GC8

I have a very large piece of polycarbonate that I want to polish. Its not scratched as such, but its covered in very fine swirl marks. Its a lightweight 944 hatch, similar to the one in the picture below:



Ive a reasonable idea about how to polish small acrylic parts, but this is hundreds of times bigger than any Omega helaslite crystal that Ive attempted.

Any knowledgeable suggestions welcomed.


Simon

GC8

Currently, mine doesnt have the reinforcing braces fitted, so Im able to do it all in one go. The downside of that is that it wobbles like Rolf Harris's tea tray...

LanCat

I've had some success with
Meguiars PlastX - Clear Plastic Cleaner and Polish

GC8

Cool: what did you do, what was it like to start with and how did it finish up?

GC8

Will one 300ml bottle do the whole hatch?

nixxon

Yup, PlastX is what you want. Superb stuff! Rub it down with 1000/2000 grade wet and dry (you will now want to cry, but trust me), and then apply the plastX according to instructions. It took me 10 mins to do an Outback headlight by hand, so if you have a buffer or such-like, that hatch shouldn't take more than a couple of hours. Depending on how well you sand out the scratches, it will become PERFECTLY clear!

yoza

I have done many a moon watch, but nothing as big as your rear screen.

It is very un-nerving rubbing plastic/polycarb/acrillic down with abrasive paste and seeing the dull, grey, milky result....

But when you apply the abrasive free bar and buffer its amazing, and a relief....

Watch you dont over buff, as this will result in too much heat and the material will burn/melt.....not good.

As we all know the moon watch was not able to have a glass face for safety reasons, and it was manual wind also, as a auto rotor would not function in a gravity free environment.......yawn, yawn......Im sorry.

Later Yoza

LanCat

Yep, one bottle should be enough.

I'd wash the hatch very thoroughly, maybe twice to make sure there's no grit on it and then work small areas - say a foot square - just follow the instructions on the bottle. Use new clean cloths, get some cheap microfibre ones from the supermarket. A buffer would help if the scratches are deep but if they are just light then you should be ok by hand. Always a risk that the buffer might overheat the plastic so if you go that route be very careful.

GC8

Appreciated

Merv

iTrader: (12)

I use a Porter Cable,medium cut pad and medium cut Menzerna.It will take about 20 minutes to do a screen that size.

Leslie

Brasso used to work pretty well too.

Les

GC8

For Lancaster Lexan gun turrets?