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Pottery rib tool for mug making. The Curvy Rib.

SparksPotterybyRhi  

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Star Seller. This seller consistently earned 5-star reviews, shipped on time, and replied quickly to any messages they received.

Highlights

  • Supplies for making crafts
  • Materials: 3d printed, PLA filament

Please note: Shipping is only charged once per order for all items from my shop. So, if you order multiple items from me, it costs the same as ordering just one item.

One of my 4 different mug shaped ribs: The Curvy gives a lovely comfortable rounded form.

As with all my ribs, I designed them to have a sharp angled edge so it acts a bit like a metal rib that scrapes the slip/water covered surface off your pot as you are forming the piece. They also have an inbuilt foot shape reducing the trimming your pot needs at the leather hard stage and elevates your pot off the ground, providing visual interest and a lightness to the final form.

These ribs now come in 3 sizes:
Mini: 7cm tall
Standard: 10.5cm tall
Maxi: 15cm tall.

I have a video on my YouTube channel giving tips and advice for using ribs, you can find it here https://youtu.be/rp7VguB4GNE?si=LiEE-yFllgv5Q5Q4

For left handed potters who have their wheel spinning clockwise, please let me know if you require a left handed version.

Using form ribs like this takes some practise, my best advice is to throw your pot to a similar shape of the rib and then use the rib to finesse the shape. I have found that about 500g of clay is perfect for this rib.

As will all my ribs, this tool comes with a small magnet on the back so you can store it on a magnetic tool rack – no more rooting around in drawers or tubs trying to find the tool you need!

This is a made to order 3D printed item. It is made out of PLA filament which is a recyclable, natural thermoplastic polyester that is derived from renewable resources such as corn starch or sugar cane. It is biodegradable under certain conditions.

Do you have your own 3D printer? I am now selling the 3MF file for this item on a customer by customer basis, please message me if you would like to purchase the print files. THESE ARE STRICTLY FOR PERSONAL USE ONLY.

Copyright: Invented and designed by Rhiannon Sparks, 2024.

USA customers: I'm now shipping to you DELIVERED DUTIES PAID via the Royal Mail who require a recipient's mobile number for shipping to the USA to facilitate customs clearance and improve delivery efficiency by allowing local carriers to contact the recipient if they encounter issues, such as difficulty locating the address or scheduling delivery.
I always send items tracked so you can follow it on its journey - any delays are outside of my control.

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  • Order today to get by Jun 12-22
  • Returns & exchanges accepted within 30 days
  • Cost to ship: $17.01
  • Ships from: United Kingdom

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Reviews for this item

Buyer highlights, summarized by AI: Easy to use · Love the shop · Happy with purchase · Fast shipping · Great quality · Looks great · Would recommend

5.0

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

(7 reviews)

5.0 Item quality
5.0 Shipping
5.0 Customer service
100% Buyers recommend
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5 out of 5 stars 5 This item

Angi Jan 19, 2026

Good, bought for a present

Angi Jan 19, 2026

5 out of 5 stars 5 This item

Alexia Aug 15, 2025

Can’t wait to try these out! Diolch!

Alexia Aug 15, 2025

5 out of 5 stars 5 This item

Kim Apr 25, 2025

I love the tools from this shop. Can't wait to buy more!

Kim Apr 25, 2025

5 out of 5 stars 5 This item

Etsy buyer Apr 3, 2025

Super happy with my purchase

Etsy buyer Apr 3, 2025

SparksPotterybyRhi
SparksPotterybyRhi ·

Wales, United Kingdom

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience. 5.0
·
4.1k sales
·
12 years on Etsy

Typically responds within a few hours

Typically responds within a few hours

Smooth shipping Has a history of shipping on time with tracking.

Speedy replies Has a history of replying to messages quickly.

Rave reviews Average review rating is 4.8 or higher.

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Listed on Jun 5, 2026