Is this model based on a ******* engine? Our model kits are inspired by many of the great engines of the past. However, we rearrange the parts so that they are visible. Since the parts are rearranged and stylized, we do not say that our kits are based on any particular engine. What is included in your model kits? Most of the parts in our model kits are laser cut Baltic Birch plywood. There are also pieces of Poplar Dowel rods that are cut to the rough shape required to complete the models, along with instructions and small any small hardware parts needed to complete the model. Most of the dowel rods will require quite a bit of sanding, and any optional decorative interior drilling you desire. Some people may chose to fabricate their own dowel rod pieces out of fancier woods than the poplar wood in the kits, but these pieces are not supplied. What tools and additional items are needed to assemble your model kits? At a minimum, you will need sandpaper, wood glue, and a hobby knife. Waxed paper is also highly recommended. You may also need a screwdriver. Any other tools you have access to can only make the process easier. Can I motorize your model kits? These model kits have wood on wood bearing surfaces, and are not intended to turn at high speeds. Low speed motorization is possible, but may require you to provide longer drive shafts, gears, chains, or other items. We do not support motorization, but it is certainly possible. Can I paint the model? Can I varnish the model? Our model kits are made to close tolerances. Very thin finishes can be used, but any thick finishes will likely interfere with the moving parts. Will I be able to build one of your models? Will my 12 year old be able to build one of your models? We honestly can't answer this question. These model kits require patience and precision to assemble. Please download the instructions and study them. If they make sense to you (or your 12 year old), you will probably be successful. If they appear impossibly difficult, these may not be for you. I broke/lost/want a part. Can I get a spare? Yes. Please contact us, and tell us the name of the part as it is introduced in the instructions. We probably have dozens of extras lying around. If we do't, we will cut you one. Can I use two of your kits to build a 14 cylinder radial? It depends on how determined you are. We do not support modifying kits, but we are happy to see your results. Can you make a ******* model for me? Maybe. Let us know what you would like to see. Will you ever make anything besides engines? Probably. Check back over time and see. Will you sell your kits wholesale? That depends on the situation. Contact us to talk. Can I get a copy of your cut file and cut it on my laser cutter? Sorry, but no.Can I get my question in your FAQ? Probably - if you ask frequently enough!