Oxy Fuel Brazing: Heat Manipulation Exercise

[@Quadflash]

The Master, Bob Moffat, showing how heat control is done. Beautiful.

[@nigelkingsley-lewis534]

When I went to college to first learn welding, I was taught gas welding first. The instructor said if you can gas weld any thickness of metal you will be able to do any other type of welding.

[@ortho4542]

I can honestly say this seems accurate.

[@k.c.putnam7333]

Thanks! This is a great video. As a metal artist, you are not only challenging me to expand my scope of work, but reinforcing much of what I have been doing. Being self-taught, many days I come home and say "Well I learned something today! I'm not quite sure what, but it will come to me." -and it does, a day or week later, but it does. This usually follows a frustrating day of mistakes and failures. I learned to texture surfaces with MIG welder splatter, and then learned it is even better when followed up with my oxy-acetylene flame. This opens up even more possibilities! The biggest lesson I have learned is that it is all about temperature control and playing! I just wish I was both younger and nearer. I would love to "go to school" with you!

[@victoryfirst2878]

So nice to see you still doing oxy acetylene brazing. Keep it up.

[@leonardpearlman4017]

Speaking of eye protection: It's not usually known in the welding field, but there's a secret in the glassblowing sector that can work here. DIDYMIUM lenses (usually some kind of clip-ons or a goggle or a face shield). All this brazing has a sodium flare, a bright yellow light that comes from heating up the sodium in your flux. The didymium glass or plastic removes that sodium line from the light, and allows you to see what you're doing. VERY expensive, naturally. Makes a huge difference, though.

[@tzmetalsmith]

Who said welding isn't an art form? Nice work and thanks for showing us some great ideas :) By the way, we are all always learning, including Mr. Tig; so it's great to see other craftsmen be the source of new ideas, great video!

[@quietrioter]

Rest in peace Mr Tig. Glad you are welding up the Pearly Gates

[@ChrisB257]

Brilliant exercise -- did wonder too re no filter goggles being used. Started on gas welding long ago... still keep small bottles handy.

[@hendonburgism]

Awesome exercise! If anyone wanted to take this to the next level, it would probably pay off. As a grower of tiny trees in trays, you need taper, from the roots, trunk and tips of branches, everything needs to taper evenly, and don't allow more than two branches to come from one node, you can even keep multiplying the branches that branch off of those branches, over and over, getting smaller and tapering evenly (refinement). Metal bonsai trees are something that could potentially be worth a lot, however lucrative. That community already pays gobs just for annealed copper and aluminum wire.

[@georgecurtis6463]

I started with oxy acet and stick at the same time. To this day, over 50 years later, I still use the same thing. Course I never had to weld massive amounts of metal that would require tight or might. But stick or gas always got the job done for me.

[@Gears.and.Gadgets]

Wow that brings back memories. I learned gas welding back in high school. Thanks for the video.

[@mikeysgarage3697]

My first welding experience was also gas welding, just a few hours a week as an "interest keeper" during my auto mechanics course at college about 20 years ago, wish they'd given me a certificate for that.

[@steelforge08]

yup my school still teaches gass welding and brazing, we have to do both before we start tig. I bet this exercise can be done with tig too I'm gunna try it both ways should be interesting

[@leonardpearlman4017]

It could be TIG with stainless steel!

[@leonardpearlman4017]

Better yet, Aluminum with the AC... I've done something inferior to this as an exercise, just make a puddle and put some filler and stop. Then do another on top, so it builds up and up. You can do several on one plate if the heat builds up. So eventually there are some little towers standing up from the plate. This "tree" looks a lot more interesting, and you have all different angles to work on.

[@lisalovelylpa]

Love it … I think I sold on trying metals and torches in my art. Thanks !

[@leonardpearlman4017]

One of the old welding books (might be from Craftsman) has a few pages at the very end about hobby and artistic aspects of welding. One picture is of a bunch of little models made by a torch and plain iron wire. You can't see them very well in the picture, but they look pretty intricate, there are lots of them, things like a horse pulling a wagon. The overall thing must be oxidized... but under the point of the flame the iron seems to be cleaned, oxides reduced back to iron? SO, it looks like this exercise might work to some extent with just iron wire, RG45 or something. Of course the product will be black and scaled, but maybe it could be pickled or bead-blasted? There are some books about Direct Metal Sculpture and Welded Sculpture that show stuff made of steel (and other metals) just welded and welded. This seems like something that might interest students!

[@kenbode8806]

Amazing exercise!!! Question when welding 8x8 wire mesh screen to carbon Steel would this be a option? What would be the best option for this application

[@jarodwarren3445]

JB weld

[@ypaulbrown]

what thickness is the screen? and what material

[@MrKidkiller159]

when repairing used exhaust pipes gas welding seems to be the best way to join the two pieces together out in the field or in the shop.

[@martinschuhmacher6885]

so cool OxyAcy is still teached. Its old but so versatile and I like that kind of weldung best

[@RickRose]

Thanks for this idea--I've bought an o/a set and want to learn to use it. Great exercise.

[@leonardpearlman4017]

Beautiful! I want to do this, get students to do it. We can weld brass, and also braze it. I got some practice material from a lock shop once, they had a box of bad keys... you can weld two keys together for example. That was fun, this looks like more fun.

[@leonardpearlman4017]

Three years later: Got lost there, I was once thinking that the keys could be the leaves on a kind of tree. I never have done this exercise, I still want to!

[@pizzaWelder]

I'd love to try this with TIG.

[@ArisTheArtificerVOD]

+Pizza Welder tried it. and trust me. it was a little painfull

[@drumtwo4seven]

Seems like a great exercise... How come no #5 lens???

[@52Ford]

I guess some people are into seeing spots. At least they have some sort of eye pro on.

[@ddee9165]

Apparently shade 5 goggles, which are generally used for medium duty oxy-acetylene welding and brazing, still allow 2.5% of Infrared Radiation to pass through. This is according to a chart I seen on allowable transmission values of welding filters. Seems like a lot for goggles designed to protect from IR radiation.

[@matthewbrickman6952]

Can you do a thick plate flat multi pass brazing weld on video?

[@tomherd4179]

When Bob mentioned aluminum castings using brass rod/filler, what (if any) flux coating was used?

[@Wjones450]

my exact thought

[@fm3arthur]

I tell people that TIG welding is like gas welding with electricity and I teach gas first then TIG

[@cameronbartlett856]

@Dalton Bousum The thing is, that's the part people have the hardest time with. What makes tig hard is what makes acetylene welding hard so if you can get that down then everything else is trivial.

[@johnhays8708]

I also started out with OA...start with the basics.

[@maverickweldiing8621]

Now that is cool Great talent

[@larrysperling8801]

i could never braze or gas weld without dark glasses ,how do you do it?

[@ypaulbrown]

maybe his sensitivity to light is different than yours and maybe the video lights he is facing have have constricted his pupils so it does not seem as bright to him.

[@johnhagerty7998]

How do you not make bbs any tips

[@fredblair8694]

I'm 77 years old from England I learned to gas weld at a company called hiflex we manufactured high pressure hydraulic fittings 90 degree elbows they passed all the current factory standard pressure tests I moved from there to building racecar chassis and yes we brazed them the very same process can be seen on KZbin for ariel atom car from England 🇬🇧

[@teamsix7185]

No #5 eye protection?

[@VastCNC]

I like gas welding for the visibility of the puddle, but I hate the price of acetylene!

[@leonardpearlman4017]

Yeah, that's a problem! Historically acetylene was cheap, and people used to say that Oxygen plus Acetylene was still cheaper than Argon plus Electricity (for TIG). I'm not sure if that's true, now! In the older books you see acetylene generators that use Calcium Carbide, I think at that point you could use as much as you wanted, and people used to do very heavy work with torches. I think I could live without that!

[@Bigtwin88]

That was great......Thanks Don M.

[@huntinggamer100]

how could anyone weld with out eye protection? but this is an awesome idea

[@ypaulbrown]

easy, his pupils are constricted to start because of the video lights and he may not be as sensitive to the light as you are

[@jonwhite2706]

how many rods in that tree

[@tomknox8227]

Very cool!

[@benhoward8910]

I've seen poeple that can weld and cut with torch without anything, I don't know how cuz I can't see at all. I always use my welding hood with the auto dark turned off.

[@ypaulbrown]

good idea...

[@METALMUNCHERS77]

Why is your name mr tig when you have others show how to do some skill welding such as pipe and videos as this wouldn't you be able to show everything and how to do it? Just curious

[@redkachowski]

yeah i like bob moffet a lot better than mr tig

[@jesseacker6278]

BIG HUNk darn right

[@mitchellunger9005]

Bob Moffat is a certified badass

[@user-tp8qn3uk9v]

We'll it's not tig so........

[@johnpossum556]

He's his boss. I hope they're paying moffat for these YT vids. Great stuff!!! I can see him getting suckered in to do them to bring in students. He should get additional pay.

[@calos619213]

Is bob sitting down or is mr tig a giant?

[@ypaulbrown]

they are both Giants in the Welding Field

[@MR-nl8xr]

Who cares if it looks good or not. As long as it gets the job done, you did the to best of your ability, and it was enough to keep you on board with a raise at the end of the year then let it be. Life's too short to perfectionalize everything at work.

[@bryanst.martin7134]

"Heat manipulation exercise". Are you sure you didn't get that from "couple's therapy?" I'm pretty sure that was chapter 3. ;-)

[@ethanschulz2067]

No shade 5 or darker glasses teach safety also not just welding

[@jarodwarren3445]

U don't need dark glasses for that shit...don't be a dumb ass

[@ethanschulz2067]

@@jarodwarren3445 if you don't want to wear it that's up to you. But OSHA requires minimum of shade 3, and AWS recommends shade 3-4. So do what you want but I'm not the dumbass.

[@thelikebutton4405]

POW