plastic chainguard renovation

[mickwinf]

My chainguard off Lazarus was a bit battered so sanded it down to a reasonable smoothness but has left the plastic quite dull even when polished with plastic dressing. I don't really want to paint it so has anyone got any tips?

[Cb750r]

There’s a few things you could try, the motocross guys often use a heat gun to "refresh" dull plastics. There’s lots of YouTube info on reviving car bumper trim that might help too.

I just had to do a repair on an ABS plastic ski box. I used acetone on a cotton rag to clean the substrate. It slightly melts the top layer and really made the plastic look new. Beware it does  melt/dissolve the ABS so not a soaking wet rag, and not an aggressive wipe down!

Your mileage will vary!

[Nurse Julie]

Use a hot air gun to heat it up and it will make the oils come to the surface. Keep the airgun moving along the length of the chain guard.

[Moorey]

 Have a look on ytube for vapour finishing abs or whatever plastic it is. Usually its on the mold mark.

[McCabe-Thiele (Ted)]

It's none invasive - I used a gell revivor.- looks okay Auto Glyn .

[Sesman]

Plus one on the heat gun method.

[mickwinf]

Will try the heat gun method, already tried autoglym Ted

[deltarider]

I don't know how bad yours is, but parts like these (tooltray, airfilterelementcase) can be restored to new by just cleaning it with peanut oil (arachide oil).

[Bryanj]

Last weeks Bangers and Cash restoration team showed getting the shine back on an argo with a heat gun

[McCabe-Thiele (Ted)]

Last weeks Bangers and Cash restoration team showed getting the shine back on an argo with a heat gun

Whats an argo?

[Rozabikes Tim]

6 wheel amphibious tub thingy. Only know that now because I watched it too. The one they did was bought by a group supporting Ukraine where it now lives!

[Laverda Dave]

Last weeks Bangers and Cash restoration team showed getting the shine back on an argo with a heat gun

I watched that👍. Does using a heat gun cause the plastic to go brittle in the long term?

[davidcumbria]

Motorex protect and shine.recommended by triumph for black plastic. Looks great but needs repeat application.

[Bryanj]

Dont know about brittle, but if the people who work on Argos all the time did it i would think it would be ok.
You have to be gentle with the heat and keep moving

[ST1100]

Motorex protect and shine.recommended by triumph for black plastic. Looks great but needs repeat application.

Bike Spirits Spray Cleaner & Polish...

https://www.amazon.com/Original-Spirits-Cleaner-Polish-Aerosol/dp/B007KPX7HQ?th=1

Wash, dry and de-grease part, apply, let soak over night, wipe any excess off with lint free (cotton) fabric in the morning...
(lasts about a year on dark gray and black plastics before it washes off/faints due exposure... but re-application works effectively after the first over night treatment)