Assembling the 1/5th Scale R-986D from Atwood Aviation which was 3D printed for me at 9.6 inch diameter. I put it together with extra thick CA versus the epoxy recommended by Damon. The 4-Stroke 40cc gasoline engine runs very smooth so I don't think it will get shaken apart. We will see. Lower 2 cylinders omitted for cooling. Sprayed it with KRYLON Aluminum. I need to get some dark grey gloss for the crankcase tomorrow. I am studying the installation and contemplating a baffle, I have to figure out how to mount it all inside the cowling. Leo