Chair Design

I have started working on potential chair designs for a new Dinning Table Set that I am going to be building in the near future.  My plane is to build the majority for the framing structure from 2x4’s.  The picture below is a rough sketch of what I am thinking about.  The sketch is not to scale or size currently.  I will post those once I get that taken care of and I also have a third design I am going to work up.  It will be the same principal however I will change the skirting just a little bit.  Here are the first two designs.  One thing to note is that the backs will be curved and slanted, I have not figured out how to do that yet in SketchUp.