SpinOlution 4 oz Orifice Bar
SpinOlution 4 oz Orifice Bar
SKU: SKU: SPN-ORF-04-HOOK
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The 4 oz orifice bar for SpinOlution spinning wheels. The orifice bar is the removable piece that completes the flyer assembly and locks the bobbin in place during spinning, attaching to the flyer arms via magnets for SpinOlution's quick-change bobbin system. Available in three interchangeable styles so you can pick the orifice feel that matches your spinning.
Choose Your Style
- Hook: the standard style that ships with every SpinOlution wheel. An open hook orifice that's fully bypassable, allowing complete freedom to spin anything from fine yarns to super bulky or heavily embellished art yarns without snagging or restriction.
- Tube: a 3D-printed tube with a standard round orifice. The closest match to how most other modern wheel brands set up their orifices, and a familiar feel for spinners coming from another brand.
- Delta: a 3D-printed tube with a delta-shaped opening engineered to keep yarn centered while spinning. Best suited for fine, precise yarn work.
All three styles are interchangeable on the same flyer, so many spinners keep more than one on hand and switch by feel or by yarn type.
Compatibility
The 4 oz orifice bar fits any 4 oz flyer on a SpinOlution wheel: the Pollywog, Echo, Monarch, Firefly, and Queen Bee. The 4 oz flyer rod is always 1/4 In diameter regardless of wheel age, so no rod-diameter measurement is needed for this size.
About SpinOlution
SpinOlution spinning wheels and accessories are designed and crafted in the USA. Browse the SpinOlution collection for the full lineup.
Why Paradise Fibers?
Your trusted partner in creativity since 1997. Family-owned, expert-driven, and dedicated to fueling your passion.
Real "Fiberers" on Staff
Family-owned and staffed by passionate experts offering real advice to support your creative journey.
A World of Fiber
Over 20,000 in-stock yarns, fibers, and tools, shipped quickly to keep your inspiration flowing.
Trusted by the Flock
Serving over 250,000 happy customers with a 4.9-star rating based on 10,000+ verified reviews.
Frequently Asked Questions
Most orders ship within 24 hours from our Spokane, WA shop (Monday–Friday). You’ll receive tracking as soon as your order is on the way!
Many of our products are beginner-friendly, and we make this clear in the product description.
You can also explore our kits and bundles, they include everything you need to get started with confidence.
Each fiber has its own feel and function. Merino is super soft and great for next-to-skin wear. BFL (Bluefaced Leicester) is strong, with a lovely luster. Need help deciding? Reach out! We’re happy to help.
For Yarn, check your pattern's yardage requirements. A standard pair of socks usually takes 100g of fingering weight, while a hat takes about 100g of worsted.For Spinning Fiber, a standard 4oz braid will generally make a pair of socks or a hat. For larger garments like sweaters, you will likely need 1.5 to 2 lbs of fiber.Still unsure? Send us your project details! We are happy to do the math for you to ensure you don't run short.
If a product goes out of stock after you order, we’ll notify you right away with options: a refund, a substitution, or a backorder (when possible). We never leave you hanging.
We offer 30-day easy returns on most unused products. If something arrives damaged or missing, we’ll make it right. Just contact our support team.
Yes! Our project kits and beginner bundles include hand-picked materials, tools, and instructions — so you can dive in without the guesswork.