Clip to attach a sheet of plastic to a half-inch PVC pipe

Clip holds attaches a sheet of plastic to a half-inch PVC pipe. This can be used to cover a frame made out of PVC with a sheet of plastic. One use is in making a coldframe formed with hoops of PVC pipe and a sheet of clear plastic covering the hoops, weighted down along the edges and fastened to the end hoops with these clips. These clips can be used to hold open the ends of the coldframe for ventilation when the sun is open.Any application where a thin sheet of material is to be clamped to a PVC pipe.PETG is preferred for strength properties. Infill of 20% works for me, but higher infill can be used for a stronger part.