I don't, the kit I have came with HDPE. I'm not sure I'd trust HF rods for 
anything other than HDPE...
-Curt

    On Friday, December 28, 2018, 4:31:52 PM EST, Andrew Strasfogel 
<astrasfo...@gmail.com> wrote:  
 
 Thanks for the tip.  Do you know if plastic welding kits include polypropylene 
rods?

On Fri, Dec 28, 2018 at 4:26 PM Curt Raymond <curtlud...@yahoo.com> wrote:

 HF says the cheap soldering iron type gets to 525F. They say the more 
expensive air one goes to 
850F.https://www.harborfreight.com/welding/plastic-welders.html
I've got the iron one, worked a treat on a snowmobile gas tank. Never could get 
it to weld the '98 Jetta's bumper mounts. That stuff was weird, it'd melt but 
wouldn't stick to itself...

-Curt

    On Friday, December 28, 2018, 4:22:10 PM EST, Andrew Strasfogel 
<astrasfo...@gmail.com> wrote:  
 
 Thanks! Surprised that it requires a temp.of 572 F!  I wonder if the cheap HF 
plastic welders get that hot?

On Fri, Dec 28, 2018 at 4:19 PM Curt Raymond <curtlud...@yahoo.com> wrote:

 I've only done HDPE (polyethelene) but 
http://www.kingplastic.com/tips-for-welding-thermoplastics/ suggests 
polypropylene is easy.

-Curt

    On Friday, December 28, 2018, 3:48:50 PM EST, Andrew Strasfogel via 
Mercedes <mercedes@okiebenz.com> wrote:  
 
 Someone abandoned a rather attractive urn-shaped rain barrel which has a
crack in the bottom of the base and won't hold water.

https://www.homedepot.com/p/Koolatron-55-Gal-Rain-Barrel-RBSS-55/100670191

The rain barrel is quite well designed, with a convenient threaded drain at
the very bottom that can be attached to a hose, so I would like to use it
if possible.

The barrel is made of  polypropylene  I did a little research and came up
with a Youtube video of a guy repairing a plastic bucket using Rustoleum
Leak Seal with some strips of landscaping cloth.  Unfortunately, the
Koolatron customer service rep was discouraging.  The material they use is
the same as paint can liner, so nothing adheres to it!    All rain barrels
returned to Koolatron with cracks under warranty are replaced rather than
refurbished.

She suggested a plastic welder with a rod of polypropylene might do the
trick.  Anyone had any success withusing a plastic welder on polypropylene?

Andrew
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