Okay, these are not your typical ukuleles. They all have aluminum bodies, some are hammer-formed and some are machined from aluminum block.
The red and blue body ukuleles are hammer-formed aluminum sides with the top and bottom rivieted to the sides. I have two of these at home because I made the red one for Jake Shimabukuro after meeting him at a concert. I have helped about 60 students/boy scouts make this style over the past several years.
The two silver and the purple body ukuleles are machined from billet aluminum with the top riveted to it. I designed the body in CAD and then machined it on a CNC mill. The sound hole on the top is of a celtic knot I like and the top is cut out using a waterjet. I made 10 of these. Just like the sheet metal bodies, they are a soprano.
I have also machined two bodies in the tenor size. I just haven't gotten the necks, fret boards, etc... to finish them off. I am going to electrify one of the sopranos and one of the tenors.
It is fun and very addictive to build these ukuleles. I just need to practice a lot more so that I can play them better.
I hope you enjoy looking at them.
Eric