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Thread: Need some help with Fuming

  1. #1
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    Default Need some help with Fuming

    Hello everyone

    My apologies for the wall of text, but I figured it'd help people give me accurate advice. I've currently hit a roadblock with fuming and I was hoping if someone could have a look at my technique and let me know how to improve. I've seen a number of folks on here get yellows and violets out of Silver fume and nice purples out of gold.

    My setup:
    Bethlehem Champion using LPG as my fuel source and oxygen cylinders as my oxygen source. Oxygen at 14psi, LPG at 2.5psi. Using 24K gold leaf to fume gold, and 999 fine silver to fume silver.

    I did a bunch of fuming tests, here's what I have. Note that all of these have a black backing on them:
    Click image for larger version. 

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    1. Normal Silver fume on Schott (doesn't look as blue in-person)
    2. Heavy Silver fume (I get some really ugly yellows)
    3. Normal Silver fume on Simax (some very nice electric blues)
    4. Gold fume on Simax


    My process for fuming is:
    1. Apply the fume by placing a Quartz rod with metal inside candles (reducing flame for silver, strong oxidizing for gold)
    2. Use transparent stringers to cover fume in pattern
    3. Continue working the piece as normal with fume encased


    What I've Tried:
    1. Increasing my regulator oxygen to 16psi, and dropping my fuel to 1psi
    2. Turning on my outer oxygen
    3. Giving a lighter fume, but this just seems to reduce the visibility of the fume
    4. Using a lower velocity flame, I turn down the knobs until the candles are really small
    5. I can get pinks from gold fume, but it needs to have a white backing. With a black backing, I get this golden-brown color which isn't very appealing


    I've read through the topic in the Higher Learning section and the articles by Freddy Faerron in The Flow. I believe it's an oxygen issue, but I can't see why.

    Could someone provide advice on what to do to improve the colors I get on my fume?

    Thanks

  2. #2
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    Default Re: Need some help with Fuming

    Get a pre mix hand torch.

    Low propane presure is a good idea.

    Simax not schott.

    Layers and fades usually get the range of colors.

    Less is more.

    The Jason Lee/ Lee bo fume thread , and the bowlpusher thread about fume. Also , re read the honeycomb quest thread.

    Blowing the silver off to that tobacco color I think it was page 15? Or 16? If you tried all the method on the comb thread, or just the method that have nice pictures included, you would find what your looking fir i.m.o.

    http://www.talkglass.com/forum/showt...Jason+Lee+fume

    If you can't see the bowl pusher thread you might have to ask a moderator.

    http://www.talkglass.com/forum/showt...ght=J+Lee+fume

    Heartburn glasses method yeileds big variations mabye it was page 7 or 8 (not 15 or 16)

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    http://www.talkglass.com/forum/showt...-tips-by-Leebo
    Last edited by BORO; 10-13-2021 at 01:46 PM.

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    Default Re: Need some help with Fuming

    Hi! Thanks for the reply!

    I hadn't read the Honeycomb thread before, and the technique outlined in that thread is very different to what I normally do. I do have a couple of questions:
    1. When I fume Silver, I get little wisps flying off the silver. This ends up hitting the rod being fumed and the rod ends up "spotty". Is this a problem? Is there a way to avoid it?
    2. When I start burning off the silver in the highly oxidizing flame (as outlined in that thread), do I burn it off completely? Or do I burn off enough such that the color of the fumed rod is light yellow, before striking again?

    Thanks so much!

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    Default Re: Need some help with Fuming

    You try to burn it off... but its baked into the glass , so it looks transparent amber color . If it all burnt off , it was too cold of a blank. Unless your really cooking the clear , then it may look like the fume is gone but it will come back in the kiln. (Second guess is not as likely)

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    Default Re: Need some help with Fuming

    Okay, so I gave it another shot, but no success, unfortunately. Here's what the rod looked like after fuming:
    Click image for larger version. 

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    However, as soon as I started hitting it with a high oxy flame, the fume burned off entirely. The glass was pretty much clear. And fume also did not return after hitting it with a reducing flame.

    Before fuming, I had the glass with a dull glow. By the time I was done fuming, it was not glowing at all.

    Was the temperature of the glass too low?

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    Default Re: Need some help with Fuming

    take another clear rod and melt it over the one pictured, maybe that will give u an idea about how the fume works...

    it travels into the clear, so when u lay it down you want to look at the side u layed down, not the side facing you...so like inside a tube fume, will show you the outside;, the oppoosite of your rod pic...

    get the surface of object to be fumed hot, not glowing but hot with a slow neutral flame small hold the silver at the edge of the yellow candles (outter edge) you'll see a little puff and the fume will vaporize like a little cloud puff, thats the part to catch on the hot object, now with a dragon breath reducing flame cook the fume it until the glass glows a little, then switch to a neutral flame to rinse of the soot or fume, and repeat that process until it basically doesn't rinse off and leaves you a metalic looking fume job!
    don't wash your hands with your sammich.
    naive
    *of or denoting art produced in a straightforward style that deliberately rejects sophisticated artistic techniques and has a bold directness resembling a child's work, typically in bright colors with little or no perspective.

    your linework is naive maybe try some fuming?
    GTT Phantom on Homefill
    first time on torch 07'

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    Default Re: Need some help with Fuming

    Hi Mute!

    Thanks so much for your post. I think I might have understood what you mean. After I encase this fume, it should travel up into the encasement. Did I understand you correctly?

    Also, the process you mentioned with the different flame types: That should be done before encasement, if I understand correctly?

    Thanks again!

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    Default Re: Need some help with Fuming

    i think yes.

    the fume on the surface isn't usually the desired effect but the trapped fume is, the oxidation muddies up the colors...so spray the fume and trap it with the least amount of flame exposure ....

    so 4 example...

    get a small piece of tube 25 or 30mm thin or standard wall thickness...or blow heavywall thin...spray the fume inside the tube, dragon flame the outside, not flames on inside of tube or touching fumed area......., wait for that yellow color, then burn off with hotter oxy flame vs the reduced to neutral, then switch back to reduced flame, spray and rinse until u get the desired metalic fume....you can see it b4 your done.

    fuming is imo some of the hardest stepped processes but once u get it down it's kinda simple to understand.

    my steps are for a gtt not really a premix which is usually preferred to fume with.

    its the rinsing and repeating in light layers that will give u the good colors
    don't wash your hands with your sammich.
    naive
    *of or denoting art produced in a straightforward style that deliberately rejects sophisticated artistic techniques and has a bold directness resembling a child's work, typically in bright colors with little or no perspective.

    your linework is naive maybe try some fuming?
    GTT Phantom on Homefill
    first time on torch 07'

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    Default Re: Need some help with Fuming

    Okay, gotcha. What I've been doing is taking that fumed rod I pictured above and lay on a few clear stripes, then twist it up. I then put on a black backing to see what the fume looks like.

    However, what I haven't been doing is striking it when the clear stringers were added (I just assumed the fuming process was done). I'll try it out again later and let you know how it goes.

    Thank you so much!

  10. #10

    Default Re: Need some help with Fuming

    For some nice colors, try light silver and heavy gold over it


  11. #11
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    Default Re: Need some help with Fuming

    So funny story. Yesterday, I gave up on trying to get those colors out of silver fume. Today, I fumed some silver and I stretched it out on a stringer. I saw the full spectrum: red to purple. Now, that being said, I'm pretty convinced this fuming technique works when the glass is thin. I haven't tried working with tube yet, since I'm very new, but I will revisit fuming on tubes in the near future.

    Thank you all for your input!

  12. #12
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    Default Re: Need some help with Fuming

    Quote Originally Posted by aommaster View Post
    So funny story. Yesterday, I gave up on trying to get those colors out of silver fume. Today, I fumed some silver and I stretched it out on a stringer. I saw the full spectrum: red to purple. Now, that being said, I'm pretty convinced this fuming technique works when the glass is thin. I haven't tried working with tube yet, since I'm very new, but I will revisit fuming on tubes in the near future.

    Thank you all for your input!
    blow the bubble thin, then open the end, fume light inside, wash and rinse/repeat, close end, shrink down/gather and you'll see the colors/silver migrating into the clear, the more u gather and the deeper the silver travels.

    it's a shame people don't share more info here.
    don't wash your hands with your sammich.
    naive
    *of or denoting art produced in a straightforward style that deliberately rejects sophisticated artistic techniques and has a bold directness resembling a child's work, typically in bright colors with little or no perspective.

    your linework is naive maybe try some fuming?
    GTT Phantom on Homefill
    first time on torch 07'

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