Scanning objects with a 3D scanner is becoming more popular as scanners become more affordable. 3D scanners allow you to “scan” an object and create a three dimensional computer file (or “model”) of that object. It does this by projecting a narrow beam of light or laser onto the object. One or more sensors read where the beam strikes the object. The beam is moved incrementally across the object with the sensors continually reading the locations where the beam strikes the object. With the scanner connected to your computer and with the proper software installed, the scanner will create a .stl file. From that file you can print the object on you 3D printer. You can also transfer the file to software that will allow you to make changes to the model.

Undoubtedly, some of you are handy with mechanics and electronics. If you are, you may have considered building your own scanner. With a quick look at the internet you will find sites that offer plans for scanners that you can build inexpensively. There are other sites that offer kits with everything (or at least almost everything) that you need to build a scanner. These scanners can be great fun for someone with the skill, inclination and time to build one.

As I said, the monetary investment in a do-it-yourself (DIY) scanner can be quite small; however, the investment in time can be considerable. It’s not as big an investment of time if you buy a kit. A kit will have most of the parts you will need, and will include instructions. There may be a few extra pieces that you will need to complete the scanner. These parts may be as simple as some plastic parts that can be made on a 3D printer. If you search “3D scanner kits” on your internet browser, you will find a variety of kits in a wide range of prices. The more expensive kits include more of what will be needed to complete the scanner.

If you search the internet for “DIY 3D scanners,” you will find instructions for building a scanner from scratch. Some of these will require making parts with a 3D printer. You will need to find other parts such as a turn-table or stepper motors. If you do any electronics as a hobby you may have these things lying about. If not, then you will need to buy those pieces. What seemed to be an inexpensive project can escalate in cost quite quickly.

Once you have collected all the parts it will be time to put them all together. This is where your mechanical and electrical skills come into play. Be sure to pay close attention and take your time. Even if you are experienced in building projects, rushing the job will most often cause problems. Once the scanner is built there will be additional work that needs to be done. You will need to adjust all the pieces, calibrate the sensors and fine tune your whole setup. This can be the most time consuming and frustrating part.

Some of you will derive a great deal of satisfaction from having built a working scanner. Others may feel the time spent is not worth the money saved. Make sure it’s what you want to do before you start and that you consider more than just cost. Your time is worth something too.