I want to build a screen out of 5/4 x 4 ipe boards with 1/2" spacing, using some sort of hidden fasteners. All the hidden fastener systems that I was able to find so far are designed for decking, and offer the maximum spacing of 1/4"... Is it possible to use one of these systems, but set the boards wider apart?
Most of the deck brackets are installed board at a time, and the last bracket holds the next board.
The Shadoe Track however is a continuous rail, with conventional screws from below. It can be set at any spacing.