Step 1: Tools and Stuff
Plastic Ziploc Bag (has to be plastic!-thin)
2Flat surfaces (i used small plexi- glass boards)
Step 2: Cutting...
Step 3: Closing :D
1-Place the cut plastic on top of one of the peices of plastic, put the other ontop leaving 1 open side peeking out so u can melt it off.
2-Heat the soldering iron up then cut the plastic thats sticking out straight through (straight line accross) the hotter the faster and cleaner.
Step 4: Filling and Finishing up :D
AFTER filling try to move the paste as far away from the opening, put it under the surfaces and seal it , I recommend you not use the hole you used to fill as the side you use later:D