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Any ideas? I'm really trying to make my own 3D components, I'v read something about solidworks but i havn't seen any tutorial about this topic until now...

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    \$\begingroup\$ Use a MOSFET with an SMPS and a Colpitz Oscillator. Oh wait.. this isn't an EE question.... \$\endgroup\$ – Trevor_G Feb 15 '18 at 18:25
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    \$\begingroup\$ I'm voting to close this question as off-topic because it has nothing to do with EE. \$\endgroup\$ – Trevor_G Feb 15 '18 at 18:25
  • \$\begingroup\$ Library Expert Lite is free, and will not only help with foot prints bus can export .step files of the component. \$\endgroup\$ – Tyler Feb 15 '18 at 19:05
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SolidWorks is a 3D parametric modeling package. It costs a few thousand dollars (currently about $4K USD plus options plus annual subscription) and there are plenty of courses you can take, books you can buy and YouTube videos. Despite being quite user-friendly there is a significant learning curve.

There are also free programs out there and ones that have student versions or other accommodations for non-commercial word, but SolidWorks is a fairly solidly-placed industry standard for lower end PC-based modeling.

Most 3D CAD programs will allow you to export or save as a .STEP file format such as AP214, which EDA programs such as Altium can import.

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    \$\begingroup\$ I will confirm the steep learning curve, even with good built in tutorials. \$\endgroup\$ – StainlessSteelRat Feb 15 '18 at 19:14
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Autocad Fusion 360 is a widely used 3D design program. There is a free version, a large support community, and tons of tutorials available. It can output in multiple formats.

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Download the STEP models from the manufacturers. A vast majority of them provide STEP models for free (sometimes they require registration, but that's no big deal).

If that fails, check sites like http://3dcontentcentral.com/ . They are a community of engineers who develop 3D models of parts, electronic components included.

Between these two options you'll cover about 95% of your components. Beyond that SolidWorks is a great tool (or cheaper/free tools like SolidEdge) to design 3D models that can be saved in STEP formats and added to your design.

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