If the spool is too large for your machine you can use a thread stand behind your machine. There are many thread stands available. Some thread needs to come off the spool horizontally, while other thread feeds better if it comes off the spool standing vertical. I use large spools of thread, and some are wound differently prompting me to purchase a thread stand with both horizontal and vertical pin. You can see them here:
http://www.ebay.com/itm/Universal-TH...item417fe09ed7
Of course there are other stands there....this is just the one I prefer.