About a year ago I bought some celtic knot cutters. Some of them work okay for me but some of them are extremely detailed and fine, and I can NOT figure out how I'm supposed to use them/get the fondant out/keep the fondant together (gumpaste, whatever).
They'd be beautiful if I could figure them out....
I do not own these cutters, however I remember reading on a tappits post that some people place plastic wrap over the fondant before cutting and it releases without issue. HTH
I use Patchwork cutters a lot although I haven't used this set. Normally you use Mexican paste rolled very thinly. The cutters have to be well greased with Trex (Crisco) each time you use it. When you lift the cutter you can remove surplus paste around the shape and any unwanted pieces in the design with a cocktail stick. HTH
What is Mexican paste?
It's a mix of icing sugar (PS), gum trag and water.
Here is a link to how it is made.