Greetings to all from Chile, I have a question ,

Greetings to all from Chile, I have a question , some of you have done this printer profiles 30x30 but what happens is that in Chile do not sell 20x20 .

What is available? Imperial? If si I’ve done 10/10 which is 1 inch by 1 inch

30x30 milimeters

How big is the center hole? and is it circular? I’ve seen some weird holes. Using square tubing like @Shauki may be your best route. 3030 is heavy and the tnuts and whatnot get expensive. You could even rivet together angle. And bolt the x/y plates on if you use the flat style I’m using now. Check my pics of the UL-T-Slot to see what I mean.if you have means to print now, I would print inserts for the tubing for building the frame. like t’s and angles. These could be attached with bolts. Would even lighten the build. Like this. https://www.shapeways.com/wordpress/wp-content/uploads/2010/10/shapeways3dprintedfurniturecomponent2.jpg