Proper 3d printed handle (Slant 3D optimized)

This is a handle based on Slant' 3D's video about hoe to design strong handle. I made it because they did not do a model to sell on their site and it seems so useful.I use it on my kid's tree house. Printed in HF PETG it can lift me off the ground and I'm 240 pounds.Fix them with wood screws (#8 wood screws for my fellow Canadian). You can tight them pretty hard, I use an impact driver and I just stop when the driver starts bogging. I didn't do the teardrop wholes as suggested by Slant 3D because I used this model to learn OnShape and I don't know how to do them in that CAD software. To that end, the OnShape file is available here https://cad.onshape.com/documents/716dac9a8254b4dae698f852/w/0f989670154452d6e4229b32/e/ce3cec3b81826ae238c2cfdc?renderMode=0&uiState=6855436fdea46470fd038dc2