Handless Stir (Mechanical) V1

This model is a 3d printable mixing device inspired by a stand mixer, but adjustable for any pot or bowl. Though the basic structure is 3d printable, some parts (i.e. the electronics and any insulation rubber in the design) aren't 3D printed. The following reading will instruct you step by step on how to assemble the model.

NOTE: The material this product should be printed in should be heat resistant if you plan on using this print on hot objects. In addition, your 3D printer must be capable of printing food grade items and you must make sure to use food grade filament. 

Besides the print, you will need a hobby DC motor, wires and a switch (preferably 2.5cm length by 1 cm width), battery (power source for motor), a torsion spring (one with these specifications: food grade and heat resistant glue/adhesive, and some food grade (and heat resistant if being used with hot items) rubber for insulation. 

1. Gearbox (excluding adding the top for now)
   Easy step. Print box, glue the 2 halves of the box together, making sure that there is a full circular hole at the bottom. 

   

2. Spoom Arm (only use the pieces from this component print)
   Take the circular disc you printed along with the brick that has a circular hole going through it; observe them. The brick should have a circular nub, and the disc should have a circular hole which perfectly fits the nub. You want to glue the 2 pieces from the nub and hole. It should look like this: 

   

   
   Next, take that long rod from this "Spoon Arm" component and the circular cup with small bearing-like shapes inside; observe them. You should notice that there is a circular nub on the rod, and a circular hole on the cylinder which perfectly fits the nub. You want to glue the 2 pieces from these connections. It should look like this: 

   

Now take the torsion spring mentioned earlier and fit it through the circular hole in the brick. Orientation doesn't really matter, but the arms of the spring should be facing away from the long rod. Take the remaining 2 piece of this components print (they are the arms of the clamp itself) and attach glue them onto the arms of the spring. There should be an indent/ledge made for the spring arms to be glued inside of. Attached is an image of said ledge:

The finished clamp should look like this: 

Finally, we will this clamp piece and the rod piece and connect them. The disc should pop into the cylinder, making a rotatable joint. 

1. Motor Attachment: 
   In this component, there should be only 2 pieces. What you need to do is glue the cylinder piece to the piece with the ridges so that it looks like this: 

   

1. Assemble the body 
   After printing all of the components and following the previous steps, we can assemble the body.
   Take the "spoon arm" component and fit it through the rectangular hole in the "motor attachment" component. The ridges on both components should be touching so that sliding the "spoon arm" through the hole makes it click into a position. So far, we should have this:

   

Now take these connected components and fit the cylinder of the motor attachment through the circular hole at the bottom of the gearbox.

Next, take your motor and glue the shaft into the hole at the top of the cylinder 

Add your wires, switch, and battery source along with the motor now (soldered everything together). 

along  the circular hole with the cylinder going through it, we are going to glue on our rubber insulation.

Make sure your insulation rubs on the cylinder, so that it fits snugly. This step is to make sure that we minimise the amount of steam/liquid that can leak onto our electronics. 

Next up is the "Gearbox Arms" component. Take each arm and fit them into the rectangular holes in the box. The clamp part of the arms should be facing opposite directions from each other. Once again, we want the ridges on the hole and the arms to be facing each other and rub, making it so that we can slide and click each position into place. Everything should look something like this as of now: 

Note: The electronics and the rubber will not appear in these visual guides

Onto the final step, the top of the gearbox. Slide your switch through the hole on the top piece and glue it on the outside of the top piece. If you have dead space on the hole which the switch doesn't cover, add rubber insulation. Preferably, also add rubber insulation along the edges of the switch. Now, glue the top piece onto the gearbox. All in all, you should end up with something like this: