I've heard newspaper works too...

it has been some time, however I had a set that were very hazy with surface hairline cracks. I started with 800 grit and got no where. Started again with 320 and sanded aggressively using a DA/ Dry. Canopy turned "white" and I removed a lot of material. Thought I ruined the canopy, but I worked my way up to 1000 and the canopies came out great and very clear

A work of caution - too much time in one spot will create a "lens" and even though it is clear you may have a spot that is magnified. Keep you sanding tools moving.

Were they polycarbonate? Did you use anything after the 1000 grit?
Thanks

That's the stuff. Depending on the age their probably 350kt strike,
newer ones are 550kt. If I remember correctly, 3 layers composed of polycarbonate on the inside and outside and acrylic in the middle.

Any aircraft mechanic can point you in the right direction to a
company in your area that provides the service.

If they are crazing (little hairline cracks in the acrylic), there
is nothing you can do but call Skater.

http://www.texstars.com/files/File/P...ansparency.pps