Handi Quilter Flipped Curve Ruler

The Handi Quilter Flipped Curve Ruler is a precision longarm quilting ruler designed to help quilters create flowing, undulating wave designs with consistent, professional results. Measuring 10" x 6" and cut from high-quality 1/4"-inch thick acrylic, this ruler features two graceful curves that guide your machine smoothly through long, soft arcs — a shape that would be nearly impossible to achieve freehand with the same repeatability. It is compatible with any brand of longarm quilting machine and is built to last with etched (not printed) markings in white for permanent, easy-to-read accuracy.

Key Features

• Made from high-quality 1/4"-inch thick acrylic chosen for its strength, clarity, and long-term durability.
• Two undulating wave edges create long, soft curves ideal for filling quilt backgrounds and borders.
• Ruler markings are precision-etched — not printed — in white for permanent, fade-resistant accuracy.
• Measures 10" x 6", providing a generous working surface for smooth, flowing curve work.
• Compatible with any brand of longarm quilting machine, not just Handi Quilter systems.
• Designed for use with the HQ Ruler Base and HQ Sure Foot for stable, controlled stitching.
• Formerly known as the Handi Quilter Wave B ruler, now updated and rebranded as the Flipped Curve.
• Etched edges provide a precise, consistent guide surface that will not wear away with regular use.

Specifications

The Handi Quilter Flipped Curve Ruler is an excellent choice for longarm quilters at any skill level who want to add graceful, repeatable wave designs to their quilts without the inconsistency of freehand work. Handi Quilter backs this machine with a 10-year casting warranty, 5-year mechanical warranty, and 5-year electrical warranty, plus free parts and labor for the first 90 days. OSP Machines is an authorized Handi Quilter dealer and provides free support for the life of your machine.

Compatible Machines

• Any brand of longarm quilting machine (when used with an appropriate ruler base and ruler foot)
• Handi Quilter longarm machines (with HQ Ruler Base and HQ Sure Foot)

Frequently Asked Questions

What is the difference between the Handi Quilter Flipped Curve Ruler and the Wave B ruler?

The Flipped Curve Ruler is the updated version of the Handi Quilter Wave B ruler. The design is the same — two undulating wave edges that produce long, soft curves — but the product has been rebranded under its current name.

Can I use the Flipped Curve Ruler with my non-Handi Quilter longarm machine?

Yes. The Flipped Curve Ruler is compatible with any brand of longarm quilting machine. You will need an appropriate ruler base and ruler foot for your specific machine to use it safely and effectively.

What accessories do I need to use this ruler?

To use the Flipped Curve Ruler, you will need a ruler base (such as the HQ Ruler Base) to stabilize the ruler on your machine's throat plate, and a ruler foot (such as the HQ Sure Foot) that allows the foot to ride along the ruler's edge. Both are sold separately.

What kind of designs can I create with the Flipped Curve Ruler?

The two wave edges of this ruler are designed to produce long, flowing, undulating curves — ideal for filling quilt backgrounds, borders, sashing, and other areas where you want a soft, rhythmic wave pattern. The 10" x 6" size gives you a generous working area for smooth, continuous curves.

What warranty comes with the Handi Quilter Flipped Curve Ruler, and what support does OSP Machines provide?

Handi Quilter backs this product with a 10-year casting warranty, 5-year mechanical warranty, and 5-year electrical warranty, plus free parts and labor for the first 90 days. OSP Machines is an authorized Handi Quilter dealer and provides free support for the life of your machine — just reach out any time you have questions.