Originally Posted by Prism99

I think what you would do with a frame like this is thumb-tack fabric leaders to the top of the frame. You would then hand baste tapestry canvas to the leaders. Alternatively, you could tack the canvas directly to the frame. This website shows how to do the latter, but that would probably be more appropriate for a cheaper, throw-away type frame:
https://www.pinterest.com/pin/Aflptf...sQjr0K7-Mnd1Y/