Topic: Brittle old plastic (Read 2230 times)

Skimmer Fan · « **on:** April 05, 2018, 05:39:12 pm »

Has anybody got any advice on the best way to repair cracks in old plastic boat moldings.

richardabeattie · « **Reply #1 on:** April 05, 2018, 05:50:14 pm »

What sort of plastic - or do you mean glassfibre?

Skimmer Fan · « **Reply #2 on:** April 05, 2018, 05:54:38 pm »

Its just like blown plastic molds not glass fibre
The boat is about 30 years old

Plastic - RIP · « **Reply #3 on:** April 05, 2018, 05:58:00 pm »

If it's polystyrene, I use liquid poly and very thin plasticard to make sticky plasters on the inside over the split. It will split again elsewhere if it's gone really brittle.

Colin Bishop · « **Reply #4 on:** April 05, 2018, 06:28:19 pm »

Often it is internal chemical disintegration so no practical long term remedy.

Colin

ballastanksian · « **Reply #5 on:** April 05, 2018, 08:58:02 pm »

I agree. It may be on its way out but as long as no pressure is put on it, Plastic's technique is sound.

Old white styrene that has effectively perished is of no use and I chuck it away rather than risk poor work by using it. The savings are not worth the hassle of rebuilding masters that have ruptured

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Author Topic: Brittle old plastic (Read 2230 times)

Skimmer Fan

Brittle old plastic

richardabeattie

Re: Brittle old plastic

Skimmer Fan

Re: Brittle old plastic

Plastic - RIP

Re: Brittle old plastic

Colin Bishop

Re: Brittle old plastic

ballastanksian

Re: Brittle old plastic