How many use propane and map gas? How much better is map? Is it always better? Is map sometimes too much heat? I sometimes need to bend something and the blue bottle is not making enough heat so I might try some MAP. What is the claimed temp difference? Thanks.
Map is hotter. I think it is better for all around use (for small items).
82 degrees outside here today and I froze the bottom of the propane tank. I was heating steel to the point of forging and had the option of melting bronze. Used correctly propane can deliver heat.
I am a plumber and use MAPP gas in tight spaces where I can not bring an acetylene bottle. Much more heat than propane. I also use it in my shop to bend small pieces of metal, heat treat parts and springs, etc. Even do some silver solder work.
Chadwick: are you using the small blue bottles of propane or the large grey tank of propane ?
I had to change from mapp to propalene because my supplier can't get mapp anymore. I am surprised that you can still get it. Propane is not as hot but I believe it is cheaper and more available. Mapp and propalene are about the same.
Chadwick: Are you using some type of blower/fan assembly? Sounds like you have a propane forge? Thanks
A simple air mattress compressor plumbed into a piece of inch and a half pvc with valve. From there into galvanized pipe with a t with one end reduced to take a 3/8 fitting for propane. Turn the fan on toss in some fire (lighter fluid on anything works well) and open up the propane tank. With the proper crucible I can melt about 20 pounds of bronze or brass. I have a larger crucible but it doesn't fit inside this one.
I also substitute propane for acetylene so I can use it in my living room without the black smoke. Works well for most everything, I did have to switch back to acetylene for cutting 1/2 inch steel plate but that has been it.
Needless to say I have a few bbq bottles around