Kyle you don't need to have that many bobbins, what you would need is extra spools that fit the bobbin. You can get them in packs of 3 or packs of 10. Also you don't have to have the auto bobbins for this vise, regular bobbins can be used but it's slower is all. The biggest advantage of the auto bobbin is the fact that the thread retracts its self which is a huge time saver.