Stir from the bottom
Reincorporate settled pigment gently. Avoid whipping air into the paint.
01 / THE MATERIAL
Paint that wants to move
Lettering enamel is a high-pigment, oil-based paint formulated for sign work. Its job is different from house paint or artist’s oil: it must load into a lettering quill, travel in a long stroke, level behind the brush, and leave an opaque, glossy mark with a sharp edge.
That combination—coverage, flow, leveling, and working time—is why sign painters prize it for storefronts, panels, vehicles, glass, wood, and prepared metal.
EnamelStart with black, white, red, yellow, and blue.
QuillsA few sizes of lettering brushes with good spring.
PaletteA smooth surface for shaping and loading the brush.
ReducerUse the reducer specified for the enamel system.
CleanerKeep separate rinse containers and brush conditioner.
Mahl stickSteadies the hand and keeps it off wet paint.
02 / SURFACE PREP
Clean, dry, compatible
A beautiful stroke cannot rescue poor adhesion. Remove dust, wax, grease, chalk, and moisture; then use the primer or barrier coat recommended for the exact substrate and paint system.
Pick a surface
Use this as a starting check—not a substitute for the enamel label or the substrate manufacturer’s instructions.
Sealed wood
Sand smooth, remove dust, and seal or prime to stop the grain from drinking in the enamel. Test for adhesion before committing to the sign face.
03 / BRUSHWORK
Load. Palette. Pull.
The goal is a fully charged brush with a crisp working shape. Practice straight pulls first; speed comes after consistency.
Decant a working amount
Keep the main can clean and open only as long as needed.
Charge the belly
Work paint through the hairs, then palette both sides into a flat, even chisel.
Set, pull, finish
Plant the edge, pull with your arm, and ease pressure as the stroke resolves.
04 / THE FEEL
Let pressure set the width
A lettering quill is a reservoir and a steering system. Keep the handle low enough for the hair to carry paint, while the working edge stays organized.
- Too dry: the stroke skips, splits, or shows brush marks.
- Too wet: the edge rounds over, drips, or floods a corner.
- Just right: the stroke covers, levels, and releases cleanly.
05 / DRYING WINDOW
Give the film time
2–5 hrDry to touch
8–12 hrDry to handle
12–16 hrRecoat
Published times for 1 Shot Lettering Enamel under favorable conditions. Temperature, film thickness, reducer, airflow, and humidity change the result. Check the label and test the film before handling.
06 / TROUBLESHOOTING
Read what the stroke tells you
Dragging or skipping
Reload and palette the brush. If the product allows reduction, add only the specified reducer in small increments.
Rounded, fuzzy edges
Too much paint, too much reducer, or a poorly shaped brush. Palette back to a crisp edge.
Wrinkling or lifting
Stop. The coat may be too heavy, recoated too soon, or incompatible with the surface below. Let it cure and test the full system.
Slow or incomplete drying
Check temperature, reducer choice, coat thickness, and contamination. Some enamels will not cure properly in cold conditions.
Fish-eyes
Suspect silicone, wax, oil, or other contamination. Cleaning the surface after a failure rarely fixes the wet coat; prepare a fresh test area.
Visible brush marks
Work a manageable section, keep a wet edge, and do not overwork enamel once it starts to set.
!
Solvent-borne paint deserves professional handling
Read the current label and safety data sheet before use. Provide appropriate ventilation, keep away from ignition sources, wear the specified protective equipment, and dispose of paint and solvent waste under local rules. Never assume one brand’s reducer, hardener, or cleaner is safe or compatible with another.
07 / FROM THE OLD MANUALS
Lessons that survived the century
James Callingham’s 1890 trade manual treats sign writing as drawing first and painting second. Its strongest advice still belongs at the bench.
A
Practice at working angle
Train on a board set nearly upright—not flat on a table—because the posture should resemble the surface you will actually letter.
Callingham, pp. 35–36B
Drill the simple marks
Repeat verticals, horizontals, diagonals, and curves freehand. These few motions are the parts from which every alphabet is assembled.
Callingham, ch. IIC
Use the mahl stick
When switching from chalk drills to paint, rest the working arm on a mahl stick rather than on the panel—especially around wet work.
Callingham, p. 36D
Judge the white, not the ruler
Equal measurements do not always look evenly spaced. Tighten pairs that create open wedges and judge the rhythm of the negative space.
Callingham, pp. 39–40E
Pull boldly
A long, deliberate outline is easier to correct than a nervous chain of short touches. Practice finishing each segment with fewer lifts.
Callingham, pp. 144–145F
Keep ornament subordinate
Master plain alphabets first. Decoration should share one visual logic and must never cost the sign its legibility.
Callingham, pp. 77–80Read old formulas as history. Period manuals can name pigments, solvents, and surface treatments that are obsolete or hazardous. Use their drawing and layout principles; use current paint labels and safety data sheets for materials.
08 / BENCH NOTES
Match the tool to the paint
Letterhead Sign Supply’s brush notes connect hair, shape, paint body, and working surface—the practical choices that affect a stroke before technique does.
- Soft flats favor smooth work.Their “Soft Stroke” flats are described for clean edges on glass, finished wood, metal, and plastic.
- Quills change with the surface.The shop recommends tougher grey quills for rougher surfaces and finer brown quills for smooth wood, metal, and glass.
- Water-based paint needs more body.Because water-borne paint is heavier than lacquer or enamel, the shop pairs it with mixed synthetic-and-squirrel quills that resist collapsing.
- A mahl stick is more than a rest.Use it to steady long pulls, keep your hand clear of wet lettering, and reduce strain while working across a panel.
- Store brushes with the right conditioner.Ron Percell recommends refined lard oil for oil or urethane brushes and warns against automotive oils. Clean first, follow the brush maker’s care guidance, and keep conditioners out of water-based brushes.
09 / BRUSH LIST
Brushes for lettering enamel
Choose the shape for the stroke and the hair for the surface. These are the core brush families used with solvent-borne lettering enamel, from small copy to large wall work and pinstriping.
01
Lettering quillEveryday lettering
The all-purpose choice for small and medium letters. Palette the tip into a chisel for square corners, an oval nib for rounded strokes, or a point for detail.
02
Brown quillSmooth surfaces
Fine, soft hair for finished wood, metal, and glass. It offers a little traction while carrying enough enamel for controlled letter strokes.
03
Grey quillRougher surfaces
A tougher, more durable quill for surfaces that would be hard on finer hair. Use it where a brown quill feels too delicate.
04
Lettering flatLarge copy & fills
Made for broad strokes, oversized letters, window graphics, trucks, trailers, walls, floors, and coating larger sign areas.
05
FitchSmall–medium wall work
Useful for lettering and detail on medium-to-rough walls such as brick, stucco, rock, or wood. Smaller than a cutter and easier to steer in tighter work.
06
CutterMedium–large wall work
A higher-capacity brush for oversized lettering on rough walls and mural surfaces. It covers more area without wearing out smaller quills.
07
Liner or outlinerLong edges & outlines
Long hair carries a larger paint load for outlining letters, pulling borders, and laying broader stripes around graphics.
08
Detail brushFinishing work
Use for fine corrections, small details, and finishing artwork where a full lettering quill is too large.
09
Sword, dagger, or broadlinerPinstriping
Specialized pinstriping shapes for long flowing lines, turns, scrolls, and ornamental work. Hair options include grey, brown, ox, sable, and synthetic.
Keep paint systems separate. Do not move a conditioned oil-enamel brush into water-based paint. For water-based lettering, use a dedicated synthetic or synthetic-and-natural blend with enough body to resist collapsing, then clean it according to the paint and brush maker’s directions. Brush families and surface guidance are summarized from Letterhead Sign Supply’s brush guide.
10 / OLD SIGN PAINTER STORIES
Tales from the painted street
James Callingham’s nineteenth-century manual preserved more than technique. Between its lessons are shop-floor stories about proud clients, crowded layouts, public embarrassment, and painters trying to make the job work.
London · a tavern sign
“The wolf, my lord”
A well-known artist accepted a public-house sign commission. One aristocratic patron thought the job beneath him and demanded an explanation. The painter answered with the whole economics of freelance work in four words:
“The wolf, my lord; the wolf.”
A publican’s spelling lesson
The client is always “right”
A landlord rejected the painter’s spelling of brandies. Since one bottle held “brandy,” he insisted the plural must be “brandys.” Told that everyone spelled it with -ies, he replied that everybody else being wrong was no reason he should be.
The painter’s problem was not the brush. It was the approval.
A country churchyard
When the copy outran the rail
A painter began “A virtuous woman is a crown to her husband” too large for the wooden rail. Running out of room, he reportedly substituted the five-shilling abbreviation for crown—a clever rescue that turned solemn copy into a visual joke.
Measure the line before the first stroke commits the scale.
A skittle alley wall
The spot became a hole
Another painter shortened “This is the spot for skittles” by painting a large black spot in place of the word. From down the road, the mark looked like a hole knocked through the flint wall, so passersby read the message as “This is the hole for skittles.” The wall had to be painted again.
A device that saves space still has to read at viewing distance.
These are period anecdotes retold from Callingham’s Sign Writing and Glass Embossing. Callingham himself says he could not vouch for the accuracy of the country-painter stories; their value is the trade lesson each carried forward.
REFERENCE DESK
Books, shop notes & safety
This guide explains general practice. Product directions govern the exact system in your hand.
- Sign Writing and Glass Embossing — James Callingham, 1890 scan
- A Textbook on Lettering and Sign Painting — International Correspondence Schools, 1902
- Letterhead Sign Supply — sign-painting book list
- Letterhead Sign Supply — lettering brush selection notes
- Brush-care notes by Ron Percell
- 1 Shot Lettering Enamel application, reduction, drying, and cleanup notes
- 1 Shot Lettering Enamels — range and product overview