FIGJAM‼️????

Core casting method for rings, Using transfer punches
1/2” – 1” diameter. (The problem with using sodium silicate, greensand, CO2 hardened extruded cores for core casting rings has always, for me, been finding suitable, inside diameter graduated tubes for a wide range of ring sizes for extruding the cores).
I have solved this problem by using short sections of steel rod acquired from a 33 piece set of Transfer Punches ranging from 1/2” – 1” diameter in 1/64” increments.
I cut off a short section of the size punch that has a comfortable, close fit to the inside diameter of the ring master that I need to core-cast.. that then fits comfortably inside my sand-casting boxes. (Cope and drag). I pack the drag box and press/hammer the ring master and steel core in place (half way)..then place and pack the cope.. remove the ring from the steel core and wrap the core with a layer of paper.. replace .. create vents, the sprue hole and funnel on the cope and pour the metal..SoHah❗️ I drive the core out by suspending the ring above the open, aluminium Protected jaws of a machinist bench vise. HeyPresto‼️POW‼️Core casting made simple. #figjam #corecast #sandcasting #sandcastjewellery #redclay #craigdabler #delftclay #greensand @brucepringlemetal #iteach (see my website on my profile for class details)