A biplane with a jet engine was an interesting idea to me. The model has smaller dimensions, 102 X 157mm. I tried to adapt it for making plastic models, and the files for 3d printing are attached. By the way, in the attachments there are also parts with preparation for joining, preferably with hobby glue for plastic. In DryCnnct.zip archive are parts for dry joinning. I hope I got all the dimensions right. If there are any suggestions or objections, feel free to contact me.