You can use 3M contact cement or the like. You cut the former templates from the plans and use the cement (lightly!) tack the cut out pieces of paper to a sheet of whatever-sized balsa you need. I went to Staples and had a few copies of the plans made. One to put aside and re-copy when I'm ready to build another one, one set to use as a buliding copy, and one to cut apart and use as templates. You really only need two sets because all the templates are put off to the side in the plans. Cut out the templates and glue them to wood, then cut just about up to the line with a scroll saw, then sand to the line with a hobby sander. The final touches can be done with a hand sander. When you're ready to put things in place it really helps because all the pieces are labeled by the paper. But heres where the LIGHT spray of contact cement comes in: pull the paper off before building Hope that helps.

Oh, you can get the spray on contact cement from any place like Staples.

-Dave