The insides are from MrCrayFish Furniture Mod (http://www.mrcrayfish.com/). I could recreate them, but right now we are working on a much bigger house, as well as creating all the letters of the alphabet in 3d for big signs. Thanks for your kind words though.
Using the 3d Printer, I printed an entire house. It takes about 1 1/2 minecraft days to print the correct number of pieces which is: H1 - 58 door_frame_right - 4 door_frame_left - 4 door_top - 2 door_bottom - 2 window - 8 ceiling - 24 (or 25) trim - 12 soffit - 10 soffit_side_right - 2 soffit_side_left - 2 roof - 20 roof_left - 4 roof_right - 4 roof_cap - 5 roof_cap_side - 2 This will make a 5x5 house. parts.zip