>up with joining plastic parts with
cyano-acrylate (super-glue) and then
>running a soldering iron along the joint.
On Tue, 21 Sep 2010, John Foust wrote:
What does that do? Heat helps it?
Welding the joint at the surface.
Even that shallow weld substantially reduces the stress on the joint.
Now that trick I'd not come across. Mind you, I find isocyano acrylic
hydro-copolymerising adhesives to be anything but 'super' :-)
A trick which I do not claim any kind of originality for works on
plastics that you can find a solvent for (dichloromethane works on quite
a few plastics, it's sold as 'plastic weld').
What you do is put the bits together and run a brush dipped in the
solvent along the cracks. That much is stnadard. Then take a piece of
cotton fabric (an old shirt or similar) and cut a pieve to fit over the
back of the broekn area. Put it in place and paint it with the solvent.
Then force it into the softened plastic forming a sort of composite
matrieal. It makes the repair a lot stronger.
-tony