The Solar Kiln construction drawings are 3D renderings of the entire building process, step-by-step. We built ours with rough sawn material, so I dimensioned the drawings so that you could use either rough-sawn or dressed dimensional lumber to build the kiln. If you have any questions, or would like me to send the SketchUp file for easy reference, please email: logan@heirloombuilders.com. Thanks for your support!