Learned something today. Never really realized the benefit of propane fuel, I just figured people really used it because it's more easily available/cheaper. Only need to hear once that it's just more heat overall, and it clicked in my brain. Even in the "simpler" jobs, there is still so much to learn. Got to love low volume job shop work, keeps a man sane because it keeps him on his toes.
It's important to remember that the tips are different. I believe you can get acetylene tips to work with propane, but it's not worth bothering with afaik.
@mrklean93 Glad you learned something. If I remember correctly John told me he has a propane tip that is rated for ~500,000 BTU/hr. It's some serious heat! -Cameraman
Good point about needing to allow enough room for the galvanized coating on the threads so that the nuts will thread on. I bought a lot of galvanized 1/4-20 carriage bolts from Home Depot for a project and it was impossible to screw the nuts on (not galvanized nuts) until I took the time to run a die down each one. Was a lot of time consuming work.
You can also heat the threads with a torch and wire brush the excess galvanizing off. If the threads don't need galvanized you can brush on a product (I believe it is galvstop) that keeps the galvanize from the parts that you don't want the galvanizing to stick to.
@@HOWEES mostly the cost of buying tanks and getting them filled/exchanged. My local welding shop can fill the small tanks, but not the larger. Getting oxygen and using my existing propane tanks would be easier. I'm an engineers that likes to fix stuff. I can't justify spending too much just to play around.
@@briancarpenter8297 If you do get a set, you might find it less expensive to buy a basic acetylene kit, then add the propane tips, the acetylene is the same fitting as the propane.
No it will not work, I have even tried similar many years ago, filling with sand is not good either, best is to put a mandrel inside the tube at the bend point.
Propane can't get as hot as acetylene because it has more hydrogen. While hydrogen produces more heat than carbon, it can't get as hot because the combustion product (H2+O =H2O water) doesn't form properly above 2000C/3600F. Acetylene has much more carbon than hydrogen and carbon exhaust (CO2) is much more stable. So acetylene has enough carbon to get past the point that hydrogen likes. But since it has little hydrogen, it doesn't produce as much heat.
"propane puts out more heat.. acetylene is hotter..." What? I am confused... Then "with the price of acetylene is going up we may end up using less and less with propane". Now I'm more confused!
I heard that too, I meant to say "We may be doing less and less with acetylene". Propane puts out more BTU s /Cubic Foot, but at a lower peak temperature.
This is one of the most refreshing machining channels I have seen in a minute. Old boy knows his stuff.
Learned something today. Never really realized the benefit of propane fuel, I just figured people really used it because it's more easily available/cheaper. Only need to hear once that it's just more heat overall, and it clicked in my brain. Even in the "simpler" jobs, there is still so much to learn. Got to love low volume job shop work, keeps a man sane because it keeps him on his toes.
It's important to remember that the tips are different. I believe you can get acetylene tips to work with propane, but it's not worth bothering with afaik.
@mrklean93 Glad you learned something. If I remember correctly John told me he has a propane tip that is rated for ~500,000 BTU/hr. It's some serious heat!
-Cameraman
Good point about needing to allow enough room for the galvanized coating on the threads so that the nuts will thread on.
I bought a lot of galvanized 1/4-20 carriage bolts from Home Depot for a project and it was impossible to screw the nuts on (not galvanized nuts) until I took the time to run a die down each one. Was a lot of time consuming work.
Love using that split nut welded to a plate to trap the rod by the threaded section.
Thanks! It worked quite well.
Yes ingenious, one to remember
You can also heat the threads with a torch and wire brush the excess galvanizing off.
If the threads don't need galvanized you can brush on a product (I believe it is galvstop) that keeps the galvanize from the parts that you don't want the galvanizing to stick to.
Quite the ROSE BUD!!!!😉
Have made alot 2" nf bolts on a pipe threader.
This will do just fine for holding the pieces of my exhaust together.
Interesting technique. I've avoided getting an acetylene setup, but I'll have to look into a propane torch setup.
What has been the deterrent to acetylene?
@@HOWEES mostly the cost of buying tanks and getting them filled/exchanged. My local welding shop can fill the small tanks, but not the larger. Getting oxygen and using my existing propane tanks would be easier. I'm an engineers that likes to fix stuff. I can't justify spending too much just to play around.
@@briancarpenter8297 If you do get a set, you might find it less expensive to buy a basic acetylene kit, then add the propane tips, the acetylene is the same fitting as the propane.
Could you do that with round tubing and still keep its shape without distorting the tubing inside? Awesome work men.
No it will not work, I have even tried similar many years ago, filling with sand is not good either, best is to put a mandrel inside the tube at the bend point.
@@HOWEES thank you and figured so.
Propane can't get as hot as acetylene because it has more hydrogen. While hydrogen produces more heat than carbon, it can't get as hot because the combustion product (H2+O =H2O water) doesn't form properly above 2000C/3600F. Acetylene has much more carbon than hydrogen and carbon exhaust (CO2) is much more stable. So acetylene has enough carbon to get past the point that hydrogen likes. But since it has little hydrogen, it doesn't produce as much heat.
Now that’s a torch 😳 too long and the table would be glowing
I Dunno, from the perspective that John's looking at it, it's more like an "n" bolt
How do you determine the length of rod needed for a specific radius and length of the straight legs?
if the rod is small (1/2" or less) go by the inside of the bend, if larger go by the middle, cut and bend a test piece, then modify as needed.
Where in Ohio are sending these??
"propane puts out more heat.. acetylene is hotter..." What? I am confused... Then "with the price of acetylene is going up we may end up using less and less with propane". Now I'm more confused!
I heard that too, I meant to say "We may be doing less and less with acetylene". Propane puts out more BTU s /Cubic Foot, but at a lower peak temperature.
Heat transferred = total energy. Peak temperature is different than energy transferred.