These clamps are the best I have ever found for building Dollhouses, small furniture, etc.  They are padded well so they don't mar the wood and they clamp very tightly as well.  I have used them for several years, as they are available at a local Home Improvement store.  Yes, they are pricey but they are top of the line.  They make bigger ones as well and I love them, too.  I have never had even 1 break!  Buy these, you won't be sorry!