PeteM wrote:Here is a good article on the subject of CC/CV power sources and their applications.

http://www.lincolnelectric.com/en-gb/su ... utput.aspx

Many thanks to all who responded and I apologize for the delay in replying!

Best,

Lyman

Wire feed speed is your welding amperage. The voltage needs to be high enough to weld properly at the set wire feed speed. Too low of voltage and bead is narrow and rope like. Increasing voltage widens the puddle and flattens it. Too much voltage spatters a lot. However, if I need the full output o...

If there aren't any dimensional constraints, as in something has to fit inside of it, or it has to fit into something, then it doesn't matter in that regard. If there is tension pulling to open the members, then weld inside. If there is force that would collapse them into each other then weld outsi...

I have two pieces of 1/4" steel (8" length) in an 'L' formation. Should both sides be welded where they meet or only one? And if the latter would you weld only the inside or outside of where they meet?

Thanks,

Lyman

Greetings,

With respect to wire feed speed, I had read (or misunderstood) that this should be adjusted first rather than power output. Unit is a Lincoln 125HD.

Many thanks and a safe and Happy New Year to everyone.

Best,

Lyman

Slow run in is a feature that was designed to address that issue. It takes an extra fraction of a second to get the metal and filler up to working temps. So you sometimes stub the wire on initial start. Lower current the more pronounced the effect is Composed with Swype on mobile. not responsible f...

one thing you could try is getting a new Brass Ground clamp and when you put the ground in there also feet a second wire in there that will be bare at the last 2-3 inches (make sure you use the Good Welding ground wire for this as it has thinner strands of wire) and when you clamp it down on your w...

There are any number of places to have a continuity issue. Where your ground lead enters the ground clamp is a good spot for wear and corrosion. In the machine, where you switch polarity for flux-core vs. gas MIG is another. If this machine is not new to you, perhaps someone switched it and didn't ...

ldbtx wrote:I've had good luck with Radnor gear over the years.

Thanks ldbtx!!

Best,

Lyman

I had to replace the Gas Diffuser on my Lincoln 125HD. I went to a Welding Supply company today and they sold me a Radnor 35-50 Gas Diffuser that they are adamant will function without issue on the Lincoln 125HD. Being new to welding I wanted to run this by the forum. This is, btw, a fantastic forum...

sedanman wrote:If you need to use the machine, go ahead. You won't hurt anything.

Thanks. Did you get a chance to look at the photograph?

Best,

Lyman

Its 33 volt ocv. I have the sp-175t, and it only makes a tiny spark if you touch a connected work piece with the tip. Not sure why they really blow like that sometimes, but I have seen it happen occasionally when people are changing tips or cleaning the nozzle and set the gun down with the diffuser...

Some welding machines have OCV (open circuit voltage), others are simply always "hot". Did this arc burn the threads of the diffuser where the tip turns in to it or where the diffuser threads in to the gun tube? Reason I ask is because that could also be the point at which you lose contin...

Yep. There's a problem with continuity somewhere. The wire feeder doesn't know if the wire is burning and keeps feeding even if there's not enough power happening. Steve S Thanks....now I just have to find out where. Would appreciate any input on the issue with the gas diffuser in the other post......

Might be a bad ground connection. Thanks for the reply, much appreciated. Is it best to clamp to the item being welded or to the table? I'm assuming the former. Did a good one tonight....unit was on, ground clamp was on steel I was going to weld (which was on the table) and I placed the gun on the ...

I've noticed every once in awhile when I am welding (Fluxcore) that the gun 'kicks back' but seems to happen when I am using less power. The insufficient voltage aside, could I be feeding the wire too fast while not moving along the metal at a sufficient speed and the wire is pushing the gun back? A...

I would like to thank everyone for their excellent input, it is greatly appreciated. For the time being I have bought small welding table from (I hate to say it) Harbor Freight. For now it serves my purposes and once I get a handle on welding I will order a large table. Before doing so I want to mak...

Hey Lyman. Is the question 'left or right' or 'push or drag?' There is an old rule of thumb "Where there is slag, drag". In my own very limited experience with flux welding, this rule of thumb has worked well for me. But I'm sure someone with much more experience will chime in shortly. Ky...

Flux core is a drag wire. I.E. You point the gun towards the puddle but pull the gun along ahead of your direction of travel. That's not set in stone you can push it in some cases depending on material, wire, and experience. But asking a guy if he drags left or right is like asking what hand does h...

I am new to welding and am using Flux Core. I've watched countless videos where depending on who you're watching they say (using a lap joint as an example) to work from left to right or, conversely, right to left. I believe Lincoln is absolutely adamant about working left to right. So all that said,...

Depending upon where in MA you are, there may be a Metal Supermarkets location near you(https://www.metalsupermarkets.com/bostonnorth/). They specialize in small cuts of anything you want. I buy an enormous amount of material from my location, even my recent welding table stock. They will even cut ...

Thx Well 50 was little low, rather 65 but thats about it. 8-) Steel, alu tubes, pipe clamps and wheels accounted for. Building a table won't be hard, but that said would I be able to use 36 in. x 36 in. x 0.025 in. Diamond Tread Aluminum Sheet steel on top of plywood? Would grounding be an issue wi...

AndersK wrote:Have roughly 50$ in material in this build

http://forum.weldingtipsandtricks.com/v ... =9&t=10454

That's really nice, and you've only about $50 in it?

electrode wrote:Where are you located? Here is a good deal on Craigslist in Georgia.
http://valdosta.craigslist.org/for/5860524696.html

Thanks but I'm located in Massachusetts.

You can make a pretty basic table your self. Depending on how heavy you want to go. I would recommend for a light weight table you could make a square frame from 2in x 2in x 1/4 angle for a top.. Then just use 1/8 in sheet for the top. Use 1-1/2 in sch 40 pipe for the legs. That would be about as c...