I have been experimenting with plastic welding for the first time during
the past week.  Being a serious cheapskate I got the HF tool that is like a
soldering iron.  I was fixing cracks in the AC evaporator housing on an '87
Wolfsburg and the covers that go below it on the D pillars.  My first welds
were not very strong; not enough penetration.  After inventing a different
tip things went better and I learned as I went along.
  The set included some oddly shaped "rods" but no info about what type of
plastic they might be.  One of my big questions is about how to identify
the type of plastic you are working on.  I understand that it is important
to use the same type of filler rod if needed.

Larry A.

On Sat, Dec 21, 2013 at 10:56 AM, Robert Stevens <mtbiker62@gmail.com>wrote:

> On Dec 21, 2013, at 8:32 AM, Karl Mullendore <tdiguru@WESTYVENTURES.COM>
> wrote:
>
> One video here: http://www.youtube.com/watch?v=jtig_iWahD8
> Note that a plastic welder has no flame - it is an electrically heated air
> nozzle, basically.
>
> I got the Bus Depot gray water holding tank, that is to be mounted under
> the kitchen drain
> under the van. My van has A/C so there are 2 hoses/liines running through
> the area under
> the van where the gray water tank mounts. I used a dremel to cut a section
> out of the tank,
> turn it over and plastic weld it back onto the tank. Worked beautifully
> and is very easy to
> use. It's also easy to apply more plastic material, kind of like using
> welding rod.
> End result is that the weld created a perfect seal that does not leak.
>
> Bob