Mikey98118

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About Mikey98118

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    Seattle, WA

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  1. Mikey98118

    3D printed plastic burner experiments (photo heavy)

    Oh my Look how small the mixing tubes are compared with the size of the forge they're running yellow hot.
  2. Mikey98118

    Forges 101

    As dry powder, you can find it anywhere that sells fiberglass supplies. It is available through eBay and Amazon.com. Mixed into water it is sold as rigidizer in pottery supply stores and on line.
  3. Mikey98118

    Burners 101

    I kind of hate to admit this, but...no beveling is necessary with such thin wall tubing as that. No doubt people will push this advise way out of shape, and hand me endless grief, but facts is facts.
  4. Mikey98118

    Gas Forge Build by first timer

    What was the brand on the 5000 F kiln cement? That might make an interesting binder material.
  5. Mikey98118

    Burners 101

    I'm sure the problem is the camera. I took all my photos with one of the earliest digital camera to come on the market, and never had any of these odd effects. Did you reach any construction conclusions you'd like to share with others? I liked the little knob on the choke screw. Did you find it laying around in a drawer, or in a shareware store? Shareware? I meant hardware.
  6. Mikey98118

    Burners 101

    I have noticed a tendency for the smaller burners to be something of a handful. Kind of like a car that has way too much horsepower; it isn't a problem, but it takes some getting use to Also, these photos show a complication for viewers. Digital cameras can really skew colors; this can make things more than a little tough for people to figure out... at any rate, congratulations on a nice job of building your burner, and making the magic flame.
  7. Mikey98118

    Forges 101

    You don/t need a number,. but if it eases your mind, 70 water % to 30% fumed silica by volume--not weight-- seems to be the most common formula.
  8. Mikey98118

    Forges 101

    Yes; for good and ill, it is what it is.
  9. Mikey98118

    Burners 101

    Where is the third picture?
  10. Silica is the most common binding material in refractories. It is a mistake to only consider melting temperatures and forget chemical interactions in refractories. Also, how small, or in this case thin, the silica surface is, which is interacting with the other refractory materials has much to do with what becomes of it during firing. I would be very surprised to find anything more than trace amounts of silica left in the interface between micro holes left from the bubbles and the alumina content surrounding them; or I could be completely wrong about this whole scenario In any case, whether dissolved or not during firing the whole point of these micro bubbles are in the voids in they leave behind in the refractory matrix. Perlite will certainly melt during firing, leaving voids behind where they rested in the refractory matrix. Sawdust will turn to charcoal, and then to ash, leaving behind voids. The desired end product is voids in the matrix, however we get there.
  11. Mikey98118

    Burners 101

    Materials for miniature gas tubes and jets for miniature burners 1/8” pipe nipples actually have .405” outside diameters; this starts becoming overlarge for gas pipes as burner sizes decrease; so smaller MIG tips in smaller gas tubes become the obvious next step to take. Smaller MIG tips with 12-24 thread can fit into actual 1/4” outside diameter tubing with 0.180” inside diameters. The reduction in tip and tube sizes serve small burners well. A #304 stainless steel tube, 11” long; 0.250” OD by 0,152” ID. By 0.049” wall thickness; $5.25 and shipping is available from Onlinemetals.com (Input part #457). It comes in 11” lengths for $1.80, or you can order a 2’’length of it custom cut for $.33; This tube’s thickness should provide good gas flow into a MIG tip, and remain a strong part for extensive external threading. This tube will except 12-24 internal thread, and 1/4-32 outside thread at the gas tube’s other end; you will need to drill the MIG tip area with a #12 bit before threading, to avoid breaking your tap. 12-24 thread has a major diameter of 0.216” and a minor diameter of 0.165” recommended drill bit in stainless steel (50 % thread engagement) is #12 (0.1890” diameter) MK Products 621-0001 series MIG contact tips are used in their Cobra® MX (262, 266), Cobramatic®, Cobra® System III, Cobra® MX Fronius MIG guns; they are 1-1/2” long, including threaded section; they thread into a 12-24 tapped holes. Lincoln also makes spray-arc contact tips that are compatible with MK Products; they are 1/4” diameter, and use 12-24 thread, are 1-1/2” long including threaded section; and are called PX-621-001 for .035 wires (.044” orifice); PX-621-003 for .045/3/64” wires (.060” orifice); PX-621-076 for .030 wires (.040” orifice); PX-621-0325 for .030 wires (.036” orifice).
  12. Mikey98118

    Burners 101

    Jet engines are wonderful examples of engineering for maximum benefit, but they are indended to change to exchange fuel for thrust; not heat.
  13. Mikey98118

    Burners 101

    I rate them as oxidizing and noisy..
  14. Mikey98118

    Double burner issue

    It The photo simply shows two good flames on two different burners.thte difference is simply that one has a larger flame retention nozzle than the other burner, and so it is putting out a wider flame.. Unless the video I can't get to play shows something unusual, I'd say that the answer to your problem is that you don't seem to have one
  15. Mikey98118

    3D printed plastic burner experiments (photo heavy)

    I have waited twenty years for the next big leap in burners; its time to see it--finally. 'course now he faces the big one; coming up with a catchy name before some wag can hang something on his burner first