How do I shine up and hide some scratches on plexi glass?

[BlingBling]

I cut a plexi glass to the right size for my window, but it was a piece of plexi that was sitting in the garage...so i need to shine it up, and take away or hide some scratches....what can i do?

[Stone17]

Maybe get some buffing compound and buff them out. Just make sure that you either use low speed RPM or if you must use high RPM, just don't sit in 1 spot for too long, or you'll put a burn mark on the surface. Those are a pain in the arse!!

[BlingBling]

Originally posted by Stone17
Maybe get some buffing compound and buff them out. Just make sure that you either use low speed RPM or if you must use high RPM, just don't sit in 1 spot for too long, or you'll put a burn mark on the surface. Those are a pain in the arse!!

buffing compound like turtle wax? so i just take a lot of it and dump it on the window and then wipe it all around?

need more help

[Ruler2112]

I make knives as a hobby and use buffing compound on a buffing wheel mounted on my grinder. I think this would be excellent for this, but like advised above, don't sit in one spot too long!

You can find such buffing compounds at Sears in the tools near the grinding wheels. It comes as a stick that's somewhat sticky. As you put it on the wheel, some will fly out; when a lot of it starts flying out, the wheel is loaded and ready to use.

[Stone17]

You can either use the buffing attachment for a bench grinder, or you can use a random orbital buffer. its a handheld tool, in which the disc has a foam pad on it on which you would put a terry like cloth designed just for that tool. It spins only when not being used on a surface. When used on a surface, it will rotate back and forth very quickly.

Knothead's the expert on this.

[Knothead]

Unless you've got truly AWESOME surface scratches, I would be very hesitant to use buffing attachments, etc.

Not that they don't work, but my experience is that sometimes the buffing surface either loads up with stuff, = not effective, or maybe the buffing cover tears and slips = OH, NO!!

What works for me is hand buffing, and the right products:

NOVUS Plastic Polish This comes in "grades"--#1,2,and 3 (#3 being for the most severe scratches.).

If you work with acrylic, you need to have at least #2 and #3 on hand. With an ordinary scratch (the kind you get from something abrading the surface, not an errant scoring line) you rub it out with #3.

This'll leave the surface smooth, but a bit dull. Then you move on to #2.

BTW, the #2 polish is excellent for rescuing a lightly scratched CD.

For your nearest distributor, call
1-800-548-6872.

There's also an excellent product called Brillianize which cleans and GLAZES in one step...Distributors, 1-800-445-9344

There ya go!

[Knothead]

Shahani, you've done this a bunch of times...HOW DO YOU DO THAT??? I mean, knowing where I'm gonna post next....it's CREEPY!

YGPM.

[John Prophet]

Hmm..my first thought would be....if youve went to all the trouble to cut a hole....why not just go get another piece of plexi?? Wouldnt that be chaper and wayyyyy easier than all this buffing experimentation?