Blu Tack vs Blue Painters Tape

I wouldn't have guessed Blue Tak could be used in electronics. It's mainly used to stick some reminders, pictures and posters on the walls around here.

When i need to keep the parts steady to solder them, i just press them against the back of the enclosure. I always take the height of the components into consideration when i populate the board, to make it easier.

I used to use some tape, but it leaves some adhesive residue on the pcb. Just pressing the pcb and the parts against a solid surface works for me.