A longer-range synthetic rigger/liner for very fine lines and controlled detail.
Rosemary’s Series 315 is the broader synthetic rigger/liner family that the company points to as the larger-size companion to Series 230. The brand’s own description frames it as Golden Synthetic, with strong snap, spring, and retention, and as a vegan-friendly brush suited to miniature painting and fine line work. In practice, this series is likely the more flexible, size-range version of the 230 concept, intended when you need the same crisp line control but with more size options and a touch more paint capacity. It belongs in the specialist-detail bracket rather than general-purpose painting. Compared with sable riggers at the same price level, expect a slightly more uniform synthetic feel, a cleaner spring back, and easier maintenance, with somewhat less paint-holding volume. Because it is a rigger/liner shape, the series is particularly useful when a painter needs long, continuous lines without the brush losing its point too quickly.
What makes this brush special
The feel is controlled, linear, and responsive. The fibres are built to track along a surface without collapsing, so the brush keeps moving in a straight, narrow path. Synthetic riggers usually feel a little quicker and more “snappy” than natural hair, and that helps when painting trim, veins, or outlines. Paint release tends to be even rather than luxurious, which is useful for work that needs consistency more than maximum load.
Medium compatibility
Watercolour
Smooth flow for washes, controlled lines and fine points.
Ink
Good for fluid inks; clean promptly after use.
Acrylic
Best with properly thinned acrylics, especially for detail and glazing.
Great for
Continuous fine lines on miniatures and scale models.
Freehand outlines, pinstriping, and delicate edge accents.
Watercolour line work where a crisp, repeatable stroke matters.
Technique & use
Lining
Detail Work
Less ideal for
Broad blending or soft feathering, since the shape is built for linear control.
Thick acrylics or rough texture paint, which can deform the tip.
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Units/
Size
Tuft Length
Belly Diameter
Price
Stock
10/0
7.6 mm
0.9 mm
$6.55
In Stock
2/0
10.2 mm
1.2 mm
$6.55
In Stock
0
12.1 mm
1.3 mm
$6.88
In Stock
1
14.2 mm
1.4 mm
$6.88
In Stock
2
15.1 mm
1.6 mm
$7.36
In Stock
4
18.2 mm
1.7 mm
$8.47
Sold Out
Brush sizes are not standardised across brands — a Size 1 from one maker may differ from another. These brushes are handcrafted, so individual dimensions may vary by 1–2 mm.
How we measure a brushA visual guide to the measurements shown in the size chart above.
These are the same measurements shown in the size chart above. Brush sizes are not standardised across brands, so use these dimensions when comparing brushes within a series or between manufacturers.
Tuft Length
The visible length of the brush hairs, measured from the ferrule to the tip.
Belly Diameter
The widest point of the brush head. On round brushes, this is the widest part of the belly.
Total Length
The full measurement from the tip of the brush to the end of the handle.
How to care for your brush
Clean with lukewarm water and a gentle soap after each session, working the cleaner through the fibres without bending the tip sideways. Do not leave it soaking, because the long fine fibres are easiest to damage through neglect rather than use. Reshape carefully and store it where the point will not be crushed in a jar or box. As a synthetic brush, it is relatively easy to maintain, but it still benefits from disciplined cleaning to preserve the line-sharp tip.