I like to solder things and stuff. I get frustrated when the solder just wont stay or go where I want to. Today I was working on a robot for science olympiad at school and my teacher showed me how to use liquid solder flux. I was amazed by how well it worked. I asked him where he got it and he said menards but he didnt remember how much it cost. Does any one know. I cant drive yet and my family is sick except me so asking a friends mom to give me a ride to menards would be kind of weird. Do you know how much it cost at other stores? I could only find the paste on radioshacks website. It didnt seem to work as well when I used it.