🐏 Big Horn 4 Inch Self Centering (Model 19138) Review

they do exactly what they should and are durable for use in a drill. The only thing you need to know is not to play with the socket head screw which is on the bottom. just leave it alone and use it as is. because if you fiddle with it, the tension of the spring will make it fly out of your hand and fall apart, which is not good. So the advice is to just take it out of the box and start using it.

I have had several of these shelf pin bits. It has a couple of pluses and one big but fixable minus. Bad news first: when I started using it, the racquet fell apart. I tightened the Allen screw and after a few holes it fell apart again. This time small pieces scattered on the floor and the quill fell into my magazine. Once I had all the pieces together and thinking how lucky I was that I had swept the floor the day before, I took a closer look at the bridle to see why it was falling apart. The…

This thing self-destructed on the first hole. Firstly, the drill is barely held by the set screw and will pop right out. Sawing a flat section on the drill will help the set screw hold it securely. It's annoying but fixable. A fatal design flaw is that there is nothing holding the spring in place, causing the entire structure to fall apart almost immediately. There is a clip that is supposed to hold the spring, but when the spring is compressed its diameter increases just enough for the spring…