1 2 3 4 5 6 7

Parametric Magnetic Driver Bit Handle, Thing #34852, by JoeyC

Parametric is a word used to describe 3D models that are provided with a script, almost inevitably in Clifford Wolf’s OpenSCAD programming language, including one or more parameters that can be easily adjusted to change the attributes of the model to suit your particular needs. This hex driver bit handle (which includes a recess for mounting a permanent magnet inside) has a dozen user-definable parameters including handle diameter, handle length, bit mounting depth, magnet recess diameter, and so forth.

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.


  1. Jason says:

    Uhh, parametric models are almost inevitably NOT going to be OpenSCAD. Basically no one uses OpenSCAD in industry. The Parasolid kernel is the most widely used, but Autodesk Inventor and Pro/E both have their own parametric model kernels as well.

    1. Sean Ragan says:

      Sorta depends on where you take your sample, doesn’t it? Go look around Thingiverse and see how many .x_t and .x_b files you find versus how many .scad.

In the Maker Shed

Seven Cool 3D Printable Tools