Choose POSCA PC-3M paint markers for glass for fine outlines, PC-5M for medium-sized motifs, PC-1M for tiny details and PC-17K for broad panel work. Match the tip to the marks you want to make, then choose your colours.
For a lasting finish, follow our guide to sealing POSCA on glass.
- POSCA PC-3M paint markers for glass handle fine outlines and detailed patterns.
- POSCA PC-5M creates medium-sized motifs; PC-1M adds tiny lettering and accents.
- POSCA PC-17K has a 15mm rectangular tip for broad strokes on larger glass panels.
- Choose your tip before your colour set; plan the finish separately from the drawing.
Why tip size matters on glass
Glass exposes overlaps and uneven edges, and its transparent background becomes part of your design. A broad stroke that looks clear on a flat panel can crowd the same pattern on a small curved jar.
Start with the smallest meaningful mark: a leaf vein, handwritten name or narrow border. That tells you more about the tip you need than the total size of the object. You can combine a finer marker for outlines with a wider one for filled shapes rather than forcing one tip to do everything.
What to compare before choosing
- Line width: Match the tip to the narrowest line in your sketch.
- Stroke shape: Bullet tips make rounded outlines and dots; a rectangular tip creates wider bands and structured edges.
- Working space: Allow for curves and narrow gaps, not just the height of the glass.
- Viewing distance: Small lettering needs close viewing; a window message needs larger, clearer strokes.
- Palette: Pick colours for the design rather than choosing a large bundle automatically.
Paint markers for glass at a glance
These picks are organised by drawing job, not ranked against one another.
| Marker | Suited to | Tip specification | Main limitation |
|---|---|---|---|
| POSCA PC-3M | Fine outlines and patterns | 0.9–1.3mm bullet tip | Large fills need repeated strokes |
| POSCA PC-5M | Medium motifs and general drawing | 1.8–2.5mm bullet tip | Too broad for closely packed miniature detail |
| POSCA PC-1M | Tiny lettering and accents | 0.7–1mm bullet tip | Slow coverage across large shapes |
| POSCA PC-17K | Broad strokes on larger panels | 15mm rectangular tip | Too wide for intricate work on small objects |
1. POSCA PC-3M: fine outlines and patterns
POSCA PC-3M is the starting choice for line-led glass art. Its fine bullet tip handles botanical outlines, repeating borders and lettering with space between strokes. The bundle contains 45 colours, including pastel, metallic and glitter shades.
For a floral jar design, draw the main stems and leaf edges first. Add veins and smaller accents once the earlier marks have dried, leaving gaps between shapes so the glass remains visible.
Choose PC-3M when outlines carry the design, rather than large blocks of colour.
2. POSCA PC-5M: medium-sized motifs
POSCA PC-5M creates visible rounded marks for simple flowers, dots, geometric shapes and larger lettering. The 20-colour gift tin combines classic colours in one medium-tip set; the tin also keeps the markers together between projects.
Plan a repeating pattern before filling it with colour. Place the main shapes far enough apart that their edges do not merge, especially where the design wraps around a jar or vase.
If you are adding a name to the pattern, sketch the letters at their final size first. The medium stroke needs more space than an extra-fine one, so shorten the wording or increase the lettering area rather than squeezing it in.
Choose PC-5M when clear shapes and medium-width lines do most of the work.
3. POSCA PC-1M: tiny lettering and accents
POSCA PC-1M has an extra-fine bullet tip for miniature marks and closely spaced detail. Its 29-colour bundle includes classic, pastel and metallic colours in the same tip format.
Use PC-1M for small initials, fine additions around larger motifs or a narrow decorative border. Keep lettering simple: generous spaces between letters help a small name remain readable through the glass.
Decide where the finished piece will be viewed. A delicate accent rewards close inspection, but it should not carry the main message of a panel seen from across a room. Draw that larger structure first, then use the extra-fine marker for the finishing details.
Choose PC-1M for the detail stage, not for broad coverage.
4. POSCA PC-17K: broad glass-panel strokes
POSCA PC-17K has a 15mm rectangular tip with bevelled edges. Its flat face creates a wide band; the corner gives you a narrower edge. The bundle contains 10 colours.
Choose a larger panel for graphic shapes and broad lettering. Map the outer edges on paper, then judge the spacing through the glass before drawing. A wide stroke needs a generous gap around neighbouring elements.
Keep intricate outlines for a smaller tip rather than fitting the rectangular nib into narrow spaces.
Choose PC-17K when the broad stroke itself is part of the design.
Choose colours after the tip
The sets below cover the four drawing roles in this guide.
Choose a limited palette for a repeating pattern, or a wider selection for several different designs. If you already have colours you like, adding a different tip can be more useful than buying another large set in the same size.
Plan the drawing before you start
Draw the design at its intended size on paper. For flat glass, place the sketch behind the surface to check scale; for a curved object, simplify crowded shapes as they wrap around it.
Use clean, dry glass and practise on a separate test piece. Build the artwork in stages—main structure, filled shapes, then accents—letting each layer dry before adding another. Avoid repeatedly scrubbing the same mark.
Hold the piece against both light and dark backgrounds. Transparent glass changes how you see the colours, so leave enough contrast and clear space around the important elements.
This article covers marker selection rather than repeating the preparation and finishing tutorial. The existing decorating guide below takes you through that workflow.
FAQ
Which paint markers for glass should I use for detailed patterns?
Choose POSCA PC-3M for fine outlines and patterned glass art. Its 0.9–1.3mm bullet tip handles smaller motifs without the broad stroke of PC-5M.
Should I choose POSCA PC-3M or PC-5M?
Choose PC-3M for fine lines and PC-5M for medium-sized shapes. Match the tip to the smallest meaningful mark in your sketch.
Which POSCA marker works for tiny lettering?
POSCA PC-1M has a 0.7–1mm extra-fine bullet tip for tiny lettering and accents. Leave space between letters so the wording remains readable.
Which marker should I use for a large glass panel?
POSCA PC-17K creates broad marks with its 15mm rectangular tip. Pair it with a finer tip when the design also contains small outlines.
Do I need a large colour bundle for my first project?
A simple project does not need a large bundle. Choose the tip first, then select the colours used in your design.
Should I start on flat or curved glass?
Flat glass lets you place a paper sketch behind the surface as a drawing reference. On curved glass, adapt the spacing as the pattern wraps around the object.
One last thing
Choose the intended viewing side before drawing. Glass reveals your layer order: an accent visible from the front can be hidden behind another colour from the reverse. Inspect both sides before adding the final details.
