They were just what i was looking to do a Macrame project. Could not find them in the craft stores. I did not think I would find them in staples. I am going to have to check staples first from now on.
I needed something that I could push flat to attach an acrylic garland to my centerpiece. This worked like a charm! I recommend this for all sorts of crafting!
T-pins are sturdy and will pierce any surface paper plaster board cork soft wood rubber and concrete under the right circumstances. In each case you have to apply the right amount of pressure and a steady hand (unless you are using a mechanical device). Should your hand wobble the possibility of bending the T pin exists. Applying steady pressure with thumb and forefinger is optimal 30 to 40 PSI is ideal at 1 second interval. After pinning 40 to 50 pins your thumb will feel sore and possibly lacerate this simply means you've gone over the top. Dunk your thumb in a bath of ice cold water and rest it so that it heals continue work as soon as comfort level permits. It is always recommend that you see a doctor in case of severe contusions as blood clots in the thumbs can be dangerous.
The t-pins work great when you are building a model made of balsa wood. They hold the piece you have just glued together so that you can go to the next step of your project.