To prepare the glue you need to mix ABS and acetone. There is no perfect ratio at which you should mix the two. Use less ABS to make a thinner solution. For a thicker solution use more ABS. Thicker solution is important when you want to bond or mend parts.
Tighten the drive belt When the printing machine has worked for sometime, it’s common for the drive belt to get loose. This results to the dimensions of your prints getting smaller than they should. The sides of the round object also tend to be flat.