Graham Crain jokes that his parents are teachers and coaches, and were the first to question him going out on his own in business years ago. So they undoubtedly have to be taking Crain's latest project in with a healthy bit of interest — but also with a lot of support.
Crain is the leader of the Crain Co., which has created CC3D, a company that this fall is expected to begin construction of 3D-printed homes in Valley Center.
3D printing for homes isn't new; in fact it's popular in Europe and…
