I was trying to staple 2-4 layers of marine vinyl to 3/4 inch thick furniture plywood. Staple guns, one from Walmart and one from Home Depot. Walmart had put maybe 1 out of 10 staples right. Home Depot got maybe 1 out of 4 staples right. Incredibly disappointed after spending loads of time and money making something that shouldn't have been that difficult, I started looking online for electric staple guns. I finally settled on this one because it had great reviews and didn't need an air compressor to work. I totally got through the rest. My project. The thing just works, period. Put it on top of 2, 3, 4 (maybe more) layers of very thick fabric and it will go through them and into the wood. At the same time, be careful. Your angles when you do this because it will shoot cleanly to the side of the tree if you don't point it directly at the main body of the tree.