--- product_id: 411287052 title: "Radius Ball Turning Tool for Lathe 3/8\" Shank with HSS Tool Bit" brand: "assorts" price: "R$1142" currency: BRL in_stock: true reviews_count: 5 category: "Assorts" url: https://www.desertcart.com.br/products/411287052-radius-ball-turning-tool-for-lathe-3-8-shank-hss store_origin: BR region: Brazil --- # HSS & carbide options Precision radius control Fits 7x14 & 7x16 lathes Radius Ball Turning Tool for Lathe 3/8" Shank with HSS Tool Bit **Brand:** assorts **Price:** R$1142 **Availability:** ✅ In Stock ## Summary > ⚙️ Turn your mini lathe into a sphere-shaping powerhouse! ## Quick Answers - **What is this?** Radius Ball Turning Tool for Lathe 3/8" Shank with HSS Tool Bit by assorts - **How much does it cost?** R$1142 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/411287052-radius-ball-turning-tool-for-lathe-3-8-shank-hss) ## Best For - assorts enthusiasts ## Why This Product - Trusted assorts brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Engineered for relentless use, perfect for pros and passionate hobbyists alike. - • **Versatile Size Range:** From compact 3/8" shanks to robust 65mm radius tools—tailored for your project. - • **Dual Material Mastery:** Choose between high-speed steel or carbide inserts for every workload. - • **Pinpoint Precision Radius Turning:** Craft flawless concave & convex spheres with micrometer accuracy. - • **Universal Mini Lathe Compatibility:** Seamlessly integrates with popular 7x14 & 7x16 mini lathes. ## Overview The Radius Ball Turning Tool by ASSORTS is a precision-engineered lathe accessory designed for 7x14 and 7x16 mini lathes. Featuring both HSS shank and carbide insert options, it enables accurate concave and convex metal sphere turning across a range of sizes from 3/8" shank to 65mm radius. Durable and reliable, it’s ideal for hobbyists and professionals seeking consistent, high-quality radius shaping. ## Description Assorts Mini Lathe Ball Turning Tools are precision-engineered for machinists and hobbyists who need to turn perfectly concave and convex metal spheres on mini lathes. Designed for 7x14 & 7x16 mini lathes, these attachments include options with HSS shank tools or DCMT11T304 carbide inserts, allowing you to achieve both light and heavy-duty radius turning with accuracy. Each tool provides a secure attachment to your lathe and enables precise radius shaping, from small 3/8" shank tools to heavy-duty models with a maximum 65mm radius. Whether producing ball ends, curved profiles, or ornamental spheres, Assorts Mini Lathe Ball Turning Attachments combine durable construction, easy setup, and high repeatability. ✅ Compatible with 7x14 & 7x16 Mini Lathes ✅ HSS Shank or Carbide Insert Options ✅ Concave & Convex Ball Turning Capability ✅ Precise Radius Control (3/8" Shank to 65mm Max Radius) ✅ Ideal for Hobbyists, Toolmakers, and Professional Mini Lathe Users Review: Convex OK, concave not so much. - The description says this can be used to turn convex or concave. Works fine for convex but it is impossible to make concave curves at the end of a piece of stock because the cutting tip protrudes the tool holder by only a few thou. so after one or two passes the tool holder hits the work being cut. This is probably a limitation only if one is trying to make a concave indentation on the end of a piece of stock. Should be OK for making curved relief or concave cuts along the side of the stock. I made a new tool post to accept 1/4" lathe bits which can be extended beyond the tool holder to get around this problem. Review: Kugel - sehr gut ## Features - PRECISION RADIUS TURNING – Machine concave and convex metal spheres accurately on your mini lathe. - VERSATILE OPTIONS – Available in HSS Shank and DCMT11T304 Carbide Insert models for light and heavy-duty work. - MAXIMUM COMPATIBILITY – Designed for 7x14 & 7x16 mini lathes. - MULTIPLE SIZES – From 3/8" shank tools to 65mm max radius attachments, choose the right tool for your project. - DURABLE & RELIABLE – Built for repeated use, ensuring long-lasting performance for hobbyists and professionals alike. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09KV8MGSZ | | Item model number | ALRTA-19 | | Manufacturer | ASSORTS | | Package Dimensions | 16 x 9.7 x 4.19 cm; 250 g | ## Images ![Radius Ball Turning Tool for Lathe 3/8" Shank with HSS Tool Bit - Image 1](https://m.media-amazon.com/images/I/51rStJc3mAL.jpg) ![Radius Ball Turning Tool for Lathe 3/8" Shank with HSS Tool Bit - Image 2](https://m.media-amazon.com/images/I/61Ett7VlaHL.jpg) ![Radius Ball Turning Tool for Lathe 3/8" Shank with HSS Tool Bit - Image 3](https://m.media-amazon.com/images/I/61Szu7x5RML.jpg) ![Radius Ball Turning Tool for Lathe 3/8" Shank with HSS Tool Bit - Image 4](https://m.media-amazon.com/images/I/61bg8mVLZjL.jpg) ![Radius Ball Turning Tool for Lathe 3/8" Shank with HSS Tool Bit - Image 5](https://m.media-amazon.com/images/I/61s89r7dXvL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐ Convex OK, concave not so much. *by G***E on 26 July 2021* The description says this can be used to turn convex or concave. Works fine for convex but it is impossible to make concave curves at the end of a piece of stock because the cutting tip protrudes the tool holder by only a few thou. so after one or two passes the tool holder hits the work being cut. This is probably a limitation only if one is trying to make a concave indentation on the end of a piece of stock. Should be OK for making curved relief or concave cuts along the side of the stock. I made a new tool post to accept 1/4" lathe bits which can be extended beyond the tool holder to get around this problem. ### ⭐⭐⭐⭐⭐ Kugel *by H***N on 5 July 2023* sehr gut ### ⭐⭐⭐⭐⭐ Nice design, works great but you may need to make a spacer for some lathes *by H***R on 4 April 2025* I watched a few Youtube videos before purchasing this product and it seemed to bolt on to some lathes without any modification. However, on my new Vevor 7 X 16 lathe it was way too short to reach the chuck centerline. It needed a .485 thick spacer to raise the cutter to material centerline. Actually I just got a piece of .500 aluminum and fabricated the spacer. This left it .015 high but it works great for the moment. The bolt holes were no problem they all lined up perfectly and the stock screws were correct although on the very short side. It was only the height that needed adjustment. So FYI : The height of the cutter from the base on the one I received was 2.225 in / 56.5mm. You may want to check this dimension on your particular lathe to determine if you will need a spacer. I am very happy with this product. If it is mounted and used properly it is rigid based on the design, the bearing provides a very smooth turning action, there is no chatter at least on aluminum and it produces perfect chips if speeds and feeds are correct. I believe it is the best design out there. However, I have spent time improving the rigidity of my lathe. There is plenty of room for improvement on these Chinese lathes ## 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.br/products/411287052-radius-ball-turning-tool-for-lathe-3-8-shank-hss](https://www.desertcart.com.br/products/411287052-radius-ball-turning-tool-for-lathe-3-8-shank-hss) --- *Product available on Desertcart Brazil* *Store origin: BR* *Last updated: 2026-10-01*