Rapid prototyping frame

These are pieces I like to use to quickly make a shapes from cheap 16 mm PVC tubing. They friction fit, but you can glue them too.

They are designed such that all the tubes intersect through a single point.

If you do not like the angles or diameter size, go to [onshape](https://cad.onshape.com/documents/3a6b798a31b6736918dfe2a1/v/78f86c7f51f4a1a0bba2c7a3/e/b129065baefd63d215a934db?renderMode=0&uiState=66fef5947ae5d2166130bc4a) and change the parameters. If you need more acute angles than 90 degrees, also increase the insertion length parameter of the model. You can also change the diameter parameter, I added 0.2 mm for play.

I uploaded a series of most useful angles. Keep in mind you might need to mirror parts in your slicer to get all the possible parts to make a cube.