Hardware needed: 1/4" x 1-1/4" SS bolt, washer and nut. 1" by 1/8" pin, SS or plastic.
This tarp clamp has 2 major advantages over anything I have seen that you can buy:
You can secure it very strongly to the tarp with the 1/4" stainless screw, nut and thumbnut knob, unlike other clamps with plastic securing features. Loose tarp clamps let the tarp slide out of the jaws. Also, the thickness of the opening is adjustable.
- The thumb rest allows you to easily control the clamp opening with one hand, no spring needed.
Print fairly solid for strength, with at least 50% infill. Use 5 layers top and bottom, and 10 perimeter layers.
The upper red piece is tricky to get good bed adhesion. I used 7 outlines, 2 layers skirt at 0mm distance. Also, rotate the upper piece to get the support crossing the upper piece at right angles. I used HIPS at 50% cooling. This piece uses little support, but suppoert is critical.
I have used tarp clamps for years, but it is difficult to get them to hold onto a tarp properly. I wanted something easy to use, with great gripping power. After finishing development, printing and testing, I checked Amazon for something similar, but I think this is better than anything I have seen. Source code is included in case anyone can improve on it.
I printed it in contrasting colors to make it easy to find.