1
$\begingroup$

I have a solid of revolution defined by two equations, and I want to generate a STL file for printing from the difference of the two equations, revolved around x=0. I can get a good visualization when I query this on Wolfram Alpha, but I cannot figure out how to download an STL of this. I know there is a way to do this via Wolfram's Development Program but I'm not sure how or if that is the best way to do this. Solutions do not have to involve WA.

$\endgroup$
4
  • $\begingroup$ A programmatic CAD like OpenSCAD or implicitcad will do the job. $\endgroup$ – abruski May 16 '17 at 6:37
  • 2
    $\begingroup$ Yes, OpenSCAD is free; you should give it a try. $\endgroup$ – Davo May 16 '17 at 13:24
  • $\begingroup$ @Davo how can I enter equations into OpenSCAD $\endgroup$ – werdna3232 May 16 '17 at 13:28
  • 1
    $\begingroup$ Well, I'm not an OpenSCAD guy, but I've seen people work wonders with it. The download includes practice formulas and tutorials, if memory serves. $\endgroup$ – Davo May 16 '17 at 13:34
0
$\begingroup$

The Wolfram Alpha "Data Download" feature supports STL format, but is only enabled with a Pro Account.

When I click your link to Wolfram, I see the visualization of your equations at the bottom of the page; when I hover over the image, several buttons show below it. One of them is "Data", with a download icon. This gives a number of download options. The File Format drop down includes "STL".

$\endgroup$
4
  • $\begingroup$ I don't have my printing software with me, so I haven't verified that the STL file will be usable... $\endgroup$ – mbmcavoy May 16 '17 at 16:19
  • $\begingroup$ Is there a way to get this without a pro account? (Or could you share the STL with me?) $\endgroup$ – werdna3232 May 16 '17 at 21:27
  • $\begingroup$ I don't have an account at all. I'm not signed in, I just clicked your link. I'll see if I can add screenshots to my answer. $\endgroup$ – mbmcavoy May 16 '17 at 21:42
  • $\begingroup$ Ah - I see the actual download is disabled without having a Pro account. I will revise my answer. $\endgroup$ – mbmcavoy May 16 '17 at 21:46
0
$\begingroup$

The best free solution I could find was to graph this (in Desmos), screenshot it, and convert it into a SVG, convert that into an OpenSCAD file, and then use that to make the STL. A similar process is shown on someone's blog here.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.