Wilton 21 — 1 piping techniques

By The Sugar Bench · Newest card released 23 August 2026

What this number pipes

The border that has finished the bottom edge of cakes for a century, piped in one rhythm.

Wilton 21 Medium Beginner Borders

The same number pipes the same shape in the Wilton and PME systems; the opening differs by under 0.3 mm.
Wilton 21 is a common number, so replacing it singly is cheaper than buying a set - most sets are half numbers you will not use.
A narrow opening, so rinse it the moment it comes off the coupler; dried icing deforms the blade.
Tighten the coupler ring to finger pressure only. Forcing it crushes a thin blade out of shape.
Keep two of the same number: one lives with the deep colours (wine, ink), which stain metal permanently.

The twelve-second rosette that anchors cupcake bouquets, drip cakes and cookie trays.

Wilton 1M Medium Beginner

One squeeze, six broad teeth, and a stripe of pale pink that reads as a rose.

Wilton 2D Medium Beginner

A full open rose built from seven crescent petals, no flower nail needed.

Wilton 124 Stiff Intermediate