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Old 08-17-2011, 03:58 PM   #2161
Fe Man
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Originally Posted by LarryGee View Post
I have never welded anything and thought I would like to learn how. Bought a cheapo 80 amp dc arc welder at harbor freight. Won't do aluminum but will do steel. Says it will do up 1/4 plates ( doesn't seem that thick to me ).

Anyway, just really enjoyed following this thread. I now realize that I should use my welder as a boat anchor and start all over.

But, I will wait. I can't even figure out how to position two pieces together to form a right angle and stay put while I try to lay down a bead !!! I don't think I should try and hold one side with my left hand while guiding the rod with my right....bad idea.

I will check out the Lincoln learning link and see how it goes from there.

Go Larry!
Lots of online tutorials and fabrication forums just waiting to help you...
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Old 08-17-2011, 07:11 PM   #2162
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OK. So, I have to weld a steel plate to cap the opening of this motorcycle tire changer clamp. The opening is about 1 1/4 wide by 1 3/4 long. I purchased a length of steel that I can cut to size.

My questions are:

1) I keep reading that everything needs to be clean, clean, cleaned before welding. Does that mean that I need to remove the paint from the material before I weld the cap to it?

2) I guess this weld is called a "fillet" weld, where I am filling in the edges together? If so, any tips on how to secure the plate to the cap opening so I can run a bead? Do I just do a spot weld on the far end just to hold it in place?

3) Any sugggestions?
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Old 08-17-2011, 07:19 PM   #2163
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Originally Posted by LarryGee View Post
OK. So, I have to weld a steel plate to cap the opening of this motorcycle tire changer clamp. The opening is about 1 1/4 wide by 1 3/4 long. I purchased a length of steel that I can cut to size.

My questions are:

1) I keep reading that everything needs to be clean, clean, cleaned before welding. Does that mean that I need to remove the paint from the material before I weld the cap to it?

2) I guess this weld is called a "fillet" weld, where I am filling in the edges together? If so, any tips on how to secure the plate to the cap opening so I can run a bead? Do I just do a spot weld on the far end just to hold it in place?

3) Any sugggestions?
yep, needs to be clean and definitely no paint, get a 4" angle grinder and a cup brush for it and you can clean the steel up and remove the paint quickly....also get some welding magnets to hold things steady until you can do a tack or two



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Old 08-17-2011, 07:42 PM   #2164
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yep, needs to be clean and definitely no paint, get a 4" angle grinder and a cup brush for it and you can clean the steel up and remove the paint quickly....also get some welding magnets to hold things steady until you can do a tack or two


Be sure to have a good soild grip on the grinder and expecting it to 'kik back' cause it will.
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Old 08-17-2011, 07:54 PM   #2165
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Not only that but they often throw off wire bristles. Be sure to wear a leather apron, gloves, and most importantly eye protection.

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Be sure to have a good soild grip on the grinder and expecting it to 'kik back' cause it will.
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Old 08-17-2011, 08:46 PM   #2166
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Not only that but they often throw off wire bristles. Be sure to wear a leather apron, gloves, and most importantly eye protection.
and never use one handed, I foolishly tried that and wirebrushed the other gloveless hand I was holding the work with and got a very nasty wound....have caught a few thrown bristles below neck level (they will go through jeans) and that was not too bad but I always wear a full face shield
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Old 08-17-2011, 08:49 PM   #2167
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And when you're using a grinding wheel........... becareful where all them sparks go cause they will start a fire.
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Old 08-17-2011, 08:56 PM   #2168
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Originally Posted by LarryGee View Post
OK. So, I have to weld a steel plate to cap the opening of this motorcycle tire changer clamp. The opening is about 1 1/4 wide by 1 3/4 long. I purchased a length of steel that I can cut to size.

My questions are:

1) I keep reading that everything needs to be clean, clean, cleaned before welding. Does that mean that I need to remove the paint from the material before I weld the cap to it?

2) I guess this weld is called a "fillet" weld, where I am filling in the edges together? If so, any tips on how to secure the plate to the cap opening so I can run a bead? Do I just do a spot weld on the far end just to hold it in place?

3) Any sugggestions?

Or:







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Old 08-17-2011, 09:31 PM   #2169
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Or:

Those numbers have to be off by at least a factor of 10. Did you perhaps mean cm?
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Old 08-18-2011, 05:30 AM   #2170
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No one can weld "through " paint. WHATEVER it takes to remove the paint is fine. Sandpaper, a file, grinder, or sometimes I burn it off with a torch then wire brush. A couple of small tacks then let er have it. If your piece fits properly then the joint will be called an outside corner weld. Show pics when done please.

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Old 08-18-2011, 05:34 AM   #2171
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Originally Posted by LarryGee View Post
OK. So, I have to weld a steel plate to cap the opening of this motorcycle tire changer clamp. The opening is about 1 1/4 wide by 1 3/4 long. I purchased a length of steel that I can cut to size.

My questions are:

1) I keep reading that everything needs to be clean, clean, cleaned before welding. Does that mean that I need to remove the paint from the material before I weld the cap to it?
Yes and no, If you don't care how the weld turns out and it is not structural then you only need to take a little paint off if you are using a Mig or stick welder. If you want a nice looking weld, it has to be able to hold a load reliably or you want to TIG weld it, it needs to be very clean.
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Old 08-18-2011, 06:26 AM   #2172
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Those numbers have to be off by at least a factor of 10. Did you perhaps mean cm?
, uh huh.

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Old 08-18-2011, 12:25 PM   #2173
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A couple of small tacks then let er have it. If your piece fits properly then the joint will be called an outside corner weld. Show pics when done please.

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Why do I get the feeling that my welding skills are going to wind up being the subject of the days entertainment ?
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Old 08-18-2011, 12:27 PM   #2174
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Or:






Jim
I saw this but I don't have the top cap into which I can insert the screw that holds the plastic piece in place. That's why I'm having to do this welding thing...
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Old 08-18-2011, 12:29 PM   #2175
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yep, needs to be clean and definitely no paint, get a 4" angle grinder and a cup brush for it and you can clean the steel up and remove the paint quickly....also get some welding magnets to hold things steady until you can do a tack or two



+ 1 on the illustration. Thanks,

By the way, I'm confused. Does the ground cable that comes from the welder have to be attached to the actual piece i am welding or can I attach it to ANY metal surface?
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