airfoil parametric bulb for rc sailboat

thingiverse

### naca (or any airfoil) parametric bulb with Openscad. Perfect for 3d printed (lead casting) rc sailboat bulb. Thingiverse is missing archive or directory upload - not appropriate for openSCAD. Please take the complete source from my GITHUB: <a href="https://github.com/guillaumef/naca-parametric-bulb">Complete source code</a>. Code > Download ZIP. This project manages: * symmetric / asymmetric airfoil profile. * complex/custom section - included circle, ellipse, flatten ellipse, round square, trapeze. * beaver tail. * split rendering How-to: * Download <a href="https://github.com/guillaumef/naca-parametric-bulb/archive/main.zip">Github ZIP archive</a> * Install <a href="https://www.openscad.org/downloads.html">OpenSCAD</a> * Decompress the archive * Run openSCAD on bulb.scad * Edit bulb.scad and tweak the header to fit your needs (documentation in the code) Add new airfoil: * You have complete "ready to use" scad files on my github <a href="https://github.com/guillaumef/openscad-airfoil">Airfoil database</a> * Choose one and move it to the directory "airfoil" * Open the scad file to copy the header (copy/paste part) - 4 lines. * Open the bulb.scad to paste the header, replace the previous airfoil with yours. To reach the right weight: * generate the STL file * get the associated volume in cm3 (DuckDuckGo: "stl volume calculator") * compute your material volume to weight (i.e. lead weight grams per cubic cm: 11.342) * fine tune the scale factor or the form