Taking a mold to match trim?

I’ve just finished restoring the woodwork and have some places where the wood was too damaged from pipes bursting and leaky windows to be salvaged. I’ve gone all over to match this trim but to no avail. Someone told me there is a place that will give me something to make a mold of the trim and then they can match the shape? Did I hear this entirely wrong? Anyone ever heard of anything vaguely similar?

Many thanks.

By |