For scratchbuilding, I pressume with styrene, you would more then likely want a xacto miter box and razor saw. Also some good emory boards(finger nail filers) and or a set of small hobby files. Will also want a good stock of liquid glue. Tenax 7R is good, but Pro weld is just as good and usually cheaper for a bigger bottle, depending on the hobby store. You will also want either a metal piece with magnets, or something else with maybe padded clips to hold your pieces together while they cure if making such things as frames. Commen sizes I find are 1", 2" and 2"x3" stock. Also sheet plastic and flat strips. Depending on what you want to build, will depend on what ya will want for styrene. Check out JimsDollhousepages hobby scale calculator to determine what sizes you want bot standerd and metric. I hope this helps some. If you can afford it, a small hobby "chop saw" would be great for doing different angles!Jody