Thanks Ken. I think you may be right on the blade and button being one piece. Over the weekend I did design in Fusion 360 a sight and during that design process I did identify that the blade and button could be one part. However as designed, currently there wasn't enough room for the spring detent inside. I think your idea is the best so maybe I will assess the dimensions again and see in more room is possible.
However thank you again for your input. As soon as I get a workable solution I will post pics of the 3D models.