![]() ![]() But since you are interested in pure mathematical functions for your project, any real number is fair game. ![]() 001 represents a length in mm which is a very small number and could be neglected. It is pretty well explained in the first comment in reply to this issue: It has been reported as a bug several times, but actually is a feature. 001) are combined with each other to avoid other problems. Points that are very close together (say less that. The issue gets into the details of how the 2D code libraries are used by the OpenSCAD developers. ![]() If not it probably should be because it trips people up. Please keep us posted on how you do in your science fair, and GOOD LUCK! I hope this wasn't too complicated, or too boring. I recommend saving each tip with a useful file name like cone_90deg.scad. it is probably easiest to use brute force, and then you can get on with experimentation. Manually altering each rocket tip profile is more so a brute force approach. The following script produces a triangle with polygon(), and then rotates it in to a cone with an 90 degree included angle.Īlthough it may seem a little backwards when you look hard at it. I'll guess you'll want to test some cones, some parabolas, sphere, flat, and maybe a few more that your imagination farts out. The straighter the profile, the fewer points you'll need. I imagine 3-20 points should be enough to define a profile for what you are looking for. Or, USE PAPER, and make yourself an X-Y chart to calculate all your Y points based on your chosen formulae. I can post a "Thing" on thingiverse with an example spreadsheet if you want. Using any spreadsheet(LibreOffice) you can populate a points list to make your profile. Then use rotate_extrude to spin the profile, kinda like on a lathe. Using OpenSCAD you can plot a profile with polyline() Zweidimensionales Polygon bestimmt durch f(x), x aus Formgebende Funktion x aus, stetig steigend in I am sorry, to be too late, 'cause jcernato already did the same approach :-( You can also change the values of x0 and xe, if a different part of the function is needed.Īttention: Needs at least OpenSCAD version 2015.03! Call cone_r with desired radius and height and this code calculates the cone automatically. This is my solution: Simply enter the function as f(x). ![]()
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