[AT] OT MAPP gas for silver brazing

[Dave Merchant]

That wiki article is pretty ambiguous about the fake MAPP that you buy 
now.  How does the fake compare with the original MAPP?

Dave Merchant
https://www.youtube.com/user/SteamCrane

On 7/3/2019 10:23 AM, Jack wrote:
> https://en.wikipedia.org/wiki/MAPP_gas
>
> [Jack] 20 years ago I was quoting some work where people would pack MAPP torches and gas cylinders in their toolboxes. Then go to remote job sites and silver braze O Ring Face Seal  (ORFS) flanges onto steel  hydraulic tubing. It took a lot of convincing but it worked great.
>
> [ Spencer Yost] I have had a lot of luck with MAPP torches. Much hotter than propane, and much safer and easier to use than oxy acetylene sets. If I remember correctly it’s heat content is similar to acetylene tho flame temperature is lower.  Or maybe that’s vice-versa.  I’m sure there are several folks on this list who know this type of information off the top of their heads and can chime in.
>
> If the metal is really huge then the MAPP torch might not be enough. But I can get some pretty big chunks of steel cherry red with MAPP.  My haywagon slip tube was the only project in recent memory that made me wish I had an oxy-acetylene outfit.
>
> https://www.truevalue.com/professional-on-demand-map-pro-torch
>
> [Dean VP Snohomish, WA 98290] What torch tips do you have available to you? It is incredibly hard to try to teach welding vs heating w/o melting via this forum. Isn't there someone that you could ask to help?
>
> [STEVE ALLEN] OK, per Dean's advice, I have gotten my hands on an acetylene torch, but I don't have any experience with one to speak of. I would appreciate any hints anyone can offer about technique for getting the bolts out.  I have watched a couple YouTube videos, but they are focused on cutting, and cutting is what I *don't* want to do ;-) Thanks for any pointers you might offer! The "original" Steve Allen
>
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