How to make a bowl.

Things you will need:

Aluminium Sheet

Radius gauge

Circle template

Hammer

Sand bag

English wheel

Aviation snips

Hand lever shears

Marker

Sand paper (optional)

Polisher (optional)

Instructions:

STEP 1. With the circle templates, mark the 4 various sized circles on the aluminium sheet. Each circle should fit within the larger circle perfectly.

STEP 2. Cut out the metal sheet following the largest circle using either a hand lever shear or another cutting device. Tips: it is easier to cut the metal when the edges are cut out roughly first. Also, take your time to cut accurately along the marked line as it will improve the end result of the bowl.

STEP 3. Using the sand bag as a base, hammer the metal sheet on an angle along the outer most circle. The aim is to flick the metal up to create a curve.

STEP 4. Carry on hitting along the lines of the inner circles. Use consistent strength all throughout the process. Inconsistency will lead to a greater variation of dent sizes that will later need to be smoothed out.

STEP 5. Run the radius gauge along the curvature of the bowl of your desired choice. If the curvature of the bowl approximately fits the radius gauge, it is time to use the English wheel.

STEP 6. The English wheel is used to smooth out the bumps made on the material.

Choose the correct wheel size that most appropriately fits the your chosen curve.

STEP 7. Slide your bowl in and out through the gaps of the wheels with an evenly applied pressure.

Continuously check the radius of the bowl with the gauge to make sure the curve is being formed correctly.

Move the bowl in a zigzag motion across the surface, in all directions, smoothing out the bumps and creating your desired curve.

Repeat STEPS 7 until you are satisfied with the results.

Results: