Watermelon Slicer




This is a guide showing you how to make a homemade watermelon slicer from common items you might find in your garage.

You will have to cut it a little beforehand, but it will make those final few cuts a lot faster (and more fun).

Step 1: Materials

To make your watermelon slicer, you will need:

4 Feet of PVC pipe (I used 1 1/4 inch, but other thicknesses may work as well)
4 Right angle elbow pieces
Roughly 8 Feet of thin metal wire
A pair of needle nose pliers
A power drill
A hacksaw

Step 2: Cut the Pipe

First you will have to cut the pipe into appropriate lengths.
I would suggest 1ft lengths.
On my prototype I used two 1ft lengths and two 1 1/2ft lengths.
I found that this was not necessary, because only 1ft of the 1 1/2ft length was used.

Don't forget to sand down the ends of the pipe so that it will fit into the connector properly.

Step 3: Attach the Sections

Now attach the four pipe sections (using the connectors) to form a square shape.
This will be the frame for your watermelon slicer.

Step 4: Drill the Holes

Now you will use the power drill to make holes for the wire to thread through.

Drill a hole through the pipe at 1 inch intervals on two opposite sides of the frame. I would suggest arranging it so that you are threading the wire through a thin hole, and making a larger hole for it to thread out of.

Step 5: Thread the Wire

Tie off one end of the wire at one of the holes on the end.
Thread it back and forth, pulling it as tight as you can (I used a pair of pliers to get a better grip). This will leave you with series of parallel wires (it will look something like a harp). Tie off the wire at the other end.

Step 6: Completion

Because of the height of the PVC pipe, I had to place the watermelon on a cinder block to cut all the way through it. If the wire is not tight enough, it may not cut all the way through the watermelon.

Note that I had already chopped the watermelon in half before attempting to cut it with the slicer.



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      10 Discussions


      9 years ago on Step 6

      Cool, I'm surprised there aren't a lot of replies on this.


      10 years ago on Introduction

      Mmmm, guitar strings are a really good idea! Too bad I didn't do this at home, or I would have been looking at the ones on my table the whole time I making it...

      1 reply

      9 years ago on Introduction

      dam i was gonna make something like this for apples and pears to cut em we used to throw them at our spokes on bikes used to cut them perfectly in half


      10 years ago on Introduction

      Garroting your watermellon! :) If you want thinner wire, check out guitar strings.


      10 years ago on Introduction

      Yeah, the prototype was a bit of a rush job. Smaller wire would be good, but it is fairly expensive to get good quality thin wire. Anything too cheap breaks cutting through the skin.


      10 years ago on Introduction

      Hmmm... here's a though... some kind of platform, somewhat like a cutting board that's smaller than the frame, and a couple inches high. That should eliminate the need to carry the melons to the garage. ;) If you really want to get complicated, maybe even make some kind of hinge system so it always comes down straight. But that's going a bit far with it, methinks.


      10 years ago on Introduction

      If the wire was more taught and smaller gauge it would preform a lot better.


      10 years ago on Introduction

      This is awesome, sort of like a giant size of those strawberry and egg slicers you use in the kitchen. I would suggest tying off each individual strand so that you can get each one as taut as possible. Is there a possibility of cutting out triangle-shaped wedges in the side of the PVC so the wire would be closer to the bottom? Or would that be too unstable?