Ok here's an idea that's a bit out there. I'd like to get a scrub plane because I'm planning on building a new workbench this spring and using old barn 6×6 timbers as a starting point for the top. So I'm thinking having a scrub plane to start flattening the top would be handy. Now I could go find an old one on ebay, since I haven't seen one on craigslist within 300 miles after a couple months of looking. Since I'm cheap and don't want to drop $80-$120 on one it got me thinking. Could you take a cheap crappy home cheapo buck bros No 4 clone and grind a radius on the iron and call it a day? I've got one from back when I wouldn't know a good plane from a ham sandwich and it's a paper weight right now. So I'm wondering if I could convert it. Am I crazy or am I on to something?