--- product_id: 401594593 title: "Radius Ball Turning Tool for Lathe – 3/8\" Shank HSS Tool Bit – Turns Concave & Convex Balls – Fits 7x14 & 7x16 Mini Lathes" price: "KD 28.88" currency: KWD in_stock: true reviews_count: 10 url: https://www.desertcart.com.kw/products/401594593-radius-ball-turning-tool-for-lathe-3-8-shank-hss store_origin: KW region: Kuwait --- # Turns both concave & convex spheres 3/8" HSS shank for precision fit Fits 7x14 & 7x16 mini lathes Radius Ball Turning Tool for Lathe – 3/8" Shank HSS Tool Bit – Turns Concave & Convex Balls – Fits 7x14 & 7x16 Mini Lathes **Price:** KD 28.88 **Availability:** ✅ In Stock ## Summary > 🎯 Master the art of perfect spheres — don’t let your mini lathe miss out! ## Quick Answers - **What is this?** Radius Ball Turning Tool for Lathe – 3/8" Shank HSS Tool Bit – Turns Concave & Convex Balls – Fits 7x14 & 7x16 Mini Lathes - **How much does it cost?** KD 28.88 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/401594593-radius-ball-turning-tool-for-lathe-3-8-shank-hss) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Radius Options:** Supports a wide range of project sizes with multiple radius tools available, from 3/8" shank up to 65mm max radius. - • **Precision Sphere Crafting:** Engineered for flawless concave and convex ball turning on mini lathes, unlocking complex shapes with ease. - • **Compact & Ergonomic Design:** Streamlined for quick tool changes and comfortable handling, maximizing your productivity and workflow. - • **Universal Mini Lathe Compatibility:** Seamlessly fits popular 7x14 and 7x16 mini lathes, expanding your workshop’s capabilities instantly. - • **Durable High-Speed Steel Construction:** Built to last with premium HSS tool bit, ensuring consistent performance for light to medium-duty projects. ## Overview The Assorts Radius Ball Turning Tool is a precision-engineered HSS tool bit with a 3/8" shank designed specifically for turning concave and convex metal spheres on 7x14 and 7x16 mini lathes. Its durable construction and compact design enable hobbyists and professionals to create complex spherical shapes with ease, enhancing the versatility and efficiency of mini lathe operations. ## Description Product description Precision Radius Ball Turning Attachment – Max 65 mm Radius Easily mount the Radius Ball Turning Attachment on your lathe tool post, align the DCMT11T304 carbide insert with the center of your workpiece, and rotate the handle to smoothly form accurate ball ends or radii up to 65 mm. Ideal for both mini and large lathes, with a heavy-duty bearing base and clear 0–90° side markings for precise control. Product Feature – Built for High Hardness & Durability Crafted for long-lasting performance, this Radius Ball Turning Attachment features a DCMT11T304 carbide insert with high hardness for precision machining. Enjoy enhanced handling with a non-slip grip, clear 0–90° side markings, and a sharp center point for accurate alignment. Perfect for professional results in turning spherical profiles or radii with confidence. Heavy-Duty Radius Ball Turning Attachment for Mini & Large Lathes Designed for 7/16" mini lathes and larger lathe machines, this high-performance Radius Ball Turning Attachment features a DCMT11T304 carbide insert and a robust bearing base for heavy-duty operations. Crafted from high-quality steel for superior strength Durable and reliable under continuous use Delivers long-lasting performance, shaping precise radii up to 65 mm Includes clear 0–90° side markings for accurate control and repeatability. Detailed Product Size – Radius Ball Turning Attachment This Radius Ball Turning Attachment is engineered with precision dimensions for smooth performance on mini and large lathes Total Height: 116 mm Body Diameter: 66 mm Insert Height: 38 mm Tool Post Block: 55 mm x 15 mm Slot Width: 7 mm Also includes a DCMT11T304 carbide insert, robust rotating handle, and allen key for adjustments. Built for accuracy, durability, and easy installation on the tool post. Engineered for Excellence – Built with Premium Alloy Steel Assorts tool holders are crafted from premium alloy steel, heat-treated to deliver maximum strength, durability, and wear resistance. Designed for demanding industrial applications, these components ensure reliable performance and long-lasting precision. Trust MachE for tools that go the distance. Engineered for Excellent Precision Every Assorts tool holder is crafted with high-accuracy calibration and fine markings, ensuring precise adjustments and flawless alignment. Designed for machinists who demand perfection, our tools deliver tight tolerances and repeatable results—every single time. Choose Assorts for confidence in every cut. Flawless Integration – Proven Performance on Machines Assorts tool holders are designed for seamless compatibility with your lathe or CNC setup, delivering stable, vibration-free performance. As shown in real working conditions, our tools integrate effortlessly, ensuring precision, reliability, and productivity on the shop floor. Get the job done right—with Assorts. Review: Junk - spindle the handle is connected to isn't keyed, so slips. Thats the negative part. Can be fixed with a bit of machining, but something the manufacturer didnt care about, so you shouldn't care about supporting the manufacturer. FYI issues: 1. limited to diameter. Something I didnt consider when purchasing. Hopefully that helps you make a decision. 2. Handle on bit doesn't clear my QTP top ,so had to rotate the handle on the bit which could interfere with other things or introduce a safety issue. Review: If you need small balls, this WILL make them! - The replacement for the first tool (received without a cutter bit) was complete. After I insured all screws were tight, I attached it to my lathe using a quick-change tool holder. First thing I tried was to simply turn a rounded end on a piece of Delrin plastic. It took a bit to get used to the process, but I turned a very nice half round onto the end of the plastic. I then chucked up a short length of 1/2" aluminum rod. I insured the rod end was far enough out of the chuck that the tool would not impact the chuck jaws in use. I undercut a length of the shaft from about 1/2" from the end of the rod back about an inch and turned that down to roughly 1/4 diameter. Then I set the tool horizontal to the work, touched off at the dead center of the rod. I moved the cross feed out far enough that the cutter was clear of the work. I then started the lathe and moved the bit in until it made contact with the right hand end of the work. I swung the handle left and right and knocked the edges off the work. I advanced the tool and swung the handle between the center of the end of the rod and back as far as it would go - that is, until it struck the undercut section of the rod. I continued advancing a little at a time until I was cutting the entire surface of the nicely-forming ball on the end of the shaft ! Once I had tool cutting during the entirety of the swing I stopped cutting and polished the ball and shaft with 400 grit sandpaper. The result a smooth, shiny ball about 3/8" diameter. I hadn't measured anything exactly in this test, just wanted to see if it worked. IT DOES!! Feed slowly and use enough speed to prevent chatter. I think this will work for all the small projects I may want balls for. I will try drilling and tapping the next one with 1/4-20 thread so I can screw it onto a "handle" - this is still test, try, learn mode. But think it will get lots of practical use in the future. ## Features - Precision Radius Ball Turning Tool Designed For Accurate Machining Of Concave And Convex Metal Spheres On Mini Lathes. - 3/8" Shank HSS Tool Bit Ideal For Light To Medium-duty Sphere Turning Operations On 7x14 & 7x16 Mini Lathes. - Multiple Sizes To Suit Your Needs: From 3/8" Shank Hss Bits To Larger Radius Tools Supporting Up To 65mm Max Radius For A Wide Range Of Projects. - Durable & Reliable Construction Designed For Repeated Use, Delivering Long-lasting Performance For Hobbyists, Machinists, And Professionals. - Enhances Mini Lathe Capabilities By Enabling Complex Spherical Radius Turning Previously Difficult With Standard Lathe Tools. - Compact Design For Easy Handling And Quick Tool Changes, Maximizing Workshop Efficiency And Productivity. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09KV8MGSZ | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #477,924 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #476 in Lathe Turning Tools | | Color | Black | | Customer Reviews | 3.0 3.0 out of 5 stars (25) | | Date First Available | November 2, 2021 | | Included Components | 1 ball turning | | Item Package Quantity | 1 | | Item Weight | 8.8 ounces | | Item model number | ALRTA-19 | | Manufacturer | Assort Machine Tools Co. | | Material | Tool Steel | | Package Dimensions | 6.3 x 3.82 x 1.65 inches | | Part Number | ALRTA-19 | | Power Source | hand_powered | | Size | 3/8" HSS Shank | ## Images ![Radius Ball Turning Tool for Lathe – 3/8" Shank HSS Tool Bit – Turns Concave & Convex Balls – Fits 7x14 & 7x16 Mini Lathes - Image 1](https://m.media-amazon.com/images/I/61lXiQBwckL.jpg) ![Radius Ball Turning Tool for Lathe – 3/8" Shank HSS Tool Bit – Turns Concave & Convex Balls – Fits 7x14 & 7x16 Mini Lathes - Image 2](https://m.media-amazon.com/images/I/61NWabqdXCL.jpg) ![Radius Ball Turning Tool for Lathe – 3/8" Shank HSS Tool Bit – Turns Concave & Convex Balls – Fits 7x14 & 7x16 Mini Lathes - Image 3](https://m.media-amazon.com/images/I/713PiwEzBnL.jpg) ![Radius Ball Turning Tool for Lathe – 3/8" Shank HSS Tool Bit – Turns Concave & Convex Balls – Fits 7x14 & 7x16 Mini Lathes - Image 4](https://m.media-amazon.com/images/I/518qHHTj68L.jpg) ![Radius Ball Turning Tool for Lathe – 3/8" Shank HSS Tool Bit – Turns Concave & Convex Balls – Fits 7x14 & 7x16 Mini Lathes - Image 5](https://m.media-amazon.com/images/I/51nZRhe12rL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐ Junk *by A***S on December 20, 2022* spindle the handle is connected to isn't keyed, so slips. Thats the negative part. Can be fixed with a bit of machining, but something the manufacturer didnt care about, so you shouldn't care about supporting the manufacturer. FYI issues: 1. limited to diameter. Something I didnt consider when purchasing. Hopefully that helps you make a decision. 2. Handle on bit doesn't clear my QTP top ,so had to rotate the handle on the bit which could interfere with other things or introduce a safety issue. ### ⭐⭐⭐⭐ If you need small balls, this WILL make them! *by K***R on August 1, 2023* The replacement for the first tool (received without a cutter bit) was complete. After I insured all screws were tight, I attached it to my lathe using a quick-change tool holder. First thing I tried was to simply turn a rounded end on a piece of Delrin plastic. It took a bit to get used to the process, but I turned a very nice half round onto the end of the plastic. I then chucked up a short length of 1/2" aluminum rod. I insured the rod end was far enough out of the chuck that the tool would not impact the chuck jaws in use. I undercut a length of the shaft from about 1/2" from the end of the rod back about an inch and turned that down to roughly 1/4 diameter. Then I set the tool horizontal to the work, touched off at the dead center of the rod. I moved the cross feed out far enough that the cutter was clear of the work. I then started the lathe and moved the bit in until it made contact with the right hand end of the work. I swung the handle left and right and knocked the edges off the work. I advanced the tool and swung the handle between the center of the end of the rod and back as far as it would go - that is, until it struck the undercut section of the rod. I continued advancing a little at a time until I was cutting the entire surface of the nicely-forming ball on the end of the shaft ! Once I had tool cutting during the entirety of the swing I stopped cutting and polished the ball and shaft with 400 grit sandpaper. The result a smooth, shiny ball about 3/8" diameter. I hadn't measured anything exactly in this test, just wanted to see if it worked. IT DOES!! Feed slowly and use enough speed to prevent chatter. I think this will work for all the small projects I may want balls for. I will try drilling and tapping the next one with 1/4-20 thread so I can screw it onto a "handle" - this is still test, try, learn mode. But think it will get lots of practical use in the future. ### ⭐⭐⭐⭐ Not the best build quality and a bit small but... *by I***E on January 31, 2022* Took some trial and error and a few you tube videos to learn how to use it but it does work quite nicely. I seriously doubt your gonna be turning steel with it. But I lost the ball on the end of my back gear lever and turned a new one with it out of delrin and it works really well I tried it on some aluminum and it worked but was a little chattery and the finish was so so. I haven't tried steel and probably won't ## Frequently Bought Together - Assorts Radius Ball Turning Tool for Lathe 3/8" Shank with HSS Tool Bit - 7 Pieces Center Drill Bits Set, M2 High Speed Steel 60-Degree Angle Center Drill Bits Kit Countersink Tools for Lathe Metalworking Size 1.0 1.5 2.0 2.5 3.0 4.0 5.0 - Mini Parting Tool Cut off Holder with 6Pcs HSS Blades for Mini Lathes 8mm Shank --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.kw/products/401594593-radius-ball-turning-tool-for-lathe-3-8-shank-hss](https://www.desertcart.com.kw/products/401594593-radius-ball-turning-tool-for-lathe-3-8-shank-hss) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-22*