Dazed_Driver Banned Mod Moderator Location: John and Skyes Magic Love liar Join Date: 08/24/2007 Posts: 2,154 |
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NoCoast Grant Hughes Super Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
Clean, clean, clean. Especially if your welding aluminum. Closer fit the better too. Oh, and start going to yoga, especially if you ever envision trying to weld a jungle gym in 26 cubic feet, aka roll cages. Oh, and make sure you can get out once you've welded the next bar in. I've done that once, and thought I was going to have to dislocate something to get out.
Grant Hughes |
Doivi Clarkinen Banned Ultra Moderator Location: the end of the universe Join Date: 02/12/2006 Age: Possibly Wise Posts: 1,432 Rally Car: 1980 Opel Ascona B |
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PAddy Patrick McVeigh Senior Moderator Location: Toronto, ON Join Date: 12/21/2005 Age: Midlife Crisis Posts: 358 Rally Car: Student Loans |
You've got it backwards - so long as you saw a puddle and got some filler in it, you've probably got a reasonable weld. I'd walk on a ladder TIG-ed by a beginner but probably not one MIG-ed by an intermediate.
Ron Covell has a neat video on tig which covers a lot of the basics, but it sounds like you're beyond that now. Nothing but mindless repetition will help you improve now! If you have a pulser on yours, its handy to help you get some rhythym going, set somewhere around 1pps. I also like turning up the stereo for a beat to dip to. |
Dazed_Driver Banned Mod Moderator Location: John and Skyes Magic Love liar Join Date: 08/24/2007 Posts: 2,154 |
Yeah, the dynasty DX does have pulse mode. It was pretty crazy thinking about using a hand control, but having used it, its a lot easier then I remeber the foot control being!
Here's my latest weld. Its just some left over 1.5 x.095 roll cage tubing notched and welded. Welcome to the cult of JVL drink the koolaid or be banned. |
Dazed_Driver Banned Mod Moderator Location: John and Skyes Magic Love liar Join Date: 08/24/2007 Posts: 2,154 |
Yeah, the dynasty DX has pulse control. We got a CK torch with a 360 degree swivel head and a hand control. It was pretty crazy thinking about having to use the hand control, but its not bad at all!
Here's my latest weld Welcome to the cult of JVL drink the koolaid or be banned. |
Tim Taylor Tim Taylor Mega Moderator Location: Oakland, CA Join Date: 02/02/2007 Age: Midlife Crisis Posts: 622 Rally Car: Mazda 323 GTX |
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Dazed_Driver Banned Mod Moderator Location: John and Skyes Magic Love liar Join Date: 08/24/2007 Posts: 2,154 |
Wow, didnt know I double posted. And sorry about the pic quality. Thats my cellphone, im trying to find the manual for my Digital so I can make it Un-suck more. The flash is too light and reflects too much, and with out it its to dark and out of focus...
Welcome to the cult of JVL drink the koolaid or be banned. |
Dazed_Driver Banned Mod Moderator Location: John and Skyes Magic Love liar Join Date: 08/24/2007 Posts: 2,154 |
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Dazed_Driver Banned Mod Moderator Location: John and Skyes Magic Love liar Join Date: 08/24/2007 Posts: 2,154 |
Ok, I played around with pulse today. I really dont understand it. I tried it with high freq pulseing, and low. I did leave the fluctuation on 50% but i varied the high amps and the low amps.
Anyone help clue me in to this feature? All i did was get VERY annoyed at the buzzing noise. Welcome to the cult of JVL drink the koolaid or be banned. |
PAddy Patrick McVeigh Senior Moderator Location: Toronto, ON Join Date: 12/21/2005 Age: Midlife Crisis Posts: 358 Rally Car: Student Loans |
You can probably get by without pulsing while you learn the basics, as it may get in the way of learning some fundamentals.
That being said, pulsing lets you vary the current between two set points (peak/background) at a given frequency, and the time spent at each point need not be balanced. This can be used to minimize the overall heat input to avoid blowing through thin material, by spending less time at the peak current, and also for controlling bead size - since the puddle can cool and contract at the background current (if set low enough), you can prevent the bead from widening out without having to manually adjust your current with the amptrol. This is very nice for welding in a fixture or out of position. Pulsing will also make the puddle more fluid in DC I've found, ie. you can push the puddle a lot more at 75pps than at 5. The only reason I mentioned it is that it can be handy for getting your rhythym down in terms of when to move and add filler to produce the 'classic tig' bead appearance. Try something like: Background: 50% of peak current for your material Width/Balance: 60% peak Frequency: 0.8-1.0pps Add filler when the peak current is up, translate when you're in background. The real fun begins when you're in AC and want to start fiddling with the frequency... |
The pulsing is not as useful for thicker steel materials like the tubing you're practicing on. Get some bits of thin sheet metal and try a simple butt weld of 2 pieces; without pulse, it's a struggle maintain a decent puddle without it falling through. The lower level pulse current allows the area areound the puddle to stay cool enough to not blow through, while keeping enough heat in the puddle.
That being said; I'm still a Tig student....Took a while to learn to work with a smaller puddle than with oxy-acetylene. Regards, Mark B. |
MRWmotorsports Martin Walter Super Moderator Location: North Gower, Ontario, Canada. Join Date: 03/01/2006 Age: Ancient Posts: 450 Rally Car: Nissan 240SX |
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