![This might be a dumb question, but I'm new to machining. I'm trying to recreate this expanding ring mandrel. How do I machine the inside hole where the screw goes to make This might be a dumb question, but I'm new to machining. I'm trying to recreate this expanding ring mandrel. How do I machine the inside hole where the screw goes to make](https://preview.redd.it/wvb2b4ya5gv71.png?auto=webp&s=228e9cc6d782b0fdd8b21004d241dd1c28aec64d)
This might be a dumb question, but I'm new to machining. I'm trying to recreate this expanding ring mandrel. How do I machine the inside hole where the screw goes to make
![Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Ring Sizes 11-14) : Arts, Crafts & Sewing Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Ring Sizes 11-14) : Arts, Crafts & Sewing](https://m.media-amazon.com/images/I/51B8rxsUkfL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Ring Sizes 11-14) : Arts, Crafts & Sewing
![JDG Pro Ring Mandrel | Projects | Craft Supplies USA | Craft supplies usa, Wood turning lathe, Wood turning JDG Pro Ring Mandrel | Projects | Craft Supplies USA | Craft supplies usa, Wood turning lathe, Wood turning](https://i.pinimg.com/736x/e5/f7/eb/e5f7eba4580c35fa02a5357f1363d120.jpg)
JDG Pro Ring Mandrel | Projects | Craft Supplies USA | Craft supplies usa, Wood turning lathe, Wood turning
![Amazon.com: Expanding Ring Mandrel with Hex Allen Key – Large Size Steel Ring Mandrel for Lathe – Heavy Duty Ring Shaper Tool for Ring Turning and Ring Making - Ring Sizes(11-14) - Amazon.com: Expanding Ring Mandrel with Hex Allen Key – Large Size Steel Ring Mandrel for Lathe – Heavy Duty Ring Shaper Tool for Ring Turning and Ring Making - Ring Sizes(11-14) -](https://m.media-amazon.com/images/I/81DXBWhq6sL.jpg)
Amazon.com: Expanding Ring Mandrel with Hex Allen Key – Large Size Steel Ring Mandrel for Lathe – Heavy Duty Ring Shaper Tool for Ring Turning and Ring Making - Ring Sizes(11-14) -
![Stainless Steel Expanding Ring Mandrel Ring Making Supplies - Etsy | How to make rings, Making supplies, Rings Stainless Steel Expanding Ring Mandrel Ring Making Supplies - Etsy | How to make rings, Making supplies, Rings](https://i.pinimg.com/originals/39/da/fc/39dafc7df2988e8883fbac3f3d9e5fe7.jpg)
Stainless Steel Expanding Ring Mandrel Ring Making Supplies - Etsy | How to make rings, Making supplies, Rings
![Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Full Set) : Arts, Crafts & Sewing Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Full Set) : Arts, Crafts & Sewing](https://m.media-amazon.com/images/I/61gfQspQg2L.jpg)
Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Full Set) : Arts, Crafts & Sewing
![Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Ring Sizes 4-7) : Arts, Crafts & Sewing Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Ring Sizes 4-7) : Arts, Crafts & Sewing](https://m.media-amazon.com/images/I/51vxBbMejKL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Ring Sizes 4-7) : Arts, Crafts & Sewing
![Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Full Set) : Arts, Crafts & Sewing Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Full Set) : Arts, Crafts & Sewing](https://m.media-amazon.com/images/I/51ajEb39JvL.jpg)
Amazon.com: Expanding Stainless Steel Ring Mandrel for Ring Turning and Ring Making. (Full Set) : Arts, Crafts & Sewing
![Amazon.com: Expanding Ring Mandrel-Ring Mandrel for Lathe,Ring Stretcher, Ring Sizes(7.5-10.5) Turning and Manufacturing Rings Making : Arts, Crafts & Sewing Amazon.com: Expanding Ring Mandrel-Ring Mandrel for Lathe,Ring Stretcher, Ring Sizes(7.5-10.5) Turning and Manufacturing Rings Making : Arts, Crafts & Sewing](https://m.media-amazon.com/images/I/51CaKIWPkhL._AC_UF894,1000_QL80_.jpg)