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Rod Speed Rod Speed is offline
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Default Repairing and strenthening thin moulded plastic



"David" wrote in message
...
On Thu, 20 May 2021 12:12:55 +0100, newshound wrote:

On 20/05/2021 12:04, David wrote:
I posted on this some time back, perhaps nearly a year, but can't seem
to find the original at the moment.

I have some moulded plastic fitting in my caravan which have proved
flimsy.
I need to both repair and strengthen them.
As a first check, should a fibreglass repair kit - that is, two part
epoxy resin and some fibreglass matting - be suitable for this kind of
repair?

I am about to investigate in more detail once I've emptied out the
caravan so I can get to the area in question.

Cheers



Dave R


What type of plastic? It's difficult to glue things to polyethylene and
polypropylene (for example), even though "sticky tape" of various sorts
will stick well.

Such a lot also depends on the loadings and requirements.

Traditional fibreglass kits use polyester resin rather than epoxy. It's
cheaper, more brittle, and does not stick quite so well to many things.
Epoxy plus fibre glass is good, provided it has the basic adhesion.
"Mechanical keying" is also a big help.


I'm not sure how to tell what kind of plastic it is.


https://www.google.com/search?q=how+...+plastic+it+is

It is hard rather than soft+flexible.