I made iron using the old blower variant but using a larger diameter fan (30 cm rather than 25 cm). I did a longer smelt and a shorter smelt. The long smelt made 10 g of iron but the short smelt made 14 g sugesting that multiple shorter duration smelts may be more effective at producing iron rather than one long smelt. The iron was then put into a knife shaped mold and placed in a forge under a flattened tuyere to spread the blast ino a sheet. The iron in the mold partially welded and fused but didn't completely melt and it was broken in the middle. I put this down to the mold being too far under the tuyere blast as the coals above got white hot. I'm counting this as a partial sucess because the result could still be sharpened into some type of tool. The iron knife I made previously this was melted much more completely in its mold and further exeperimentation would be needed to re-learn this method of insitu casting. #primitivetechnology #iron #handmade #engineering The ultimate challenge is seeing how far human ingenuity can go. Subscribe here: https://www.youtube.com/channel/UCAL3JXZSzSm8AlZyD3nQdBA?sub_confirmation=1 About Primitive Technology: Building things in the wild completely from scratch no modern tools, no modern materials. The challenge is simple but strict: If I need a fire, I make a fire stick. If I need an axe, I shape a stone. Every hut is built solely from trees, mud, and rocks. I don't live in the wild, but I love discovering just how far we can go using only natural materials and human effort. Browse by Category: Visit the Playlists tab to find focused videos on Shelter, Pyrotechnology, Tools & Machines, Weapons, Food & Agriculture, and Weaving & Fiber. Follow Primitive Technology here: Website: https://primitivetechnology.wordpress.com/ Patreon: https://patreon.com/u2945881?utm_medium=clipboard_copy&utm_source=copyLink&utm_campaign=creatorshare_fan&utm_content=join_link Chapters: 00:00 Making a bigger blower 4:40 Furnace 5:42 Cordage 6:33 Making Charcoal 9:46 Getting Ore 10:10 Long smelt 15:02 Short smelt 20:15 Mold welding experiment Primitive Technology: Iron Prill Welding Experiment https://www.youtube.com/@primitivetechnology9550