On Mon, 11 Apr 2016 12:07:15 -0700, wrote:

On Mon, 11 Apr 2016 11:48:37 -0700, Jeff Liebermann
wrote:

On Mon, 11 Apr 2016 09:51:46 -0700, wrote:

I don't know what kind of plastic your part is but there is a two part
plastic cement that bonds well to many of the plastics that are hard
to glue. I don't remember the name but I think it is made by Loctite

http://www.loctiteproducts.com/p/sg_plstc/overview/Loctite-Plastics-Bonding-System.htm

Cyanoacrylate resin and MEK as "activator". Works quickly and great
for most plastics. However, the MEK tends to dry out prematurely in
the bottle. Have some extra MEK handy if you're going to use it.
Also, make sure everything is free of grease or it won't stick.

Greetings Jeff,
The stuff I'm talking about is not a cyanoacrylate resin and activator
system. It is two parts that must be mixed and then applied. This is
the stuff. I think. See the link:
http://www.homedepot.com/p/Loctite-0...0788/100371824
Eric

Do you recall if the goo you used took 5 min or 20 min to set?

The Home Despot ad above shows "Epoxy Plastic" with a 5 minute time to
set. However, I couldn't find that on the Loctite web pile, but found
this instead:
http://www.loctiteproducts.com/p/epxy_plstc_s/overview/Loctite-Epoxy-Plastic-Bonder.htm
which is a "Plastic Epoxy Bonder" with a 20 minute time to set. I
prefer the longer setting times and overnight hardening, so I'll start
with the 20 min flavor.

The Plastic Epoxy Bonder stuff is NOT an epoxy. Epoxy is a
thermosetting plastic. The Plastic Epoxy Bonder is an acrylic, which
is thermoplastic. See first question at:
http://juxtamorph.com/difference-between-polyester-acrylic-and-epoxy-resins/
That's fine because an acrylic based glue is what you want for ABS
anyway.

I suspect it also has some sort of solvent to soften the base plastic.
Looks like the formulation has changed slightly:
http://henkelconsumerinfo.com/products/henkel.datasheets.DownPdf.pdf?BUSAREA=0006&VKORG=3 450&MATNR=1442491&RECNDH=20257403&ACTNDH=0&LANG=EN &COUNTRY=US
http://www.menards.com/msds/107040_001.pdf (older)
Yep, 1% carbon tetrachloride solvent, which should do nicely for
softening plastics. Three different forms of methyl methacrylate
(MMA). Incidentally, MMA was once used for fake finger nails, but was
banned for some reason:
http://www.hooked-on-nails.com/mmaandyou.html
I'm not sure what the other stuff does and am too lazy to dig it out.

So, what you have here is an acrylic plastic glue, with some rubber
compound added to make it a little flexible, no epoxy resin anywhere
in sight, and a bit of solvent to soften the base plastic.
Also see the data sheet at:
http://www.loctiteproducts.com/tds/EPXY_PLSTC_S_tds.pdf

The 5 min "Epoxy Plastic" MSDS is rather cryptic:
http://henkelconsumerinfo.com/products/henkel.datasheets.DownPdf.pdf?BUSAREA=0006&VKORG=3 450&MATNR=1071291&RECNDH=20924077&ACTNDH=0&LANG=EN &COUNTRY=US
http://henkelconsumerinfo.com/products/henkel.datasheets.DownPdf.pdf?BUSAREA=0006&VKORG=3 450&MATNR=1071250&RECNDH=21213716&ACTNDH=0&LANG=EN &COUNTRY=US
and only shows "epoxy resin, proprietary". The hardener is listed as
"tertiary amine" which is an epoxy resin curing agent.

I would go for the 20 minute flavor.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558