Hairstraighteners are alright for rosin but getting your temps and pressure can be tricky and hard on some people with chronic pain, the rosin bomb though is economical for the home grower to be able to make clean soleventless rosin(wax concentrate)!!! I got the manual press which requires some arm strength but gets up to 7500lbs and the other two presses they offer you just press a button for up and down functions as well as heat settings!!!
90m @180*f
120m @200*f
90m @180*f
120m @200*f