Tutorial: How to make a rigid base for your knit or crochet bag

One of the most common questions I get is How do I make a base for my bag? After a bit of trial and error I came up with this technique, I hope it helps.  The instructions are in PDF format which you can get by clicking the image or the link below.  This is the method I used in my Uncubed bag pictured below and the bags have held up quite well

You can download the file by clicking this link MakeARigidBase