Increasing the Thickness of a Rimmed Case

One issue with converting modern cases to be used as parent cases for old black powder cartridges is the thickness of the rim. In the past I've used two methods to increase it. The use of a rubber O ring isn't ideal since it doesn't provide a positive surface for the extractor to grab. The second, manually hammering the rim thicker is an extremely slow process. I experimented to see if the lathe can be used to fold the existing rims forward, increasing their thickness. It's possible, but the set up I used wasn't the best. I add a new chuck to my lathe and take steps towards making the process easily repeatable. Products I use and recommend: Tools: ER 32 Collet Chuck https://amzn.to/47028jB ER 32 Collet set https://amzn.to/4see0H8 Knipex Pliers Wrench 10" https://amzn.to/40PM40J Knipex Pliers Wrench 7 1/4" https://amzn.to/4nMZ80T Knipex Cobra Pliers 10" https://amzn.to/4lQ9bAZ Knipex Cobra Pliers 7 1/4" https://amzn.to/4orLqRx PB Swiss Slotted Screwdriver Set https://amzn.to/4lwUBxG Wheeler 89pc Screwdriver Set https://amzn.to/46jXWeV Starrett Pin Punch Set https://amzn.to/463vaiK Estwing 12oz Ball Peen Hammer https://amzn.to/4elEVL4 Halder Soft Faced Mallet https://amzn.to/44PFbz1 HHIP Bench Block (Steel) https://amzn.to/4k6ECVL Wheeler Bench Block (Plastic) https://amzn.to/46INjT7 Starrett 18A Automatic Center Punch https://amzn.to/45p7zYU Soft Vise Jaws https://amzn.to/4l03crM Dial Calipers https://amzn.to/3IRfF3H 6" Steel Rule https://amzn.to/40H3flf Big 45 Frontier Metal Cleaner https://amzn.to/3VTJ6FD Kroil Penetrant 8oz https://amzn.to/46wsiuX Lily White Sewing Machine Oil 1 gallon (use as a gun oil) https://amzn.to/4kYOXU4 Non Detergent Oil https://amzn.to/454GrhT Boiled Linseed Oil https://amzn.to/46IAbNX Narex Chisel Set https://amzn.to/40DU05e BeaverCraft K9/10 Gouge https://amzn.to/3H9xhY5 Bosch Colt Router https://amzn.to/44PazOa Bosch Router Plunge Base https://amzn.to/4fbVfyG Bosch Router Fence https://amzn.to/46vYQoY Whiteside 1/4" Carbide Spiral Bit https://amzn.to/4ohnss3 Cove Bit Set 1/4" Shank https://amzn.to/453gZbb 3/8" x 48" Aluminum Round (Cleaning Rod) https://amzn.to/4m3984i Shooting: Peltor Sport Tactical 100 Electronic Earmuffs https://amzn.to/4fbQhlw ESS Crossbow Suppressor Safety Glasses https://amzn.to/41hpCxI Highwild AR500 10" Gong 1/2" https://amzn.to/4mjntK5 Highwild AR500 Hanger and Target Stand Kit https://amzn.to/3GJklbu 12" Shoot and See Targets https://amzn.to/3IOpAXO Arrow JT27 Stapler https://amzn.to/46BbfYR MidwayUSA Competition Range Bag https://amzn.to/4mgWD5p Caldwell Shooting Rest https://amzn.to/46vT6vj Emarth 20-60x60 Spotting Scope https://amzn.to/4lb9xkA Other: 3M Worktunes Bluetooth Earmuffs https://amzn.to/4kX2wnj Spyderco Para 3 Pocket Knife https://amzn.to/40DyPQT RCBS Rebel Master Kit https://amzn.to/4l2wuq2 Frankfort Arsenal Rotary Tumbler Lite https://amzn.to/41enAhO DISCLAIMER All subjects featured on this channel are shown for historical and informational purposes only. All gunsmithing work is intended to restore the item to it's original condition, never modifying to serve any other purpose. In no way, shape or form is anything featured on this channel ever intended to be sold at any time. Any messages regarding selling a firearm, ammunition or an accessory will be removed. Everything shown is legal where the creator is located, please check your local laws. 00:00 Intro 03:05 Folding over the rim 08:17 Results 10:37 Brass used 11:36 A better way to hold the case 17:29 Making a tommy bar 18:58 Locating stop? 19:41 Repeatability testing 25:19 Turning the diameter 26:32 Conclusion