Flattening jig inspired by Izzy PT1

I need to get some wood flattened and squared, and I don't have access to a planer or jointer, so what do I do? Answer: YouTube!

I searched around, and found this great idea for a flattening jig from the ingenious Izzy Swan. I really like his no-nonsense approach, and he has some great ideas.

So I made a SketchUp model of my interpretation of Izzy's jig. I'm a novice with SketchUp, so creating the model was a learning exercise in itself, but here its is in all it's glory.

SketchUp model of flattening jig

The dimensions are my own, and are a bit of guesswork loosely constrained by what pieces of 3/4" plywood I had available.

Let's see how it turns out in reality.

Edit:
I made it as pictured, but it didn't turn out too good (my fault), so I scrapped it, and made a better one, which is still not perfect, but is OK for now. I have some ideas how I can improve what I made further.

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