What are some ways to 'mold'/change the shape of a flame?

[zogeta]

What are some ways I can go about change the shape of a bunsen burner flame, specifically in a linear shape of around 4cm

 

[Nidum]

Gas burners in general can be made to produce many different flame shapes .

What do you mean by a linear shape of around 4 cm ? Post a sketch .

 

[phinds]

I don't know for sure about bunsen burners but the propane torch that I use in my wood shop has the same kind of flame outlet and it has a variety of flanges that change the shape of the flame. Of course for it the gas shoots out under pressure so it easy to manipulate. As I recall bunsen burners from chem class they are a much more soft flame so that might not work.

 

[zogeta]

Gas burners in general can be made to produce many different flame shapes .

What do you mean by a linear shape of around 4 cm ? Post a sketch .

What I mean is that I would like the bunsen burner's regular flame to be transformed into a rectangle with a length of 4cm and a width <<<4cm

 

[bigfooted]

Do you mean like a slot burner? You want to create a thin rectangular flame sheet?

 

[Nidum]

Not too difficult to do . You need to make an extension for the Bunsen burner tube . Make the shape like the end of this one :
[PLAIN]http://gasproducts.co.uk/med...8eab33525d08d6e5fb8d27136e95/3/3/3358-1_1.jpg[/PLAIN]
http://gasproducts.co.uk/media/cata...8eab33525d08d6e5fb8d27136e95/3/3/3358-1_1.jpg

Ideally the exit flow area from the extension piece should be the same as the flow area in the main tube .

 

[Nidum]

If you want a really wide but narrow flame then use a proper slot burner as mentioned by @bigfooted or use several needle burners side by side .

One advantage of a proper slot burner is that the burner tube can be set horizontal so that you can avoid problems of excessive height .