Glueing Magnets
To permanently adhere the magnets, we suggest using Starbond's medium super glue.
Use the included fine precision micro tip to apply small drops of glue to the magnet cavities.
Carefully place the four magnets into the glue applied cavities of one half of the D20.
Allow the glue to fully set before proceeding to the second half.
Glueing Magnets Continued
Once the glue has fully set, add the second set of magnets to the permanently bonded magnets. This ensures the polarities are matching.
Apply small drops of glue to the four cavities on the second half of the D20.
Carefully fit the second halve onto the magnets so the cavities are properly lined up.
Press the two halves together and let the glue dry.
It’s easiest to assemble the die with magnets all “north up” on one half, and “south up” on the opposite half…but that does create a situation where the die could close wrong.
If you’re very patient and carefully label the polarity of your magnets, a better approach is to have one polarity facing up on the magnets near the 3, 4, 17 and 18 faces, and the opposite polarity on faces 2, 7, 14 and 19. The magnets will naturally resist improper closing when assembled this way.
Install Speaker
Once the glue has fully set on both halves, pull them apart.
Remove the sticker backing from the front of the speaker.
Orient the speaker with the half of the D20 with the oval shaped flat surface. Then, press the speaker onto the surface.
Adding Counter Weights
To balance the two halves, we suggest using two US pennies as counterweights.
Place the two pennies into the cavity, they should have a loose fit.
Install Cap
Press the cap onto the counter weight cavity. It should have a tight tolerance.
Optionally glue the pennies in place for permanently bonded counter weights.
Install Speaker Wires
Insert the two wires from the speaker into the corresponding terminals on the Feather.
Use a screwdriver with a 2.5 sized flat head to secure the speaker wires.
Connect Battery
Get the 400mAh battery. Connect the cable from the battery to the 2-pin JST connector on the Feather.
If the Feather powers on, use the slide switch to turn it off.
Secure Battery
The speaker features a second sticky side on surface of the magnet driver. Remove the protective cover by peeling it off.
Then, position the 400mAh battery and press it onto the sticky surface of the speaker.
Install Switch
Position the slide switch with the built-in holder on the half of the D20.
Insert and press the slide switch in between the walls of the built-in switch holder.
Installing Feather
Orient the Feather with the D20 so the mounting holes line up with the built-in standoffs.
Secure Feather
Insert and fasten the two M2.5 x 6mm long screws to secure the Feather to the half of the D20.
Final Check
Take a moment to inspect the components are properly secured in place.
Use the slide switch to power on the Feather before joining the two halves together.
Closing Halves
The halves can only be joined one way.
Orient the two halves so the magnets are matching.
Slowly bring the two halves together and keep your fingers away from the edges.
Page last edited March 08, 2024
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