Initial Name Signs: Sizes, Heights and Colours That Print Well
You've seen them on nursery doors and wedding tables: a big letter, usually a serif capital, with the name written across it in flowing script. It's a perfect 3D printing project. It's flat, it prints without supports, it uses a few dozen grams of filament and it looks like something you'd pay 30 euros for in a gift shop.
It's also easy to get slightly wrong. The name breaks, the colours bleed, or the AMS spends three hours swapping filament. Here's what works.
The anatomy of the sign
The sign has three parts, stacked by height:
- The initial, the big letter, which is also the base of the whole piece
- The outline, a contour around the name that cuts into the initial, so the name stands out against it
- The name, in script, on top
Optionally there's a plate behind everything, useful when the name extends beyond the letter.
Sizes that work
The default initial height is 200 mm, which fits the beds of most current printers (Bambu Lab, Prusa MK4, Ender 3 and similar). On a 180 mm bed, such as the A1 mini, go down to 170 mm.
Below about 150 mm, script names get thin. The thinnest stroke of a font like Great Vibes or Parisienne drops under 1.2 mm and starts to snap when you peel the sign off the plate. If you want a smaller sign, choose a sturdier script such as Pacifico, Lobster or Cookie, and increase the name height percentage.
The outline is what holds the name together. It defaults to 4 mm. Any thinner and loose letters, like the dot of an i, end up floating; any thicker and the sign looks clumsy.
Heights: why 6, 6.8 and 7.6 mm
The three parts sit at different heights: the initial up to 6 mm, the outline to 6.8 mm and the name to 7.6 mm. That gives each part four layers at 0.2 mm, which is enough for a dark colour to look solid over a light one.
The order matters. The initial must be lower than the outline, and the outline lower than the name. If you change the heights, the generator warns you when the order is broken, because then the sign can no longer be printed with a simple colour change.
Three ways to print it
The generator offers three printer modes. Pick the one that matches your machine:
Single extruder, colour change by height. One solid body, and you change filament twice: at 6 mm and at 6.8 mm. The generator shows both heights. The 3MF already carries both changes as markers, which PrusaSlicer picks up. If your slicer doesn't show them, add them yourself as colour changes or pauses in the preview. Bambu Studio, for example, ignores those markers in files from other programs.
Multicolour (AMS or several extruders). Each part is a separate object with its own colour, the way a multi-material model normally is. It works, but the initial, outline and name share layers, so the AMS swaps filament on many layers.
Multicolour by layers (AMS, only 2 colour changes). Same height bands as the single-extruder mode, but split into three parts, each assigned to its own AMS slot. Every layer is a single colour, so the AMS swaps exactly twice in the whole print. Less purge waste and a much shorter print. If you have an AMS, this is the one to use.
More on the general method in our guide to two-colour prints with a single nozzle.
Colour combinations
Contrast between the initial and the name matters more than the colours themselves. Some combinations that work:
- White initial, gold outline, black name
- Sage green initial, white outline, dark green name
- Pastel pink initial, white outline, rose gold name for a nursery
- Black initial, white outline, gold name for a wedding
Matte filament on the initial hides the layer lines on that big flat face. Silk or metallic filament on the name makes the script stand out.
Printing and hanging
Print flat, face up, at 0.2 mm layers with two or three walls and 15 % infill. A textured PEI plate leaves a pleasant finish on the back. Mounting strips or double-sided foam tape hold the sign on a door or wall; for a table, a small easel or stand works better than glue.
If you'd like to see examples before you start, the initial name sign page has a gallery of finished designs and printing tips.