welder
do you use? And does it work well? It$B!G(Bs been about 14 years since I$B!G(Bve
done any plastic welding, so if you wouldn$B!G(Bt mind sending a procedure on
how you prep the FDM part, that would also be appreciated.

Ted Anderson
Rapid Prototyping Lab
Raytheon
Jacobs MSFC ESTS Contract

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Received on Tue Nov 24 02:38:34 2009