You can build a frame without a "fixture" but you need to do a lot of math and have a real understanding of what your objectives are. I build these frames in my shop and make all the pieces myself. There is almost nothing available for commercial frame building that would work on something like this. The basis of the building system is simply nice square pieces with holes in them. I have built frames in fixtures made of high density particle board with stacks of washers for creating. You should swing by my shop at some point. I am in Vermont.

I can't teach you to build with pins but I can give you an understanding of the process that one might use to hold the parts at correct relations using junk from home depot or a junk yard.


IMG_3377 by frankthewelder, on Flickr