Lampwork Etc.
 
AKDesign

LE Live Chat

Enter Live Chat

No users in chat


Donate via PayPal to donate@lampworketc.com

Beads of Courage


 

Go Back   Lampwork Etc. > Library > Tips, Techniques, and Questions

Tips, Techniques, and Questions -- Technical questions or tips

Reply
 
Thread Tools
  #1  
Old 2015-07-31, 2:55pm
ccaronn's Avatar
ccaronn ccaronn is offline
Christine
 
Join Date: May 16, 2015
Location: Chatham, Illinois
Posts: 272
Default Reducing flame, reduction

I am still not clear on what is meant by "reduction" and/or "a reducing flame". (I'm on a hothead.) Can anyone explain in simplest terms, please?

Last edited by ccaronn; 2015-07-31 at 3:07pm.
Reply With Quote
  #2  
Old 2015-07-31, 4:31pm
allicat's Avatar
allicat allicat is offline
Senior Moment
 
Join Date: Jun 16, 2012
Location: New Yawk
Posts: 4,161
Default

Sure. A reduction flame is one that's more fuel than oxygen.

With the HotHead you are always running on the fuel rich side, as the vent holes just add a small amount of room air. That's opposed to dual fuel torches, which are made to use an additional oxygen source (like an oxycon) and which you can adjust the flame composition.

A reduction (or fuel rich) flame affects certain glasses as the fuel is looking for O2 to combine with. When there isn't enough, it steals it from the glass, causing a reaction.

Make sense?
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


I never finish anything. I have a black belt in partial arts.
Reply With Quote
  #3  
Old 2015-07-31, 5:14pm
ccaronn's Avatar
ccaronn ccaronn is offline
Christine
 
Join Date: May 16, 2015
Location: Chatham, Illinois
Posts: 272
Default

Wow, I got it now. Thank you!
So, do all glasses reduce or just certain glasses, like boro, please? That is, if you deprive them of O2 in the flame?
Reply With Quote
  #4  
Old 2015-07-31, 5:41pm
Hayley's Avatar
Hayley Hayley is offline
da General
 
Join Date: Oct 05, 2006
Location: San Francisco
Posts: 13,002
Default

It's used for reducing silver glass such as those made by Double Helix to bring out the iridescence.

For a HotHead, people rig out some device (e.g., an aluminum "cup" or just wear heat proof glove) to cover the vent holes during the reducing process.

Here is a tutorial De made:
http://www.lampworketc.com/forums/sh...ad.php?t=86417

Here is like an aluminum "cup" but made with thick metal wire:
http://www.wetcanvas.com/forums/showthread.php?t=81961

Hope this helps.
__________________
Hayley


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
|
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
|
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
|
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
|
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Reply With Quote
  #5  
Old 2015-07-31, 5:48pm
allicat's Avatar
allicat allicat is offline
Senior Moment
 
Join Date: Jun 16, 2012
Location: New Yawk
Posts: 4,161
Default

No, not all glasses reduce; depends on their chemical composition. Some are formulated to be reduced, such as the glasses Hayley discussed above. Others do it because of their chemical make-up; you'll often find many blues made with copper will reduce as the reduction flame brings the copper to the surface.
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


I never finish anything. I have a black belt in partial arts.
Reply With Quote
  #6  
Old 2015-07-31, 7:46pm
ccaronn's Avatar
ccaronn ccaronn is offline
Christine
 
Join Date: May 16, 2015
Location: Chatham, Illinois
Posts: 272
Default

Thank you very much to you both!
Reply With Quote
  #7  
Old 2015-08-15, 4:42pm
nickles36 nickles36 is offline
Junior Member
 
Join Date: May 26, 2014
Location: Upstate NY
Posts: 1
Default

Thank you Allicat I was wondering the same thing �� and thank you Hayley that was a very helpful tutorial! I can't wait to try it ��
Reply With Quote
  #8  
Old 2015-08-27, 11:36am
ellyloo's Avatar
ellyloo ellyloo is offline
Ellyloo-YAH!
 
Join Date: Aug 01, 2006
Location: Port Colborne
Posts: 2,775
Default

I was very confused for a while. I seemed to see a lot of people use "reduce" for different effects.
For instance, if one was talking about getting the desired effect from Raku... sometimes I saw the word 'reduce' used. If you use a propane rich flame with Raku, you get a shiny metal surface, that's for sure, but it's not the desired effect.
What happens with Raku is more "striking" ...where you heat and cool and reheat for a colour to happen.

with some Double helix colours, they do nifty things with both reduction and striking.
__________________

To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Reply With Quote
  #9  
Old 2015-08-27, 3:22pm
Designa-glass's Avatar
Designa-glass Designa-glass is offline
Junior Member
 
Join Date: Jun 28, 2015
Location: Suffolk, UK
Posts: 11
Default

Lovely explanantions, thank-you
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump




All times are GMT -7. The time now is 9:25am.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Your IP: 18.204.2.190