This is how I built a cup from coconut shell when I broke my coffee cup. It was a period in history, humans were not allowed to get out of home due to pandemic, hence I was left out with no option but to build this cup to have coffee ;-)

It feels good when we have things done, on our own :-)

#DoItYourSelf

Step 1: Materials & Tools Required

Raw Materials:

Coconut - diameter not less than 9cm
Bamboo stick as Cup Handle(Optional)
Food Grade Oil

Tools:

Knife
Sand Paper or Rotary Tool with abrasive wheel
Hacksaw blade or Rotary Tool with Circular Saw
Wood Glue
Marker for guideline

PPE - For Safety:

Mask / Respirator with
Goggle
Glows

Step 2: Selection & Cleaning Fiber

Select a coconut which has a diameter not less than 9cm.

Clean the outer fiber over the coconut shell with the help of knife and sand paper.

Remove the coconut water before proceeding for the next step.

Step 3: Remove Bottom Side Projections

Use a sander to remove the bottom coned structure to create a smooth base and try to make the outer shell as smooth as possible which is going to decide the texture of the cup.

So make sure the fibers and rough structures are removed.

Step 4: Split Open the Coconut

Figure out the high of the cup and draw a guideline using the technique shown in the picture.

Use hacksaw blade or Rotary tool to split open the coconut in to two halfs.

Step 5: Remove the Fruit From Nut

Use Knife or the "traditional coconut remover tool" shown in the picture to remove the fruit from the nut.

Step 6: Sanding Inner Side of the Shell

Use a sand paper or Conical abrasive rotary bit to smooth the inner side of the shell(cup)

Step 7: Making Cup Holder

As shown in the picture, mark guidelines, use hacksaw blade/circular saw rotary bit to for the cup holder.

Step 8: Gluing Cup and Holder

Use wood adhesives to stick the base and top part to form the cup, Use sellotape to hold the part together as a temporary support till the adhesive drys up.