I am just getting into DIY, sewing and building . I really want to build a pop up trundle for my little girl's room . I can't find any information on the internet but to buy one . Any ideas ???? That would be magnificent and much appreciated by me and my two little girl's . :-) What I'm looking for is how to make the pop up frame part ... Do you think just building a frame with criss cross legs and a locking mechanism would work ???