Ground anchor, tent stake

thingiverse

I utilized Greg Adamson's design, thanks for the ingenious idea, and aimed to simplify printing by implementing a two-piece setup that allows for reinforcing the anchor with glue or a screw (SPAX 4.3x100mm) inserted into the core. I also uploaded a one-piece version - more challenging to print, yet easier to use. Simply drill out the filling material and attach the screw with glue. Alternatively, you can fill it with epoxy instead of using a screw. The screw offers the advantage that you can utilize your power drill to drive the anchor into the ground. I added a Mark II version featuring a hex head (17mm) after testing the design and discovering that the screw tends to split the two parts when used to drive the anchor into the ground. On the final picture, you see the MkII with the screw. I trimmed off the tip of the screw and created a groove in the screw to enhance grip when attached to the core. If you wish to modify the design, you can do so on Onshape.com.