Amazing how you asked how to scan 120 film and got practically no answers, regardless if you are shooting 6x6 6x.4.5 6x7 or 6x9 120 or 220 film will respond the same as 135 35 mm, 120 film is 60mm. You will need to reflect the scanner back on its self, similar to the back light used for negative scanning. In my testing laying a flat piece of paper, stock, reflective material won't work. You will need to create an encapsulation device, using silver stock, or 80 percent gray, and create a sort of cover to reflect the image back on the scanner. https://cdn.makezine.com/make/craft/2011/07/slidescanner_template.pdf , this template is for 135, but it works on 120 just fine despite what you will here. I like spending as little as possible, and creating an image without throwing thousands of dollars at it. This template works well with, high gloss printer paper, silver stock, but I have even used pastels to color it in. In the end listen to no one, do what you want, and create what you want, in the end photography is all about you, and what you like is more important than, chemicals, drying processing, digital manipulation, scan size, scan resolution, or using your smart phone. The photo of the year at the Detroit Zoo last years winner was taken with a go pro, not a 20,000 dollar lens, or a Leica camera. Great images cant be bought, they take time, understanding, and knowledge of the craft.