Thanks a lot Charlie. I'm still new to the DIY razor scene so I was unfamiliar with the vocabulary. Those do look exactly like what I need and you're right about having to enlarge the hole. The blade I'm working on is a rather delicate FW Engels Perfection 5/8 and has proven to be daintier in its dimensions that most of the other razors I have.

I think I'll just have to make one on the lathe like you. Is there any trick to it or do you just get a rod, tap the end, and then take a file to it on the lathe?