S in Bubble Letters

Outline version to colour or trace

How to draw a bubble capital S

1. 1Draw a light S skeleton as a single line: start at the upper right, curve left over the top, slide diagonally through the middle and curve right under the bottom.
2. 2Make the top curve slightly smaller than the bottom curve, so the S sits steady and does not lean forward.
3. 3Inflate the line with a smooth outline on one side only, following the S from end to end at a constant pencil-width distance.
4. 4Do the same on the other side, rounding both ends of the S into half-circles that point inward a little.
5. 5Erase the skeleton, then check the middle diagonal. It must be as thick as the curves, and the two inner gaps should be open and the same size.

Tip: Draw the S at slightly more than your guideline height. Its curves are round, and round shapes look smaller than flat letters, so a small overshoot makes it sit level in a word.

How to draw a bubble lowercase s

1. 1Draw x-height and baseline guides and sketch a thin S shape between them. Lowercase s is the same shape as capital S but compact and a little wider in proportion.
2. 2Make the upper bowl slightly narrower than the lower bowl so the letter feels balanced.
3. 3Inflate the S along one side, then the other, keeping the distance constant through the diagonal spine.
4. 4Round the two ends into small half-circles. They should point toward the letter's centre, not stick out like hooks.
5. 5Erase the guide line and soften any bump in the outline by redrawing that stretch in one steady pass.

Tip: Lowercase s shrinks fast in small sizes, so make its counters bigger than they look on a capital. Tiny gaps close up when you add colour or ink.

What makes S awkward or easy

S has no stem or crossbar to anchor your hand, so the entire shape depends on the spine, the diagonal middle. On a bubble version the spine tends to thin out because the two curves pull the outline inward, creating a waist. The two internal gaps, one opening to the right at the top and one to the left at the bottom, must also be equal. Uneven gaps make the S look twisted. Because S is mostly curves, its outline is also the most visible letter in a word for wobble.

Variations

A slanted S gives a graffiti flavour and gets a lot of energy from a long drop shadow. A very fat S with tiny gaps looks like a cartoon snake, while a narrow tall S feels elegant. You can draw the letter as a ribbon with a visible twist in the middle for a decorative version. A kid-friendly S can be built from two stacked half-circles. For 3D, shade the underside of both curves, because that is where light would fall away.

Common mistakes with bubble S

• The middle diagonal is thinner than the top and bottom curves.

  Draw both edges of the diagonal as parallel lines before you round the ends, and widen it until it matches the curves.

• The top and bottom curves are the same size, so the S looks tilted or tipsy.

  Make the upper bowl a little smaller, which gives the letter a stable base.

• The two inner gaps are different sizes.

  Place a small dot in each gap as a guide and adjust until the dots sit at the same distance from the outline.

• The ends curl inward so far they close the gaps.

  Stop each end at about two o'clock and eight o'clock on the curve, leaving a visible opening for each counter.

Ideas for bubble S

S is a flexible letter for names such as Sara, Sam and Sofia, and for words like 'Sale', 'Summer' and 'Squad'. A large bubble S works well as a single-letter logo, a school spirit symbol or the first letter on a sticker. A pair of S shapes facing each other makes a good decorative border.

Bubble S: questions