Quickly complete 'Mass Production' quest

When doing the 'Mass Production' quest, you can get two oak planks and put them in a crafting table and have your inventory full, and have something you are holding in cursor, then when the sticks show up in output hold Q on them (Or drop key) and hold Q, which would keep counting as crafting 4 sticks even though you didn't actually craft them - This is what happened to me, have not tested further