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SOHC.co.uk Forums => Other Bikes => Topic started by: Laverda Dave on January 15, 2018, 10:31:52 PM

Title: Renovating black plastic parts
Post by: Laverda Dave on January 15, 2018, 10:31:52 PM

Does anyone have any tips of suitable products to renovate black plastic parts such as rear inner mudguards, air box casings etc? I've used Halfords Back to Black in the past but the finish wears off very quickly. I don't want to paint the parts as it tends to flake and crack and looks awful.

Title: Re: Renovating black plastic parts
Post by: Orcade-Ian on January 15, 2018, 10:48:24 PM

I use AutoGlym bumper care for plastic parts on the bikes and cars.  It’s a green coloured gel which just spreads on and wipes off.  It won’t remove scratches and scuffs but makes them less noticeable.
It works well on any coloured plastic bits too, like the fading handlebar switchgear on BM’s
It takes quite a few months before needing doing again.

Ian

Title: Re: Renovating black plastic parts
Post by: SteveD CB500K0 on January 16, 2018, 10:51:02 AM

I use AutoGlym too.

It even works on my old faded Givi topbox!

Title: Re: Renovating black plastic parts
Post by: Green1 on January 16, 2018, 11:55:48 AM

I have used Owatrol Polytrol on black plastics that have gone a bit grey and swirly looking overtime.
I also used it on the red faded paintwork on my truck, Faded GRP wood affect doors and it even brightened the dull chrome and frame paint a little on my 750. Also did my faded Givi luggage on my Aprillia.

Title: Re: Renovating black plastic parts
Post by: Sgt.Pinback on January 16, 2018, 04:23:14 PM

I use olive oil.

Before and after 4 drops

Title: Re: Renovating black plastic parts
Post by: 70sHonda on January 16, 2018, 04:30:16 PM

Autoglym for me too. Recently did mine; it’s not a great picture especially as it’s damp out there and it needs another polish, but hopefully it gives you an idea.

Title: Re: Renovating black plastic parts
Post by: alfiembra on January 16, 2018, 05:27:51 PM

Smooth peanut butter apparently does the trick. The oil in it probably similar to the olive oil post above.

Title: Re: Renovating black plastic parts
Post by: Laverda Dave on January 16, 2018, 05:52:02 PM

Thanks for the tips from the green and organic to the technical and modern. I'll give both a try and report back with some photos.

Title: Re: Renovating black plastic parts
Post by: kettle738 on January 21, 2018, 01:43:13 PM

Years ago I read about a method for renovating faded black plastic (might have been in the VJMC mag) which involved heating it with a hot air gun until the surface colour just starts to visibly alter......and before it starts to melt.

I remember trying it on an old greyed out Givi top box and it worked.....however, the margin between renovate and ruin was quite small so it paid to try it out on something worthless......and it occurred to me at the time that it was much better suited to small items as the likelihood of getting a uniform finish over a large surface area seemed small....always keep the heat gun moving.

That said......grey became black again and stayed black.

Here is a bloke refurbing a greyed out plastic bumper on youtube.......

https://www.youtube.com/watch?v=R9tDq1oRy9U

Mick.