No Insertion Necessary if You Employ Self-Drilling Devices
In the world of 3D printing, assemblies can often be a time-consuming process. However, a simple and cost-effective solution has emerged: self-tapping screws. These screws, with their wide tapering pitch, are designed to cut their own thread into soft materials, making them a popular choice in woodworking and aluminum sheet applications.
Self-tappers are not a new concept, but their use in 3D printing is less frequently discussed. While specific users may not be explicitly mentioned in search results, manufacturers like KENENG customize self-tapping screws for various applications, including 3D printing needs.
The author, who has been using self-tappers for years in their 3D printing work, finds this technique to be a valuable time saver. Compared to using heat-set inserts, self-tappers offer a simpler approach. They do not require heat-setting, which can be a complex and time-consuming process.
Designing a 3D print for a self-tapping connection involves creating a suitable hole for the screw thread to pass through on the upper side, and a smaller hole for the thread to bite into on the lower side. A simple example for a 3mm self-tapper in OpenSCAD is provided.
The assembly of self-tapped 3D prints is straightforward. Align both holes and screw the self-tapping screw into them. This process is efficient and reliable, making a coupling with 3D prints possible.
It's important to note that while self-tappers can be a suitable alternative to heat-set inserts, they are not always necessary. M3 bolts, high-precision machined parallel thread screws, are often used with heat-set inserts for mounting electronic devices like Raspberry Pi LCD screens.
By sharing this technique, the author aims to provide a useful tool in the reader's 3D printing work. So, the next time you're faced with a 3D printing assembly, consider giving self-tapping screws a try. They might just become your new go-to for quick and reliable connections.
