i have a bunch of watches i wanna clean up, with some scratches....

wanna do it myself any tips on how to do it? too expensive through a jeweler...

Scratches on the crystal? This is how I do it.

 

http://www.esslinger...sscrystals.aspx

It just a matter of buffing with lightly abrasive media, I use maas I believe its called.

just some food for thought, if the scratch is deep, it may not be worth fixing... i scratched the face of mine pretty bad, on a smooth lab table none the less. That table did some serious damage, it looked like i brushed up against a brick wall. I tried buffing it out, but it was just too deep... you can find replacement crystal for pretty cheep if your willing to take it apart. That's what i did, actually i bought the crystal and had a friends bro who collects and refurbishes watches do it for me. Cost me something like 15 bucks.

It depends on the watch and what its worth, just an example if you try to replace the crystal on a tag heuer.

You could possibly do it right but odds are, either it will no longer be water tight to the spec depths which is the glory behind tags is you can really dive with them. Another scenario the value can be killed if it can be spotted by a jeweler that the crystal has been changed. With their watches ranging $600-$80,000 dollars it could be a costly decision.

That is just an example but things that need to be considered with fixing or working on watches.