You need some kind of press to make the sheaths out of kydex whether you buy it or you make it yourself. Because the clamps I was going to use where like $15 each and I was going to use for and I would still have to buy camping foam and by some wood, I figured that it would end up costing around the same amount as a ready made press, and the ready made one is easier to use, so that is what I went with.