My Nicostick worked well for a day. Then having parts move around by taking the cart on and off (I haven't epoxied yet), I guess my wires wiggled. Turns out, I think some of my solder connections are cold. So last night I web searched "how to solder". Read everything I could. Didn't realize that you have to heat up the object to receive the solder. I was melting the solder with the iron onto the item. Oh well, time to try another. It worked great while it worked. Tons of vapor.