Ugly baseboards help!?

My Metal baseboard enclosures are dented rusted and ugly. I could remove them sand them pound out the dents and repaint them but that is alot more work and expenense than you may realize. I have seen just the metal enclosures a lowes but I can not bring myself to spend the money. Just the enclosure for a 6 foot section for example cost about $60. The enclosure with the piping and fins cost only about $10 of $15 bucks more. Are there any other cheaper replacements out there? I thought about building them out of wood ( I probally have every woodworking tool known to man available to me) but I know the wood will expand & contract & eventally warp and look bad also. any suggestions???