The smaller version only has MDF to help hold the shape, so the bend along the front and back rails are needed. For this larger version, the 80-20 frame extrusions will provide the needed structural depth and will help mitigate any twisting or racking up to a point. Probably good enough for most things like routing wood panels. But the great thing is that it's an 80-20 frame. You' be able to easily attach rigidizing components or to a solid table/surface to help stiffen it more.WillAdams wrote:Interesting. I’m kind of surprised at where the bends are in the front/back plates — is there some reason not to just get longer versions of the current style? Seems to me that would be more resistant to bending / twisting / racking.
At some point there is a cost trade. Add more material or design features, the more expensive it'll cost for both the manufacturer and consumer. This design looks like a great start to me. Given that the 80-20 makes it really adaptable to most situations or requirements.