Gas forge and venturi principles?

C

cjweaver13

Joined
Jun 19, 2018
Messages
43
Hey all, new user here. I am just making myself finally get into bladesmithing after prolonged interest and am in the process of making my first gas forge and burner.

The plan is to use 1-1/2 > 3/4" reducer with 8 or 9" 3/4" tube, with 3/4" -> 1" expander on end. Also will be using .03 mig tip for nozzle. After watching the linked video, what would be gained or lost by adding additional reducer for a couple inches, and/or adding another hole maybe 6mm somewhere along 3/4" pipe, theory being thinning out fuel mixture at flame end?

 
The venturi principle is well established.les at Atlas Forge
Making venturi burners is well established.
It is hard to re-invent the wheel. When you start modifying what already works well, it usually works less well.
Do a search on "venturi burner" and you will get lots of build info. I believe some of it is also in the Stickys.

That said, Charles at Atlas Tool amd Forge is a member here. He makes and sells burners with the gauge, hose, valve, and burner for less than you can make one fron scratch. They are plug and play with all the engineering worked out.
 
Thanks for the reply. I like to get involved with the diy aspect because I feel I learn more and become self reliant and knowledgeable. That being said, Atlas forge has some great looking stuff and I definitely bookmarked for later use I'm sure!
 
I'v made 3 different burners from plans on the Internet. They all worked reasonably well. They were all time consuming and more expensive to build than an Atlas Forge burner. I bought a 100k Atlas burner and literally installed it in 30 seconds. I've been using it for a year and a half and it works outstanding.
I wish I had just bought the Atlas burner to begin with and not wasted my time, propane and money.
 
I'm all for the DYI stuff, too. However, there are places where you can waste time and money that could be spent on a better part of the project. Build the best forge you can, using the best materials. That is where the time and money should go. Buy an Atlas, Reil, T-rex, or other known burner and take one variable out of the equation.

Ron Reil's info is very good to read no matter what burner you buy or build.
http://www.ronreil.abana.org/design1.shtml

While we are talking burners, consider a blown burner. They are much more controllable and allow the forge atmosphere to be adjusted. I think a blown burner is easier to build, and not all that much more expensive if you have some scrounging skills.
 
Stacy E. Apelt - Bladesmith said:
I'm all for the DYI stuff, too. However, there are places where you can waste time and money that could be spent on a better part of the project. Build the best forge you can, using the best materials. That is where the time and money should go. Buy an Atlas, Reil, T-rex, or other known burner and take one variable out of the equation.

Ron Reil's info is very good to read no matter what burner you buy or build.
http://www.ronreil.abana.org/design1.shtml

While we are talking burners, consider a blown burner. They are much more controllable and allow the forge atmosphere to be adjusted. I think a blown burner is easier to build, and not all that much more expensive if you have some scrounging skills.
Click to expand...


I am definitely more intimidated by that idea up front, but will definitely do some research and probably give it a go. I have some old piping laying around still and an old air mattress pump I can play with and ruin lol
 
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