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Everything posted by nprovos

  1. The upgrade worked this time. Please, let me know if anything appears broken!
  2. I tried an automated forum update today which was failed. The only way to recover was to restore the backup from this morning. Some posts or files may have been lost. Sorry. I may try an upgrade again - some time soon? Niels.
  3. I recently made another puck. Here is a picture after consolidating with a 4 pound hammer. This is without folding just forged at high heat and flux:
  4. nprovos

    In Dublin

    It was built between 1712 and 1732. The Museum of Ireland in Dublin is great as well. They have a nice Viking-age display. Here is a pommel from an 11th century sword:
  5. nprovos

    In Dublin

    Definitely worth a visit even without blacksmiths :-)
  6. nprovos

    In Dublin

    I find myself in Dublin for a few days - currently waiting in line to see the Book of Kells. Does anyone here know any bladesmiths or blacksmiths in Dublin? Would be fun to visit a shop.
  7. Looks like it's back for another 3 months :-)
  8. I am traveling to Dublin right now. It will take a little while before I can look into this.
  9. Here is the video that goes with it:
  10. Here is another high carbon puck (1050g input -> 925g puck). And here is the knife polished up, quite a few areas where the forge welding did not complete but good enough to finish up: If you look closely you can also see the differential hardening/shallow hardening from the wedge shape of the knife. Let me know what you think, Niels.
  11. Not a lot of folds. Maybe 7-8. Some were triples. I had some difficulties getting carbon in initially and it was due to excess oxygen.
  12. I wanted to share some photos from a recent hearth steel experiment we ran. The setup replicated how Emiliano has been producing hearth steel. Our protocol may have been slightly different: Input: Mild Steel (1in x 1/2in x 5/16in) and charcoal (1in pieces) 7 charges (150g mild steel + 400g charcoal). 1 charge every 4 minutes. One additional charge of 400g charcoal. Output: ~950g of high carbon stuff Here are some pictures of the setup: 7 Firebricks standing up; 1in tyuere at roughly 3/4 the height of a firebrick angled slightly downward. In action video Extracting the puck. After quick consolidation on the power hammer. Spark test. Looking good. Knife after heat treatment. Unfortunately, I made the tang transition below where I forge welded some mild steel. Oops.
  13. We made some hearth steel a couple of weekends ago. Ran into some issues at first but Emiliano came to the rescue with sage advice. Here is a knife from the material after heat treatment.
  14. I never tried to cut with a torch before. I should have read up on it - on the other hand, it was sort of amusing trying to chase the heat around the cut and seeing it clearly not working. The plasma cutter is a blast, I have been using it for lots of other purposes as well, e.g. repairing the side blast forge. Thank you.
  15. Here is an update. I get to try the sucker for the first time :-)
  16. Here is the latest progress: Installed pivot for the air lever. Plasma cutting and extremely poor sheet metal welding to repair the back. I replaced it with 16 gauge instead of 17 which might make it last a little longer: Finally installed the tank and the tuyere: Almost looks like new :-)
  17. At the shop, we have been using a side blast forge for general blacksmithing. It's a great tool as clinker can be removed quickly without great interruptions to the fire. The side blast forge relies on a water cooled tuyere. After more than ten years of great service, the air pipe finally rusted through. I have attached some photos of the surgery and reconstruction. Forge area with tank removed: Tank cut open with plasma cutter - at that point it was clear already that the tank needed to be rebuild as well: Removing the air pipe with a die grinder: Fitting the new pipe: Rebuilding the tank from 3/16" steel plate: Finally leak testing the rebuild tank: It still needs to be installed and tested but this is how far I got during my holiday break. Happy hammering. Niels.
  18. I am glad you like these videos - they certainly make me appear much more competent than I feel in the moment. Especially straightening after a heat treat is something that I find exceedingly stressful :-)
  19. Some more updates on this. Please, let me know what you think.
  20. I first saw this at Schloss Gottorf many years ago and was inspired by it:
  21. I just posted another thing I am playing with on Twitter, I am not sure if the forum software will be able to understand it:
  22. I have filmed welding before. It's just takes a lot of effort to set it up. Check this out:
  23. Do you have a pointer to a welding lens? First time I have heard about it.
  24. I got to test run my metal dust collector today. The Thien Baffle I built seems to be working alright at least it seemed that the dust collected in the bottom of the machine rather than being blown out:
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