# S.P.U.D. (Super Potato Unskinner Device)

308

2

## Introduction: S.P.U.D. (Super Potato Unskinner Device)

I thought that since potatoes are hard to peel and that most of the potato tinker cad designs were just for the Spud wars, I thought about maker a 3D printed potato peeler. and I thought it would be funny if I added an acronym to SPUD. so I made one. Super Potato Unskinner Device.

## Supplies

You will need,

A Potato

3D printer

small knives/sharp objects. (4 at least)

Glue that is strong and fast dry (FOOD SAFE)

and... that's it!

## Step 1: The Base

Since I am doing this in my free time at school, I do not have a potato. so I looked up the average size of a potato. they are about 63.5 mm. But if you have a potato, you can measure it. So I took a cylinder and made it 63.5L x 63.5H and a 74.5L x 74.5H around it. I grouped them to get a tunnel. After that, I took a square and made it skinny. make it skinny enough to put the sharp object inside it with some space still left. that will make sure to get skin from the potato out. Next, look at picture. you want to have an angle that is close enough to the wall that it shaves off the skin, but big enough so it can cut and have the skin drop out the sides. make the hoe and repeat that until you have as many holes as desired.

## Step 2: Crank It Up Up Up! Crank It Up Up Up!

Now, we are going to make the crank. in other words, a sharp point connected to a crank handle type thing. This will be used to hold out potato so we don't cut ourselves. You can either do this yourself, or make the Tinkercad version like me. You will start by taking out a cone and making sure it is big enough to puncture your potato. then take a cylinder and make it the same size as the cone's base. next, take another cylinder and make it the same size but longer in length. This will determine how far away the handle is. The shorter it is, the closer the handle is and the less gear rotation there is. The longer it is, the farther away the handle is and the more gear rotation there is. In other words, you want it shorter. I found this on the web about using a smaller crank is better and how long it should be. The joint ranges of motion will be dependent upon the femur, tibia, and foot length, which vary (usually) in proportion to your height. So in simple terms and assuming we all have similar proportions we could use our 172.5mm cranks and 1.778m height to suggest crank lengths should be 9.7% of our height.

Now get another cylinder and make it big enough to fit in your hand. This is where you will hold the crank.

## Step 3: Piecing Together the Puzzle

Now you want to print it. BEWARE! you might want to put supports under the holes of the base so it won't collapse. But I don't know. I don't have a 3D printer to know what to do. After they are printed, glue the handle together like picture 1. after that dries or when you waiting for it to dry, then take the knives/sharp object and put it inside the holes like picture 2. DISCLAIMER! I will be showing you what to do in Tinkercad because I am in school right now and I cant show you without getting in trouble. Do not do any of this in Tinkercad. do it to the real item.

Now take a small knife and put it inside the hole so the top and bottom are touching. repeat that for all the holes. make sure the knives are pointing toward one another of it wont peel your potato. And your done! just stab you potato in the bottom with the handle and put it inside. Now rotate the handle in the opposite direction of the knives. the skin should come out of the holes. now all that's left is the top and bottom of the potato. If you really want, you can do this same exact instructable and make a hollowed out half sphere to skin the ends faster.

CAUTION! Keep out of reach of children or they could get cut. I don't know if this hand washable only or machine washable. Make sure everything you used for this project is non-toxic or you could be eating chemicals.

Participated in the
Potato Speed Challenge

8 1.4K
6 1.0K
109 5.2K
1 92 9.7K