I say no to soldering, brazing, welding, drilling, etc. Use P-clamps with Nashbar lowriders for the cheap but just-fine option. (I just bought some Nashbar Lowriders for my son. They seem identical to the Blackburn Lowriders I used for years, and which never gave me any trouble.) I just checked Nashbar's site and didn't see them so maybe they're out. Nashbar (and REI) seem to take items off their websites and later put them back, depending on their stocks. However, as someone else mentioned, something similar is available at Amazon:



If you want to spend some more money, go with Tubus or Jandd (or others I'm not as familiar with?) with P-clamps, or the Old Man Mountain rack pictured above.