Good job, if it cuts it doesn't matter how you got there. My first reamer didn't cut well. With a little bit of creativity you can cut the flutes on your lathe. I've seen where guys held the reamer blank in the tool post and an end mill in the lathe, and also held it in the lathe between centers as normal and used the bull gear to index the reamer and cut the flutes with an die grinder held on the tool post.