Led lighted golf ball replaceable materia

First off, thank you ohman74 for posting this fantastic Buster Sword
What a great model to work with!!


I wanted to make the materia in the sword light up and be replaceable. After searching for LED balls on Amazon I came up with this perfect solution.

https://www.amazon.com/gp/product/B0798KTK7R?pf_rd_r=BXG91HABQ5MTEMSAPF09&pf_rd_p=5ae2c7f8-e0c6-4f35-9071-dc3240e894a8&pd_rd_r=f957dffc-a9db-460b-9c27-1792bdda6af0&pd_rd_w=FAwbU&pd_rd_wg=Bg4Be&ref_=pd_gw_unk

Of course some modifications needed made. I designed a center nut to be printed out apart from the original blade 1 file then be inserted into the blade piece. The center nut will hold the ball in place, but will need the center nut caps to screw into it to keep the ball secure.
I posted some pics of the center nut welded into the blade piece, as well as the center nut cap outside the sword.
The caps can be removed once the sword is finished and different materia inserted into the sword.

I re-designed and printed bot