[rclint]

Does it say CC below the current adjustments, and CV below the voltage adjustments ? Mine has a little light red that lights up when it's in CC mode or CV, 1 light below and between the adjustment knobs for curent, the exact same on the voltage side. To set mine in Constant current mode you turn the volatge adjustment kbos all the way up to max (course and fine adjustments) turn the Current adjustments all way to minimum (both knobs again) and turn on the power, the light will come on, when all connections are made (normaly before I turn power on) then I set the current to what I want and the rectifier will hold that current and the voltage will adjust to make this happen. I'm not sure what kind of rectifier you have ?

On the sput welder you make the connection with the wire (you get a smal roll with the welder) you can order more wire in different size, this will hold a good bit, but if anything much larger than a machine screw or such and I will use hanger wire, the hanger wire supports the weight while the wire connection from the sput welder will serve as a perfect eletrical connection

I'm not to up to date on Titanium wire, I have some on the way for spring clips, but I have never used it so I can't comment on it, I do know even tho the Titanium wire wil not anodize, the aluminum part will and still build the aluminum oxide layer that is a insulator and non conductive on the part being anodized.

edit note** You use aluminum wire with the sput welder, cheap, and throw in the aluminum scrap when finished