Jbradshaw

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About Jbradshaw

  • Rank
    Advanced Member

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  • Gender
    Male
  • Location
    CNY
  • Interests
    Wood carving tools, knives
  1. If I ever say I'm going to build it instead...

    I worded it that way intentionally hoping to begin some discussion about the feasibility of doing a bolt together version for people that don't have access to a welder. I ran my thought process above by a mechanical engineer friend that trains at the same Muay Thai gym as me. Unfortunately he did not want to give a firm answer without running some math.
  2. If I ever say I'm going to build it instead...

    Frosty I'm not sure how to answer this, which may be a warning sign. But I can layout and drill holes accurately. There are multiple plans available for these presses (all welded versions though) and I do have copies of a couple of them (very similar to each other). And I do plan on welding using flux core wire. But I thought a redundant set of fasteners may add a level of safety, hence the question. What i was thinking is to reinforce the critical joints with a 3/4" grade 8 bolt (shear strength 40200 lb) on each side of the joint. That should distribute the force between the two bolts so there is 20,000 lb. to each bolt (using a 20 ton air over hydraulic jack). With the structure being built from square tube that would give each bolt two shear plains, so 10,000 lb per shear plain. So a safety factor of 4x. When considering that the force would be distributed to two joints (a total of four 3/4" grade 8 bolts), that should cut the numbers each bolt is exposed to in half again. If I were relying solely on the fasteners I would think that I would need at least two on each side of each joint to take any play out of the joint. I am a pharmacist not an engineer. So if the thought process I laid out above is faulty please fire away. I'd rather be dumb than dead.
  3. Time for a new apron!

    I've made an apron from the oil tanned Kodiak sides they sell at Tandy and am very pleased with it. They just happen to be on sale (brown only) for $99 for a side. That would make at least 2 aprons, even if you are looking for 48" length. My apron is shorter than 48" (chest to knees on a 5'10" frame) and I could definitely get 3 out of the side I purchased. https://www.tandyleather.com/en/product/kodiak-sides/kodiak-side-brown i don't know what shipping runs because there is a store locally.
  4. No rush. I hope to work on it next weekend, but no telling if that will happen. Kids. I have a good idea what to do to get two of three planes (four of six?) usable and at the same height, just not the third (5&6?). Worst case I end up with the ends elevated when they are used. I had a look around, but not an official tour. Our local forge master attended the tire hammer workshop. I would have liked to go too but I don't have the space. Currently working out of a one car garage that I have to be able to move everything so it can still be used for its original intended purpose.
  5. Any updates on the stand? I picked one of these up last week, but haven't gotten it home yet (vacationing in Maine). I'm already thinking about how to put it to use when I get home and first step is a stand. I can't think of a good solution to make each surface (sides, edges and ends) useable in a single stand.
  6. Hard Fire Brick Forges

    @GrumpyBiker I entered the gas forge world the same way. I didnt want to spend big bucks until I knew it was something I wanted to continue with. So I made a brick pile forge using hard brick (what I coulD find locally) and a Frosty T burner. It did take a bit to get up to temperature. But it let me make an informed decision about whether I wanted to spend the money to make a more permanent forge.
  7. If I ever say I'm going to build it instead...

    Does anyone have any thoughts on a bolt together version of this style of press?
  8. porter three eighth inch burner

    I am so glad I found this thread. I was starting the Burners 101 thread from the beginning again looking for the ideal orifice size for a 1/2" Mikey Burner since the MIG tips don't run small enough. Very early in that thread this one was referenced so I went looking. (I never actually got to my answer because I went on a search for this one). Commenting just to bump it in case anyone else missed it that would be interested.
  9. Burners 101

    Thanks. But I will remain a little dissatisfied until I do get it tuned perfectly since I know that it should be able to be. I will probably use it for a little bit and then get back to tinkering with it. Or maybe move on to a stainless steel version with three air openings instead of four. I was reading the thread on natural gas fired forges and saw a post a couple years old mentioning that vortex burners might work well with the low pressure that natural gas is supplied at. Did you ever get around to experimenting with a natural gas vortex burner?
  10. Burners 101

    Do I win a prize? I'll get back to experimenting with the orifice size soon. The baby woke up right after taking that photo. In the meantime it's good to know that it does the job if needed.
  11. Burners 101

    Well it's my first go at it. If I come up with something better in the future I'll let you know I noticed that the center cone on the flame in my last photo was a little off center. So I checked my jet and saw that it was no longer centered. I adjusted it back to center and fired it up. That did not make any difference in my flame in open air (I didn't really expect it to). I decided to stick it in the forge just to see what it looks like. I only letter it burn for a couple of minutes so it's not really up to forging temperatures yet
  12. Burners 101

    Sure. Running these small wire gauge bits through copper was actually quite easy to do. I found that the flutes did not carry the chips out very well though. So my approach was to twist the bit with gentle pressure using a pin vise until it started to bind. I would pause briefly, then continue to twist clockwise as if I were still trying to drill, and pull the bit all the way out of the hole. The twisting was an attempt to remove as much of the debris as possible while removing the bit. Once the bit was out I cleared the flutes with my fingers, and the continued as above. I did not use any lubricant for this process.
  13. Thanks for the link. That's a great video
  14. Burners 101

    Mikey thanks for the offer. I may take you up on it. But now a day later my frustration has abated. I'm going to try going back down to a smaller orifice and being more patient with trying to tune each increase.
  15. Burners 101

    I think I need to either get a second regulator, or hook up a line for a hand burner to my current setup. While I keep working on this it means I don't have my forge connected to a tank and can't do any forging (which is the whole point of making a burner anyway) That's the real reason I want to call it good enough.