This page has an assortment of free G-code, CamBam, dxf, and stl files that are meant for hobby CNC machine use. Some of these files appear elsewhere on this site and have also been placed here to help keep everything organized.
I will try and update this page periodically as I gather together more files, so check back from time to time for more.
Also, check out Links to other Sites with Free Files Useful for CNC for more.
I cannot completely guarantee that the files on this page will function correctly. It is always possible that I accidentally uploaded a previous version of a file that didn’t have all the kinks worked out yet. Use them at your own discretion and remember that I will not take responsibility for any damage to one’s self, to others, or to one’s property. To put it simply, you can’t sue me if something goes wrong. : )
Because of the wide range of different CNC machines, it is hard to create G-code that will fit all of them. This is probably the reason why it is so hard to find it on the web. To fill the gap, here are some simple G-code files so that the CNC newbie might have something to try out his or her machine with.
These files were all tested to make sure they worked correctly, but I can’t guarantee that I didn’t leave something out accidentally. I don’t know the limits of your machine, so be careful and practice cutting air first.
Use a router bit with a fairly small diameter for these files. (1/8″ or smaller for example.) These G-code files are set up so that the router bit will just barely graze the surface of what’s being cut. If your machine isn’t quite level, the depth of the cut may need to be adjusted to compensate. This cannot be done with the G-code files (at least not easily), but it can be done with the CamBam files below.
Click the image to download the G-code file.
CamBam files have the advantage that you can edit them before generating the G-code so that it will work better with your particular machine. Make sure you double check the settings I used because what might work perfectly fine on my CNC machine could cause problems on yours.
In case you didn’t know, CamBam is free if you only want to do 2.5D. It can be found here.
Note: When you open some of these files in CamBam you may have to click and drag over the screen to make the image visible. I’m not sure why this is and would fix it if I knew how.
Click the image to download the CamBam file.
Use a router bit with a fairly small diameter for these faces. (1/8″ for example.)
Here is an assortment of gears. The tutorial for making them can be found on the page How to Make Gears with a CNC Machine. They should be all set for turning into G-code, but double check the settings of the 2.5D profiles to make sure they won’t cause problems for your machine.
I personally haven’t had the chance to cut some of these gears out, so be careful and practice cutting air first.
I already put a hole in the center of each of the gears, but if you want to delete it and put one of a different size, you can do it with CAMBAM.
The gears below are meant to be cut with a 1/8″ router bit from MDF 3/4″ thick. The gear on the left has a pitch radius of 1.5″ the gear in the middle has a pitch radius of 3″, and the gear on the right has a pitch radius of 6″. Please note that the pitch radius is actually smaller than the total radius of the gear, so the gears might end up bigger than you expected them to be. These three gears should all mesh with one another if need be.
This is the gear made in the tutorial How to Make Gears with a CNC Machine.
This is a spare gear file that I had laying around on my computer. It is set up to be cut out with a 1/4″ diameter router bit, but that can be changed in CamBam of course. The gear is about 8″ in diameter.
Here is a worm gear that can be cut out with a CNC. The full page explaining exactly how to put it together is at this link How to Make a Single Turn Worm Gear with a CNC.
Here is a gimbal design that can be cut out with a CNC. The full page explaining how it is put together is at this link Gimbal Made with CNC
CNC Vacuum Attachment
Here is design that can be used for attaching a vacuum hose to your CNC machine. The link that shows you how to put it together is DIY Vacuum Attachment for CNC
Click the image to download the dxf file.
I am a “Genious”
Just to avoid any embarrassment on your part, that isn’t how you actually spell “genious.” Although, it probably would have been a lot funnier if I hadn’t told you that.
Note: Click the image to download the stl file.
Here is a stl file of a parabola. More info on it and details for designing your own can be found on the How to Make a Parabola with a CNC page.
(Right Click, Save As)