Concrete Hand Edger

I want to use dry concrete to make a step, and I need a Concrete Hand Edger. For my application, first, I don't need to use too much force, and second, I don't need to be very durable, so why not print one yourself? If you are not using it once (I have used it, and it hasn't broken. I guess it will be fine if I use it ten times like I do, provided that it is not deformed in the garage), I suggest you buy a stainless steel one.