There are several other options to print. You could always copy the file to a thumb drive and take it to your local library, Office Depot, Staples or even some of the Drugstores have printers you can use. IMO...The newspaper/rough type paper is better than the regular copy paper for paper piecing. The cheapest way to do it is to go buy a drawing pad from the dollar store and trim the paper down to 8.5 x 11 so it will run thru a copier/printer. From past experience, I can tell you not to try to print more than a single copy at a time because the paper will jam in the printer. Ask me how I know that???
Which Union Square pattern are you trying to do? The one with the 9 patch on point in the middle:
http://quiltingbeargal.blogspot.com/...ilt-block.html
or the one with the Half Square Triangles all around the outside and the square in a Square middle?
https://www.generations-quilt-patter...ilt-block.html