Hello, I have seen someone use a wooden register type T square for use with their Gel plate. I think his was home made but would there be such a thing to purchase? Basically just wood at right angles to each other that the gel plate sits against and a corner screwed into the wood that the paper sits into. Oh dear, I hope you understand what I am trying to explain. Any help gratefully received!
Thank you for your question. The item litrealy is called a T Square. I have attatched the link below for you.