This came set to highest temp, and it heats up very fast. Highest temp heats the glue so hot is runs like honey which works from some things like pouring into a space and the glue will run in to fill the entire void. Otherwise too hot to build any kind of a wall for support. I love the interchangeable tips. You will have to learn a little but so far this thing is Awesome! Just do not use the highest heat setting unless you are needing a “liquid” hot consistency. I would definitely buy this glue gun again.