Infinity Trammel
Assembly Instructions
Assembly Time: ~1 Hour
SAFETY TERMS AND LIABILITY
The Infinity Trammel is a science and engineering kit intended for users age 12 and older. Adult supervision is recommended during assembly and operation.
This kit contains small parts, including stainless steel ball bearings and neodymium magnets, which can pose a choking hazard and a serious ingestion risk. Keep all components away from young children. The device includes gears, moving parts, and a small DC motor. Pinch points may occur during assembly and operation. Use caution when handling mechanical components, and keep loose clothing, jewelry, and long hair secured and away from any moving parts. The kit also includes a USB-powered motor and accessories. Use only the included 5V power supply and do not modify the electrical components. By purchasing and using this kit, you acknowledge that you are responsible for ensuring safe handling and that the product is used as intended. devX LLC is not liable for injuries or damages resulting from misuse, modification, or unsupervised operation.
STEP 1 -- USB-C Install
Thread the wire from the USB-C port through the opening in the base and press the USB-C port firmly into the hole so it is flush with the front. Be careful not to break the 3D printed base when pressing the port into place.
STEP 2 -- DC Motor Install
Thread the cable from the motor through the opening in the base that is facing the USB-C hole. Slide the motor into place.
NOTE: The top of the motor should sit flush with the top of the base mount. See the troubleshooting photos at the end of these instructions for more details.
Flush
STEP 3 -- Connect USB-C Cable to Motor
Press the cable from the USB-C port into the receiving port on the motor. Note that the order of the colored wires does not matter. You don't have to connect red-to-red. Just press the white fittings together until they snap into place securely. You might want to tuck the wires into a secure position behind the motor mount so they don't get caught in the moving gears once the trammel is completed and running.
STEP 4 -- Install the Motor Gear
Find the small gear with the slightly squared-off hole in the middle. Match up the squared part of the hole with flat side of the motor shaft. Press the gear onto the motor shaft until it is flush or just past flush with the top of the motor shaft. Pay attention to the orientation (top and bottom) of the gear in the photo. This will be a tight fit and may be difficult to remove if you install it upside down.
bottom of gear
STEP 5 -- Install the Magnets
Install one magnet in each of the 12 magnet holes in the magnet mount. It is important that the magnets sit flush with the top of the mount. You may to use a blunt object (like the back of a screwdriver) to press these down all the way.
NOTE: adult supervision and assistance may be needed. Some of the magnets may be difficult to insert into the mount as they have to be a tight fit in order for the device to work.
Flush
NOT Flush
STEP 6 -- Install the Small Gear to the Planetary Arm
Use the small screw to attach the small gear to the top of the planetary arm.
​
You will likely have a little "wiggle" in the gear once the screw is fully installed. Do NOT over-tighten the screw as it could break. Just try to get close to flush with the bottom of the arm.
Top
Bottom
STEP 7 -- Install the Arm and Plug
Slide the planetary arm over the center mount on the base. Then press the plug into place until it is all the way in the hole.
NOTE: It is very important to check the alignment of the plug. Rotate it until one of the teeth is perpendicular with one of the four arms of the base. If the balls fall off when the motor is running, it is likely because the plug is misaligned. Just lift it out and turn it until it is properly aligned.
align this
with this
STEP 8 -- Install the Magnet Mount
Use the larger screw to connect the magnet mount to the planetary arm. Just like withe small gear above, screw this in until it is firm, but do not over tighten.
Top
STEP 9 -- Install the top
Slide the four tabs of of the top into the 4 arms of the base. The photo here just shows the side view so you can see all of the gears and confirm you have assembled everything correctly.
STEP 10 -- Install the Ball Bearings
Place one ball bearing above each of the magnets on the Top.
​
Connect the power cable to the USB-C and enjoy!
Troubleshooting the Motor Mount
The motor should sit flush as show in the picture here. If it sits too high, the motor shaft will catch on the planetary gear arm and cause the device to stop working.
​
Occasionally, 3D printed parts warp slightly during production. If your motor can't press all the way into the mount, have an adult use wire cutters or a utility blade/knife to cut away a little bit of the bottom-middle of the motor mount near where the wires are soldered to the terminals.
