My ABS prints are not sticking to the heated bed

Place an even layer of normal translucent packing tape on the heated bed and print on that layer. The object you are printing will stick better to the bed. Tip: to remove the tape (if you want to print with PLA again) wait until the bed has cooled down so it doesn’t leave any residue behind. If some residue is left behind make sure you cleaned and degreased the bed thoroughly before you start printing PLA.