Mold for making concrete garden edge stones?
Howdy! I've never made a mold before but I'd like to take on a (potentially overambitious) project of making my own mold for casting garden stones to line the edge of my flower plot with.
I would likely 3d model the object that I want to make the casting of, then use some type of quick drying concrete in the mold itself. My question is-- what type of mold should I use for casting concrete? Silicone? I'm not looking to spend a ton of money on something I may only do once but I'm also a believer in doing things right the first time rather than super cheaply.
Thank you for any and all advice on the matter :D