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I Forge Iron


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About Mikey98118

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    Seattle, WA

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  1. Making miniature gas jets from capillary tube & MIG contact tips Miniature burners (3/8” and smaller) bring up an instance where friction of the moving gas molecules down their tiny jet orifices become a major design factor. In larger burners, the smaller the gas orifice diameter the leaner a given size of burner tends to burn, in even the longest available threaded MIG contact tip. But, due to increased friction, you will find cutting a 0.020” I.D. capillary tube 9/16” long and mounting it within a MIG contact tip (drilled to match the capillary tube’s outer diameter, if necessary) w
  2. hat should have read "2-1/2 years". Third time's the charm?
  3. Mark, Just read your letter on the other computer, but it isn't on this one (the wife bought me a laptop, so I'd keep her company in her garden room :-) So, while I/m trying to deal with it fully, my best advice about essential books for a guy like you (or me) is: Metalwork & Enamelling by Herbert Maryon. It was the inspiration behind my own poor text. No, they have nothing in common contextually, but his utter honesty was the shinning goal before me during the 2-1/2" I wrote away on Gas Burners for Forges, Furnaces, & Kilns. It would take another decade of writing to ma
  4. No; not Pine Ridge, but it is an interesting site! Lets see, going back to about 2006, I was looking through Warm Gglass equipment sites ( not a company name, but an art movement). As I vaguely remember it, this torch was made with several pure silicate tubes, put out a wide laminar flame, that was supposed to be ridiculously hot. Sorry, but between old age and two strokes that's the best I can recall. The melting point of pure silicon is 2577.2 F; quite a bit higher than the copper used in oxyacetylene torch tips.
  5. Not only do I think ribbon burners, if properly made and tuned, are dynamite. I think they are the only burner design that can be badly constructed and still end up operating quite satisfactorily.
  6. Laminar flow of flames are quite different from turbulent flow of flames, since they are mostly generated by vary different burner designs. What is promising about your thought is the fact that some turbulent flames are much gentler than others. A "T" and a Mikey burner both have turbulent flames, but the "T" burner's flames are far gentler than what comes out of a Mikey burner. There are advantages to be wrung from either type of flame. A third type of flame comes from a properly constructed and tuned ribbon burner; this is as close an equivalent to laminar flames as turbulent flames are ever
  7. I will do so, Mark. Twigg , I only mean to describe their general shape. But, yes, the commercial versions of flame tube do have a thicker cross section of wall thickness at the end orifice; I assume this is from spinning them into shape; whether the thick edge is also used for deliberate advantage or not, I don't know. Let us not forget the probable use of refractories in making some of these heating tips. Are you reading this, AFB?
  8. High-speed burners all produce turbulent flame. How turbulent depends on the design. And some designs may appear closer to desired flame types than others; this is true, and relevant; but not decisive. All flames can be considered as a working force; just waiting to be manipulated. One of the factors used to safeguard peak flame velocity is the length of a burner’s mixing tube. No matter what the design, lengthening that tube beyond the best length for peak performance will soften the flame, and can be used as a factor in manipulation. Nor is it necessary to start with an overlong mixing
  9. Concerning torch tips The major use of burners--nearly the entire use for blacksmiths--is to be mounted in heating equipment, But, a truly hot air/fuel burner also makes an economical hand torch. We normally consider each burner part in relation to its performance in a forge, or with a few of us, also in a casting furnace. Thus, most of us only consider flame retention nozzle design in that context. But, for those of us with a fascination with burner design itself, We are missing something HUGE. It is obvious that running a burner out in ambient air quires better nozzles. It is
  10. Burner sizes These burners are rated in “nominal” water pipe sizes, because most burners are built from pipe; this is always listed by smaller nominal sizes than their actual diameters, because long ago pipe’s outside diameters where standardized, so that parts from one manufacturer would fit another manufacturer’s fittings. But pipe walls in those days consisted of brass, which is far weaker than mild steel, so their outside diameters were oversize so that the pipes could carry their rated amount of liquid or gas, with the aid of thicker walls. Gradually, as material strength improved,
  11. All I see, that gives pause, is that the vertical section of pipe is much shorter than usual; this causes the horizontal section of pipe to be much closer to the heating forge top than it should be. This is an easy fix
  12. We were speaking about safety issues, when cutting with right angle grinders. Half the problem is too much torque. The other half of the problem is overlarge cutting discs. you can buy a conversion chuck that allows 4-1/2” angle grinders to spin ¼” mandrels, and have the equivalent of a die grinder to work with. Suddenly all the accessories for die grinders will be open for your use, including 1-1/2” friction cutoff discs.A fan speed controller, or router speed controller can do a lot to reduce the torque, and conversion chucks (regular Jacobs keyed chucks that screw right onto 5/8-11threads f
  13. Most have got it from "T"arnation?
  14. No; that is not a "T" burner!!! It is an amalgamation of every design flaw I can imagine! In fact, this 'design' looks to me like a deliberate cruel joke.
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