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nprovos

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Everything posted by nprovos

  1. 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.
  2. nprovos

    Hearth Steel Ala Emiliano

    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.
  3. nprovos

    What did you do in your shop today?

    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.
  4. A lot of us spent a lot of our time in front of the grinder. I ended up getting myself a powered positive pressure respirator to breath clear air. However, the metal dust from the grinder gets everywhere. There is no surface in my shop where I don't get dust. On the other hand, dust collection for metal is surprisingly difficult. Many here use a water-based spark trap which also gets really messy. I found myself with some spare time and the desire to play with sheet metal. So, I am starting to build my own metal dust collector that does not require any water. As usual, I put this exploration on video. So, far I have built a Thien Baffle. Let me know if you have any advice or feedback.
  5. nprovos

    Building a Metal Dust Collector

    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.
  6. nprovos

    Building a Metal Dust Collector

    Here is an update. I get to try the sucker for the first time :-)
  7. 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.
  8. nprovos

    Rebuilding a Side Blast Forge

    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 :-)
  9. It's been a while since I had anything to post but I have been catching up on my video. Here is the current progress on a broad seax: This has not been a straightforward as I would have liked - future episodes will show me reforging and tapering the nozzle of my forced air propane burner Let me know what you think. Ps: Some of you may also be interested in my Patreon experiment: https://www.patreon.com/nielsprovos
  10. nprovos

    Forging a "Viking" Broad Seax

    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 :-)
  11. nprovos

    Forging a "Viking" Broad Seax

    Some more updates on this. Please, let me know what you think.
  12. I have been toying with the idea of making a video that explains the pattern-welding process via computer visuals. Here is an early experiment from 2016: As part of that video, I would like to show a few high-quality pictures of pattern welded examples. If anyone here is interested in seeing their photo featured (with their name) in the video, please let me know. Ps: Progress on this will likely continue to be slow but I plan to complete the video this year.
  13. nprovos

    Pattern Welding Explained

    I first saw this at Schloss Gottorf many years ago and was inspired by it:
  14. nprovos

    Pattern Welding Explained

    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:
  15. nprovos

    Building a Metal Dust Collector

    I have filmed welding before. It's just takes a lot of effort to set it up. Check this out:
  16. nprovos

    Building a Metal Dust Collector

    Do you have a pointer to a welding lens? First time I have heard about it.
  17. nprovos

    What did you do in your shop today?

    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:
  18. nprovos

    Building a Metal Dust Collector

    Here is part two:
  19. nprovos

    Pattern Welding Explained

    Thanks for the pointer, Ric. I had not seen that yet. That's really good.
  20. nprovos

    Pattern Welding Explained

    This is blatant advertising of a commercial offering. So don't read further if that upsets you. I liked the pictures I had shared above and wanted to make a t-shirt and a higher quality printout of them for myself, e.g. something to quickly show folks to explain some aspects of pattern welding. While doing that I figured I might not be the only one who would think that neat and put them up on RedBubble for others to buy. Here are the final pictures I came up with: Ps: I do get a commission for orders placed. As I have worked on this for almost two years that does not seem unreasonable :-)
  21. nprovos

    Pattern Welding Explained

    I am getting to a place where I am happy with the visualization and can now focus more on animating the process. It's still going to be slow though.
  22. nprovos

    Pattern Welding Explained

    They are computer generated :-) I plan to make a fully animated video that shows stacking and twisting, etc. BTW, I am still looking for more people who would like to share photos of their pattern-welded blades to be included in said video :-)
  23. nprovos

    Pattern Welding Explained

    Sure. Here you go.
  24. nprovos

    Pattern Welding Explained

    Here is an update to show where I am currently at visualizing pattern development; some of you may recall this from a paper from Ypey: Let me know what you think about the current look. BTW, I am still looking for more examples of pattern welding in the real world. If you have any examples you would like to share, please let me know.
  25. nprovos

    Flame Edge Serpent Seaxes

    This came out great. Thanks for sharing! Looking forward to how they look when you are done with them.
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