Why is this?:
When I weld at night school And at my shop on welding the tables, I sometimes get a slight zap while resting my Protected arm on the table. It doesn't happen everytime but I'm just wondering Why it happens and How do I prevent it?
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Why is this?:
When I weld at night school And at my shop on welding the tables, I sometimes get a slight zap while resting my Protected arm on the table. It doesn't happen everytime but I'm just wondering Why it happens and How do I prevent it?
Put your ground clamp as close as possible to your work piece and try not to position yourself where current can pass through you.Quote:
Originally Posted by CGCINC
lol.... Guess that makes sense! My instructor taught me to just clamp it to the table out of the way....
Are you using a high frequency arc starter such as for TIG, or are you scratch starting TIG or stick?
You may need to look at a better glove for the welding hand, and better sleeves for the arm.
Regardless, a better "picture" of the situation will help us make a better determination of what's going on.
Yes... Tig, HF start for both welders and running in AC.Quote:
Originally Posted by parkour
I ditched the basic jacket they give you at school and bought a nice heavy jacket. The glove are Revco Tig gloves, pretty thick.
I have been wearing long sleeve shirts and also have the welding jacket on. I just feel a slight "zap".
I ground the table to the side and have been mostly practicing on Aluminum.
The welding table I built at my shop has a ground tab under the side of the table to keep the clamp out of my work area...BUT, I was also going on the thought that you just ground the table to the side. Shouldn't a "teacher" know these things!? lol
Are you on concrete when you get zapped? Also, are you perspiring in the jacket or gloves? If you give a path, does not matter where the clamp is, it will use you as the path.
http://www.everlastgenerators.com/fo...ighlight=sweat
Yes, I am on concrete both places.
Not sweating at all.
I've seen people ground their table using a short wire... Their thinking is electric will take the shortest path!?!
I would try putting the ground on the other side of the table to where your welding so the current is going towards the other side so it would then make it very hard to make you a quicker path to the machine than through the table
These are pics of where my ground is located.
I am left handed so my torch is on the left as well so I don't get between positive and negative.
http://i33.photobucket.com/albums/d8...ust/MISC/4.jpg
http://i33.photobucket.com/albums/d8...t/MISC/3-1.jpg
http://i33.photobucket.com/albums/d8...t/MISC/2-1.jpg
Very nice table, the difference beyween yours and mine would the castors, mine are cast iron, yours are composite, isolating you from the concrete, perhaps if you hung a small chain to the floor some of the build up in the table could be sent through the chain instead of you.
Not everyone has the ZAP problem, trick is to find out what is different about your setup from everybody elses.
Hope this helps.
As part of the process of elimination, try making sure that the stool is well insulated from the floor.
Never thought about the castors but that's a good idea! Thanks geezer
Just thought of this..... The table at school is just pipe, no castors, and it shocks me more than my table.
Just curious, what size argon tank
is that in the picture?
heres a thought, if your getting shocked at BOTH school and work, then it stands to reason that its not really the table, and more or less something your doing. as far as ive read, your the only variable thats in both cases. maybe your just prone to getting shocked. like how some people kill watches, there electrically charged.
It is a 300Quote:
Originally Posted by brianscott
Did you have to do a five year lease and whats it cost to fill ?Quote:
Originally Posted by CGCINC
I did a lifetime lease for $175 and it cost $75 to refill. I had a 125cf bottle and it went quick so I upgradedQuote:
Originally Posted by zoama585
On the shocking issue. The chain idea might work as Geezer mentioned, but DO NOT ground the table out though. The "return" clamp ("work" clamp) is not to be grounded. The chain or some resistor value might route it around you as the table is floating, somehow it's using you for a path.
On the bottles. I filled up a 125 (I hate those things) yesterday. $37 after sales tax. That why I hate them $$$. The 250/300 are $75 here for me to fill. All owner bottles. But for $175 lifetime, that is a good deal.
Prax said they would trade my last 2-125's for a 250, but they are both never empty at the same time to trade them out and at $40 a fill I am not dumping the gas. Only use them for TIG.
What I don't understand is why Praxair will
only allow me to have a 150 bottle. They
told me I'm not allowed to have a 300.
Is there a "secret" club or something I
need to belong to?
No you can have a 250+ if you have a welding account on file with them and lease it (or already have one). But if you hunt around, I have a few 250/300's I bought off Craigslist. Get them filled no problem and even one says owner on the ring.Quote:
Originally Posted by brianscott
They all seem to look at 150/125 as owner bottles in general (all the places I have been in), larger are commercial for some reason. If you have one they will fill it, OR they will lease you one. Some places will sell you one, but when you you hear the price you would probably pass on it anyway. :D
I went in the new Airgas two days ago (opened in May, 200 feet from WSI; DUMB). Was very disappointed. It was almost a mirror of PraxAir. I would say Prax is actually better, did I say that...
No wonder the little and smaller guys do so much better. They did not even get up from there seats. The argon was 1 dollar more at WSI and I would have paid $5 more just for the service and personalities.
I bought an 80 Ar from airgas today, biggest they would sell, $175. full. I'm getting used to getting ripped off. They said the gas was free in it. I said Duh-okay..
I had been dealing with national/airgas and didn't like their service at all. They wouldn't lease a large bottle to me. So today I called another shop who said I could get any size I want with a 99 year lease. It's $280 for a 381 ft3 bottle of C25 and $61 for refills.
The C25 is for my new I-MIG 250p and I'll trade in my 160 argon bottle for a 335 when it's empty. I know those prices are higher than some people pay but it's a whole lot better than the local national/airgas.
Jack98, I walked in my first AirGas a couple weeks ago (new one local here now). I would give them a D (store was pretty inside so no F). I feel for you if that is all you have in your area. I am sure not all Air Gas locations are ran the same, but the one here, give me a break... And 200 feet from WSI who I have used for many years (and everyone I know no less), they are looking to close down in a year for sure. I will never step foot in there again, but I had to look. I would never think someone could make PraxAir look good.Quote:
Originally Posted by Jake98
Best to look for a small local guy if you can find one, they are not everywhere. That's normally the best as they try harder. We have a Welder Services Inc, they are more of a mid size WS and it's a shame there aren't more of them. The guys there are great. Straight shooters, but I prefer that myself.
Also, the above comments are related to my area and my experience, I know others are going to have great guys at there locations, just stating what we have here so Jake98 knows it's not him or his area.
An 80 is pretty small for TIG, it will go fast.
That is not a bad deal really, I pay about $70 for 250's. I think you are going the right direction. Only problem, my bigger than 300 tank is well over 160lbs+ empty, so get a dolly or service deal with them.Quote:
Originally Posted by zoama585
It's a 300 size (T) they just put 381 ft3 of c25 in them. it's 335 ft3 for pure argon. Anyway I'm 6'3" 312lb and could carry one in each hand if they had a handle. :DQuote:
Originally Posted by everlastsupport
I picked up my bottle today at welders supply house... these guys are much easier to deal with than national/airgas. They even gave me a free renewal when my 99 year lease is up.
I'm waiting on one more part to come in and I can try out my new I-MIG 250p.
You know, jerky, you may be on to something there.Quote:
Originally Posted by jerky
I get that little zap (kind of like a tingle in my skin, not enough to hurt, just to tickle a little) when i'm welding and rest anything other than a THICKLY gloved hand on the grounded work area. It happens when i'm well insulated from the floor, or not, whether i ground the table, the part directly, or sitting or standing at a fixture any kind of shoe (thick soles, thin soles) or if i'm wearing my welding jacket or not, or just a long sleeve hoodie. And, it happens with different welders: miller, lincoln, everlast... ac/dc, pulsed... everything.
I am one of those 'electrically charged' people. I can kill a 'lifetime' watch battery in about a week if i wear it on bare skin, and i have to use a phone holster that clips on my belt and holds the phone away from me, otherwise it'll get toasted in a couple of months. I spend a fortune in batteries...
... and oddly enough, i build up 'static charge' all the time.
I can't help but think that my electromagnetic field may be at a different frequency than the welders' and i get a sort of 'feedback' when i become part of the circuit.
... we should start a study on it, and apply for grants. We'll need lots of welders and materials to conduct our study. We can call it "Effects of Human Electromagnetic Interference in Welding Practices"... and then add "... and it's effects on global warming." We'll get millions.
Yow Hope you weren't the runt of the litter must put your parents in the poor house feeding you lol.Quote:
Originally Posted by zoama585
I was the only boy out of 4. My mother was 5'7" and my father 5'9". I kept growing until age 23... food was cheap when I was a kid and all didn't come from a grocer.Quote:
Originally Posted by 67cudafb