http://www.galerie-photo.info/forumg...,168870,168928

http://www.galerie-photo.info/forumg...,189149,189149

The OP might be better off with a 4x5 Crown Graphic, which will easily focus a 58/5.6 SAXL. I hesitate to suggest it, but a 4x5 Pacemaker Speed Graphic will also focus the lens to infinity. These and the Maleific aren't consistent with the OP's desire to build a camera from scratch.