Sanding the razor is time consuming but well worth it. Check here it's what got me started
Category:Blade Restoration - Straight Razor Place Wiki
You will go through various grits of sand paper and I usually stop around 1500 or 2K. Use different directions with each grit that way you can see when the scratches from the grit before are gone. After that I use MAAS but there are other polishing compounds that will work. It takes some work but the finished product is worth it. Good luck.
Check this out
Before
http://straightrazorpalace.com/membe...d-up-boker.jpg
After
http://straightrazorpalace.com/membe...illy-boker.jpg