Hello to all. I have checked out the fourm for a while but this is my first post. I asking for some help, I would like to know what is the best and cheapest (FREE) drawing program I can use for the design of my future WFO. I intend to make forms for refractory cement pieces like Ed Schmidt made. I enjoy working with concrete and cement. I hope I will enjoy it when I am done!! If this fails I will use the "Dmun" system. The program will help me with the proper angles and dimensions. Thanks to all.