3D printed manual lathe.
The idea behind building 3D printed machines is a simple concept. It provides the maker the ability to make a usable machine quickly and inexpensively from common and readily available parts, Printing the main structural components, and assembling everything into a functioning machine.
This concept also allows the maker to build the machine and its capacities to make use of materials that are desired to be worked. This lathe is easily scaled in length to accommodate longer stock if desired by simple using longer guide rails and a longer leadscrew, while everything else remains the same. Being inexpensive, the machines can be duplicated and a user can make several, each for specific purposes if desired.
I decided to go back to basics and make a lathe version that was as simple and basic as possible. While all of my machines thus far have used joystick or mouse to control, this one is just simply handwheel cranked.
I used the same brushless DC motor as the others, but shrank the case down a bit and redesigned the axis for handwheel motion as shown. I also made a new spindle and motor that uses a 775 standard DC motor that is even more inexpensive and easy to source.
I took pictures of the main assemblies before assembling for clarity.
The nice thing about these designs is that they can be made longer by increasing the length of the leadscrews and guide rails. I made this one nice and compact for smaller work.
With some different adapters this can handle wood up to 2 inches square.
This as well as all my other machines was printed in ABS.
Note the very low metal content-a few pieces of threaded rod and some nuts. The center on the tailstock is a short brass rod with a ground conical tip.
Nice super simple design and operation. My growing collection of 3D printed machines can be found on my profile page.