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I'm experimenting with making my own dash out of some salvaged components. Problem is one of the plexi covers to a tach that i've got has a fogged appearance due to many fine scratches on the clear plexi cover. I assumed that i would be able to just order a new plexi-glass piece from ducati but was told by my dealer that this cannot be done and instead an entirely new tachometer must be ordered as it is all one assembly


is there a method of buffin that can take the find scrates out? is it as simple a buying a buffing wheel for a bench grinder, or do i need to use a buffing compound as well (like waxing a car). I'm fairly ignorant on this so any info is appreciated. Thanks!
 
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run a search on the internet for it..

basically involved several steps, starting from wetsanding (depends on the scratches what grit paper you start out with), then polishing it with special compound, then buffing it, etc.
 
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Re: A way to take fine scratches out of plexi glass? (monarc)

I've never tried it, but I've been told it works.

http://www.flitz.com/

Wouldn't hurt to try.
 
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Re: A way to take fine scratches out of plexi glass? (Mental998)

We do it everyday at my shop. basically if you can feel the scratch with your fingernail you will have to sand it in 200 grit intervals starting with 600 ending with 1500. then polishing it with metal polishing rouge.

The most important thing is to control the heat you generate as the melting point on acrylic is under 300 degrees, very easy to exceed even hand sanding.
 
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Re: A way to take fine scratches out of plexi glass? (sp2pilot)

I have sanded gouges out with 320 wet and 1200 afterwards, nothing in between, then polished with coarse compound and then swirl remover, all for automotive paint, and had the plastic turn out looking like new. and all with a wool and foam pads.
 
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Re: A way to take fine scratches out of plexi glass? (sp2pilot)

thanks for the input guys. the melting was something i was worried about. sounds like a steady process is best.
 
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Re: A way to take fine scratches out of plexi glass? (monarc)

Flitz is awsum
.. but you can also try 3m's CLEAR PLASTIC POLISH (10) and CLEAR PLASTIC CLEANER (17) .. myself i use flitz ,,, because it works .. sanding ... depending on how deep the scratches are ( if you can feel them with your finger nail ) start with 5,6 or 800 grit wet sand paper for softer materials like plastic (320 to 400 on paint ), then progress to finer grits 1200 to 2500 .. remember before you start to sand soak the paper over night and add a few drops of dish washing soap ( dawn ) polishing ,, you can use a dremel tool with a felt or cotton wheel ( USE LOWER R.P.M.'S OR YOU WILL BURN THE PLASTIC ) or you can polish by hand ...
 
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Re: A way to take fine scratches out of plexi glass? (monarc)

Have you tried Plexus? http://www.plexusplasticcleaner.com The stuff works real well for a period of time, then just re-apply. If the scratch's are too much for Plexus, head to your local airport, nab one of the tech's and ask him for a smear of windscreen compound. I have a tube that has lasted for about 15 years, they use it for the windscreen's on aircraft and it works like magic.

Good luck....

DW
 
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