skyl4rk wrote:My first attempt will be to lay landscape fabric on a foam panel, then paint over it. My hope is that because the landscape fabric threads are not porous, the paint will flow through and cover the foam and cloth with the first coat. That would mean no adhesive is required.
This is just a theory.
Adhesive is definitely required, it's just that foamie technique uses the paint as an adhesive if not using one dedicated to the task.
That was the beauty of Glidden Gripper, but since they changed the formula, likely that the community needs to do more research on alternatives that work with the usual fabrics.
By changing to different fabrics, that research will become much closer to "from scratch", the foam element being the only constant remaining.
Of course any new research and testing of that adhesion would be most welcome
but if you are looking for confirmation of "will it work"? with new materials that is likely more going to be something we learn from you rather than other way around.