Quadruple Portal Illusion Desk Toy by Ada Cohen

Each print profile has the screws with brims and max wall thickness to improve the success rate of the print. The screws also have inner supports that need to be pulled out before they can be attached to the gears. Some print profiles have outer brims on the smaller components in case they come off too easily. I do not recommend printing with inner brims, as they can be quite difficult to remove from the smaller components and can increase the friction, but I added it to one print profile in case you really can't get them to stick to your plate.

It is a bit complicated to assemble, but basically you attach the gears and caps to the screws, and then sandwich everything between the two large frame pieces. For detailed assembly instructions, go to: https://www.printables.com/model/427933-quadruple-portal-desk-toy

A video of the resulting product is below!

In case there is an issue with a link to the assembly instructions, they state the following:

1. Snap the gear pieces onto the bases of the screws. The pegs are differently sized, so each screw will only snap onto one gear.
2. Apply some grease to the grooves on gears, as well as the gears' teeth.
3. Place the base down on your work surface and place the gear sides of the screws into the cavity. Don't worry about lining the gears up yet.
4. Thread the nut over the outer screw. The nut should automatically slide down to the bottom. If it doesn't, check to make sure you don't have any globs inside the thread. If it's just tight, reprint it with -0.2 mm XY compensation.
5. Screw the caps onto the screws. You should be able to do this gently. If they are too tight, reprint them with -0.1 mm XY compensation (incrementing as necessary). These do not need to be tight, and the screws are fragile. At this point, the screws should be standing up, and caps 1-3 should be inside the outer cap.
6. Grease the grooves on the caps
7. Place the top onto the base, carefully lining up so that the arms go into their sockets, and so that the caps go into the cavity. Do not push all the way down. Just get to the point that the caps clear the rim of the cavity.
8. Now you need to move the screws around so that the grooves on the caps and gears line up with the rims on the base. Refer to the cover photo and/or the “Quadruple Portal Toy.assembled” 3mf file. To see which goes where.
9. Push the top down some more until it makes contact with the caps. Carefully flip the whole piece over, so that the top is on the work surface. Now you're going to move the screws around some more until their grooves snap into place with the rims on the top. Make sure that they stay lined up with the rims on the base as well.
10. Push the top down just a bit more, then rest your hand on it to keep it in place, and make sure that everything works properly when you move the nut up and down. If it seems very tight and doesn't want to turn, first make sure that the gears and caps are aligned, and then try backing the top off a little bit. Small adjustments here.
11. Did you just absolutely hate steps 7-10? I'm so sorry. We're going to do them again, now that we know everything is working. Carefully flip the toy back over and remove the top from the base.
12. Apply a small amount of CA glue to the the sides of each arm, near the tips. Don't bother putting glue on the tips of the arms, since those may not actually need to make contact with the sockets.
13. Repeat steps 7-10, adjusting until you can move the nut smoothly, but so that the screws don't dislodge. (This is why we don't use CA accelerator; we need some time to tune this).
14. Allow the CA glue to set.

Design by Jacob!!! on MakerWorld (license: BY-SA).