Here is the Fiskars Paper Crimper. It creates the nice corrugated pattern in the tin. Under the crimper is the tin from the can of an Arnold Palmer drink. It is a favorite drink of my parent-in-laws. Although a little taller than a standard 12oz can of soda, both work equally as well. Not pictured, a Kitchen Shears similar to the one linked, was used to cut the beverage container apart. Do not use the household shears for this! Cutting tin isn't its designed function and although it will cut dozens/hundreds of cans apart without fail, it will be significantly traumatized by the experience and will never cut the same again. If you do have one in the kitchen, you might consider buying a new one and swapping it out for the old one. The old one can then migrate to the hobby tool chest and the kitchen can take advantage of a shiny brand new one. Win-win for all involved. ;)
Moving on, the glue I use for this step is Gorilla Super Glue. It is less expensive per ounce than the Loctite I use for gluing the balsa together, has more working time, and forms a little better bond between the tin sheets. The extra working time requires the use of clamps and clothes pins to keep the pressure on the pieces long enough for the bond to form. I highly recommend wearing disposable gloves and a respirator when working with the Gorilla Glue. I happen to be somewhat allergic to the fumes so the 3M Respirator I purchased allows me to work with the stuff safely. Getting the glue stuck to my fingers (which is inevitable when working with so much of it for so long) is extremely irritating and painful to get off so the gloves are a big help. Plus, the gloves help prevent getting poked and cut by the sharp edges of the tin. Ok, enough talk about safety equipment...
Wolfcraft QUICK-JAW Needle Nose Spring Clamps. I got mine from Menards.
The round black things on the right side of the frame are magnets. Another pair of them are on the underside of the roof. They are working to press together a particularly troublesome pair of tin sheets long enough for the glue to set up.
So far the roof is shaping up quite nicely. Another couple hours and it should be all tinned up. Most likely I'll forget to leave a hole for the chimney, but I'm hoping that writing it here will help me to remember. ;)