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View Full Version : New to welding,Brads way is the only thing I can get to work!



wiretie
10-31-2009, 08:24 PM
I've been playing with this welding stuff and only the suggestions Brad makes seem to work well! Only 6013 3/32" rods, 1/16" does not work as well for me on 1/16 plate. I set the amperage as high as I can travel in about 8 seconds and the welds are pretty good according to a machinist friend of mine I've tested them and they all bend over backwards without breaking. I guess what I'm trying to say is read Brads tutorial. It made the whole learning process seem fairly simple to me. Also I don't know if it matters but I'm using an AC Hobart welder which is what I gather Brad uses. I'm still not a welder but it is seeming to all fall into place thanks to his guidance!

darwin-t
10-31-2009, 09:58 PM
Are you talking about the tutorial at chopzone.com? I didn't realize that Brad wrote that. Or are you talking about something different?

I agree that the one at chopzone is very good.

wiretie
10-31-2009, 10:33 PM
Yeah, that's the one. I guess I just assumed Brad wrote it, a helmet with his name in the photo and all. Excellent article, the sticky one in the welding section of this forum. I know it must be good because it's short and it doesn't tell me to try anything that doesn't work. I tried other stuff and it didn't work.

darwin-t
10-31-2009, 11:00 PM
You aren't the first person here to refer to "Brad's tutorial". I must just be too dense to have figured it out on my own.

I wish someone would do one that good for oxyacetylene welding.

I've done both and I have found that 1/16 rods work better for me while arc welding.

I think I do better with OA though. Things happen slower and I can manipulate things better. It is costlier, though. Filling those tanks cost a lot more than welding rods for arc welders.

I still have a long way to go before I can call my welding "good"

P.S. If you can afford it, check into an auto darkening welding helmet. It's nice to be able to actually SEE what you're doing before you strike an arc.

trikeman
10-31-2009, 11:44 PM
You aren't the first person here to refer to "Brad's tutorial". I must just be too dense to have figured it out on my own.

I wish someone would do one that good for oxyacetylene welding.

.

Darwin - if you want the best book that has been written on O/A pick up a copy of the highly recommended book (by those who still practice the black art of O/A welding) called, "The Oxy-Acetylene Handbook," by the Linde Division of Union Carbide. It has been out of print for many years, but is usually available used on Amazon. Mine is the second edition, copyright 1943, and as I recall I paid less than $10 for it.

The golden age of O/A welding was during the 1920s to 1940s. Most of the best books and torches were created then.

I also recommend the Wall Mountain videos on oxy-acetylene welding. You can pick one up at Northern Tool and other places for $24.95.

http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200310394_200310394

fultondp
11-01-2009, 01:43 AM
I second Trikeman's recommendations, but would add that if you like OA welding, you might want to try brazing for your bike builds. For the thinwall bike work we are doing here, it is just as strong, cheaper, and more forgiving for beginners, you can take all the time you need. I learned to braze before I learned to MIG, and still like it for doing the little fiddly bits like brake and cable bosses, or quicky one time repairs. One warning though, you should get a bigger torch than the ones they sell at Home Depot or Harbor Freight, it is difficult to get enough heat all the way around the bigger tubing diameters with those little torches, and oxygen is expensive when you buy it in those disposable bottles they sell.

Darren

trikeman
11-01-2009, 07:35 AM
and I second what Darren said about brazing. For most beginners it is easier, although I don't always find it so (perhaps because I learned to weld first I sometimes like to get the metal too hot). I also assume that he is referring to the small torches at HD and HF with the throw away bottles, and not the larger HF torch sets they sell designed to hook up to the larger oxy-acetylene bottles like the ones on this page.

http://www.bikewebsite.com/weldequipment.htm

My Smith AW1(A) torches are about the same size as those, and will take a large enough tip to melt anything I have ever seen on a bicycle, although most bicycle braziers don't use over a size 3 or 5 Victor equivalent tip for all the brazing they do. I considered the HF set, but its pretty easy to buy an antique Smith or other name brand "airline" torch set for the same or less on eBay, and I prefer name brand torches and regulators. I love HF stuff and others have said these torch sets are as good as a Victor and other name brands, but on something like O/A that can pretty easily maim or kill me, I just feel better with name brands. These old torches (Meco Aviator, Meco Aviator Jet, Oxweld W-29 , Smith #2, Smith Airline AW1, Meco "N", Harris # 15 , Dayton Aircrafter) are called "airline" torches because they were designed to weld full size airplane structures, back in the heyday, bu they are not the huge torches most people buy today that are designed mostly to cut thick steel and will go through a bottle of oxygen or acetylene in the blink of an eye.

http://bikesmithdesign.com/Welding/Tips.html

trikeman
11-01-2009, 08:03 AM
By the way, this is the post that first got me started looking for a Smith AW1A to braze bicycles with, so I guess both Rohorn and ADC had a hand it it, although the guys on metalmeet (who weld a lot of car body thin stuff) helped me along too. As I said in a post yesterday, it really is kind of s small world when it comes to O/A welding and brazing on tubing structures (airplanes and bikes) It took me over a year to assemble my full kit, since I waited for good deals and good equipment on eBay and Craigslist.

http://www.bentrideronline.com/messageboard/showthread.php?t=9622

darwin-t
11-01-2009, 08:11 AM
Darwin - if you want the best book that has been written on O/A pick up a copy of the highly recommended book (by those who still practice the black art of O/A welding) called, "The Oxy-Acetylene Handbook," by the Linde Division of Union Carbide. It has been out of print for many years, but is usually available used on Amazon. Mine is the second edition, copyright 1943, and as I recall I paid less than $10 for it.

The golden age of O/A welding was during the 1920s to 1940s. Most of the best books and torches were created then.

I also recommend the Wall Mountain videos on oxy-acetylene welding. You can pick one up at Northern Tool and other places for $24.95.

http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200310394_200310394

I found a copy of the book for $11.99 with shipping on amazon. Thanks for the recommendation.

I'll order the video as soon as possible.

darwin-t
11-01-2009, 08:45 AM
My torch is a Purox W200, which is described as useful for light welding. The welding heads I have are a no. 15 for metals 1/16 to 1/8 and a no. 9 for metals 1/16 to 1/8. I guess Prest-O-Lite took over the Purox brand.

trikeman
11-01-2009, 04:01 PM
My torch is a Purox W200, which is described as useful for light welding. The welding heads I have are a no. 15 for metals 1/16 to 1/8 and a no. 9 for metals 1/16 to 1/8. I guess Prest-O-Lite took over the Purox brand.

Sounds to me like you are all set with the torch then. Most folks I have talked to say they might go one tip larger for brazing than they do for welding, but you have that covered with your 15 and 9 tip.

On the book, the Second Edition is better than the third if you can get the older one. They apparently dumbed it down some as they moved up in time. In reality about all you need to know about O/A welding and brazing is contained in the web page I linked. What is mostly missing is the practice and more practice.

I like videos because I can see really good pictures of what the puddle is supposed to look like under various conditions, and they give some tips on setting up (you will recognize the advice I gave you on popping in the Wall Mountain Video, since he spends some time explaining it. Unfortunately, the video doesn't cover brazing, but the book does. About the only videos I have seen on brazing are the ones George Goehl does in his videos. You might check out his youtube videos on brazing. I have not seen George's videos, but hear from some welders on the Hobart Forum that they are excellent. George is mostly interested in sculpture, but the steel he welds is thicker than bike steel, so the lessons ought to be good. There are previews of his videos on his website below.

http://www.gsegmedia.com/videos/oxy%20ace%20brazing/index/index.htm

trikeman
11-01-2009, 04:33 PM
You can also rent a lot of the videos here:

http://smartflix.com/store/category/27/Welding

fultondp
11-01-2009, 05:01 PM
I also assume that he is referring to the small torches at HD and HF with the throw away bottles, and not the larger HF torch sets they sell [/URL]

You are correct, I'm referring to the little torch setup for the disposable bottles. I like it fine for doing bosses, but it is difficult to get a whole tube hot enough for joints. I haven't tried the bigger OA setup HF sells, so I can't comment on how well they do.

Darren

darwin-t
11-01-2009, 10:33 PM
You can also rent a lot of the videos here:

http://smartflix.com/store/category/27/Welding

Thanks for that. I found a video for arc welding tips and tricks at the library.I'm renting the OA one.

trikeman
11-09-2009, 07:54 AM
If you have ever wanted to pick up a HF oxy-acetylene set (the one reviewed on the website in a post above), now is the time. They have the entire kit on sale for $89 for the next 4 days, with a coupon. I also have a coupon good for another 15% off today. That brings the total to $75 for the torch kit including the gauges.

http://www.harborfreightusa.com/usa/common/displayCoupon.do?week=4609&campaign=RetailA&page=4609_retailA.html&r=6607_716192&cust=99999999999&keycode=0000

trikeman
11-09-2009, 08:15 AM
If you haven't seen it already, here is a good youtube video of Freddy reviewing the HF oxy-acetylene set.

http://www.youtube.com/watch?v=brhsHH_yqHk&feature=PlayList&p=AAEA873DAAC24380&index=0&playnext=1

http://www.youtube.com/watch?v=EpaFxai_rsg