I have updated the following:

1. hand grip changed from smooth to woven grip.
2. base of handle updated to allow for easier attachment of keychain.
3. updated supports to address issues with printing original model.
4. updated core of model to allow you to place a wooden dowel down entire model and stabilize. The dowel size I used is ¼ inch wide and 4 feet long. I had to trim off about 10 inches from the dowel, so you could probably just use a 3 foot dowel. Dowel not required, but I do think it is helpful.