Get ready for the build of a lifetime. We've written these detailed instructions for this 1933 Pre-war OM-28 Acoustic Guitar Kit so you can build this guitar just like they did in the 1930s. We designed this kit for the small shop builder with a modest tool budget—you probably already own most of the items you'll need to build this guitar. See all of our StewMac Icon Guitar Kits to begin your build today. DOWNLOAD PDF Download 1933 Pre-war OM-28 Acoustic Guitar Kit Instructions 2.9MB View instructions with Adobe Acrobat Reader 4.0 or higher. Download Adobe Acrobat free from Adobe.