There have been numerous times when it would be useful to attach a GoPro using a clamp, but the only thing I found on the Internet was around $40 and that seemed ridiculous. After searching around for some homemade solutions, I built this:
All of the parts came from Home Depot and the total bill was less than $2. The only specific part that you’d need to copy is the bolt. A standard camera mount accepts a 1/4” bolt with 20 threads per inch. That was the standard number of threads in the bolts at Home Depot so it all went together very easily.
Don’t pay more if you don’t have to!