How it works
A square bubble letter is a block capital with its outside corners rounded and its inside corners left sharp. Type a word to get it in 6 boxy fonts, opening on Rubik Mono One. One slider sets how round the corners are.
Read the full guide
How round the corners get
The Bubble look draws its outline with round joins, so every outside corner takes a radius equal to the outline's reach: 0.034 em with Strength of the look at 0, 0.085 em at 50 and 0.136 em at 100. Holes and inside corners stay square. The page opens at 20: 0.054 em, about 8% of the letter height.
Why bold bubble letters lose their holes
The same outline grows into every hole, 0.085 em a side at 50. Rubik Mono One has strokes 0.27 em wide and small holes: only D, O and Q stay open, as dots, and A, B, P and R turn into dark slits. Orbitron's strokes are 0.14 em, so six of its seven holed capitals keep a square window. Only B closes.
Tips
- Copy Orbitron onto squared paper: O is a 5 by 5 box with a 3 by 3 window, its stroke a fifth of its height.
- Rubik Mono One gives every letter 0.85 em of room, so Top to bottom stacks evenly. It and Bungee draw small letters as capitals.
- Touching letters merge into one blob. In Rubik Mono One two Ms meet just past 50 on the slider, two Hs near 80.
Questions and answers
How do you draw square bubble letters by hand?
Draw block capitals 5 squares tall on squared paper, with strokes 1 square wide. Round each outside corner with a curve a little over half a square in radius. Leave the inside corners and the windows square, then ink the edge.
Which font makes the boldest bubble letters?
Rubik Mono One, with strokes 0.27 em wide, 39% of the letter height. Bungee and Dela Gothic One follow at 0.23 em, Lilita One at 0.20, Russo One at 0.18 and Orbitron at 0.14. The Font list runs in that order.
How do I print square bubble letters to colour in?
Pick Colour-in outline under Colours and keep the Bubble look: white letters, a black edge, rounded corners. Leave Print as an outline (saves ink) unticked: it swaps in the thin Hollow line, which follows the font's own sharp corners.