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Cleaning cockpit canopy - advice please

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Herri17/02/2015 10:21:28
491 forum posts
695 photos

I am currently building a 1/4 scale Rally Morane. The cockpit canopy is quite big and needs a good clean. The outside has a layer of plastic which will be removed but the inside has suffered a bit of scratching and scuffing.

What can I use to clean it up?



Cuban817/02/2015 10:33:56
2727 forum posts
13 photos

Although I haven't used it myself, many caravan owners polish out scratches on acrylic windows with Brasso. Might be worth experimenting on a scrap section of canopy to make sure you don't make matters worse,  but if the scuffs are too deep it might me irrecoverable.

Edited By Cuban8 on 17/02/2015 10:37:50

J V R17/02/2015 10:37:09
323 forum posts
62 photos


Chrome polish works well on Perspex, that might be worth a try along the edge or a corner before you commit to a large visible section in the middle....

Engine Doctor17/02/2015 10:38:54
2302 forum posts
27 photos

Hi I have had a similar problem in the past. I used a fine scratch remover as used on car paint . Faracela finishing compound is good and give a super finish . There is also a very good paint restorer currently being sold in the pound shops . T cut will also work but doesn't seem as good as it used to be . Use a soft cloth and allow it to smooth down making a very smooth polishing pad .Use back and forth strokes until the polish is producing a glassy finish then small circular strokes to finish off. Any deep scratches will need a coarser paste to remove/reduce them before using the fine paste. When your happy wash the canopy in luke warm soapy water to remove the any chemicals as they may de-naturise the plastic and turn it brittle .

There is also a floor cleaner that was available some years ago that leaves a plastic film that fills and hides the scratches. I know the name changed but cant for the life of me remember what its called.There have also been threads on this forum that you may be able to find. Perhaps someone on here will remember the product ?

Stevo17/02/2015 10:42:46
2699 forum posts
419 photos

you mean this...

I've used it myself. Also toothpaste works well as a polish on canopies!!

McG 696917/02/2015 12:23:43
2547 forum posts
977 photos

Hi Herri,

We used to regularly need some Lexan/Perspex polishers for 1:1 scale planes.

The best method around to recover the original smoothness was by using Novus Plastic Polish for all acrylics you can imagine. These products are even listed in the maintenance manuals of for ex. Boeing & Cessna.

Novus comes in three different grades. Item #1 is for cleaning, #2 is medium coarse for small scratches while #3 is a rubbing compound for 'heavy' repairs. You start w/ the highest number & always ends w/ #1 cleaner. Also never use any paper towels as they contain cellulose (wood particles) that will scratch your acrylic again... Only use soft cotton or microfiber & use a new piece of cotton for each different grade you're working with.

If you can't get it locally, you can find some 'Starters Kits' w/ 1 small bottle of each grade on eBay. I used to distribute them, some time ago, for Western Europe & the Starter Kit was retail-priced at +/- € 14 (including some cellulose-free cleaning pads). I may have some left if you have trouble finding them.

Happy polishing


Brussels, Belgium

Sean Tracey17/02/2015 13:31:33
40 forum posts

Believe it or not Toothpaste works very as well, and it is very gentle on canopys.

Engine Doctor17/02/2015 13:44:33
2302 forum posts
27 photos
Posted by Stevo on 17/02/2015 10:42:46:

you mean this...

I've used it myself. Also toothpaste works well as a polish on canopies!!

Well done Steve I knew someone would remember it.

Area 5117/02/2015 15:11:47
653 forum posts
1 photos

Afternoon, does anyone know of the current stockist of KLEAR? I was looking for some a couple of years back and was unsuccessful.. a suggestion I found on the WWW was that it was no longer available at that time! crying

Thanks in advance

TinPot Pilot17/02/2015 15:38:24
155 forum posts

I THINK this is the reincarnation of the old Klear.


David P Williams17/02/2015 16:01:48
841 forum posts
282 photos

On a related matter, what's the best way to de-static a vac formed canopy (or shrunk pop bottle in the current case) prior to attaching, so that it isn't full of bits.

onetenor17/02/2015 16:11:01
1900 forum posts

GOOGLE acrylic cleaners and polishes.Quite a few last time I looked

Herri17/02/2015 17:12:04
491 forum posts
695 photos

Thanks chaps, very informative. I' m sure I'll find something now. 😎


John Lee17/02/2015 17:33:28
653 forum posts
48 photos
Posted by David P Williams on 17/02/2015 16:01:48:

On a related matter, what's the best way to de-static a vac formed canopy (or shrunk pop bottle in the current case) prior to attaching, so that it isn't full of bits.

A few drops of fabric conditioner in a bowl of water does the trick.

David P Williams17/02/2015 18:15:25
841 forum posts
282 photos

Thanks John I'll give that a go.

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