Cut the bristol board along the outer perimeter of each floor level with a utility knife. For a split level house or a house with changes in flooring height on a single level for example, a sunken living room or an alcove with a raised floor, consider each split level or floor height change as a separate house level and cut it out. Interior Walls. Starting with your lowest house level, for each interior wall Calculate the height difference from the floor level to the next floor level. In other words include the thickness of the floor joists. For example, if the actual height of the wall from floor to ceiling will be nine feet and the floor joists will be about a foot, the total height is 1. If you are using a 12 1 scale, this height difference for the 3. D house model will be 5 inches. With a ruler, measure the horizontal length of the wall on your floor plan. Cut out a rectangular piece of bristol board for the wall with the same wall length you measured and the scaled wall height really the height difference between floor levels. If this interior wall will have any openings in it doorways, etc., determine their measurements for the model and cut them out. For doors, you can just cut the top and opening side and fold the door open or you can simply cut the door right out. Using a hot glue gun tack this wall in place to the floor with a dot of glue you dont need much. It may flop over a bit until you have an adjacent wall to glue to it. Repeat this for each interior wall for this level, tacking adjacent walls together with a couple of dots from the glue gun where they meet. If you have any raised floor levels on this level, make several small posts the height that the floor will be raised on your model a real floor level rise of two feet will translate to an inch on a 12 1 scale model. These posts can be made out of any small objects such as toothpicks. Glue several of these posts to the floor of the house model and then glue the raised floor you have created on the bristol board on top of these posts. You may have to trim the edges of the floor a bit before placing it to make it fit within the interior walls. You should now have all the interior walls for the lowest level in your model. Building Additional Levels to Your 3. D Model. For each additional home level First repeat the process above for building the next levels interior walls. Then place the next level onto the tops of the interior walls of the level below. It is best not to glue this floor in place since this way you can still lift it out to view the lower level. In the interior of your model, your ceiling heights will be scaled higher than your real interior walls because the floor joists have been taken into account. However, if you dont do it this way the exterior of your house will not be scaled correctly. The overall model will be lower than it should be and this will affect the perception of your design. If you want to be really accurate you can cut out two copies of each floor level, then install one copy of the floor level as a ceiling and the next, on top of adequately sized posts, as the actual floor level. If you choose this method, all interior walls should be measured without the floor joist height added. Now before you build the roof, youll need to put on the exterior walls. Exterior Walls. Your exterior walls will probably bump out and in here and there. In some places you may have a wall that runs right from the ground all the way to where it meets the underside of the roof. In others it may run only the height of one level. We will consider each part of a wall that stays in the same plane as a single section. For each section of exterior wall On your model, measure its height and width. Cut out a piece of bristol board to these measurements. Glue the section of wall onto the outside of the house model with the hot glue gun. Note You will have to have designed your roof angles first before you can make any of the models exterior walls which touch the lower edge of the roof. Roof. The final step is to measure and cut out roof pieces. The nice thing about having the whole model put together by hot glue is that once you have the whole model together and you want to start fiddling around with changes, its easy with a touch of the hot tip of the glue gun to release a roof or wall section and then change the size or angle of that roof or wall. Below is the built house. You can see we changed a few things after making the model. The most noticeable change is that the two bumpouts visible in this view went from having angled exterior walls to square cornered walls. The land slopes down sharply behind and below the front deck the basement is above ground on this other side of the deck. Simple as it is, this model helped us immeasurably when we were deciding on window shapes and sizes, skylight placement, roof angles, and many more house design elements. Next ModuleMake Your Own Blueprint. After youve cycled through all the house design phases and you have finalized your sketches, it will be time to create your working drawings. Next tutorial section Module 1. Make Your Own Blueprint. No part of this web site may be reproduced or copied without written permission. Illegal Internet copies will be detected by Copyscape.