This is a great addition for a homeowner who needs to replace some toilet/sink water valves. As some others have written in their reviews, this is not a large, robust tool that would suit someone in this profession. There are other options that are much more expensive for this purpose. However, as a DIYer, I have found this tool to be very effective and can offer some advice. Use sandpaper to scrape the copper pipe from the existing ring to the edge. The pipe should look like new when you're done.2. Then spray a penetrating lubricant onto the existing compression ring. I personally use PB Blaster. It has many other uses and is a staple in my garage. http://www.amazon.com/Blaster-16-PB-Penetrating-Catalyst-oz/dp/B000I2079E/ref=sr_1_1?ie=UTF8&qid=1427578446&sr=8-1&keywords=PB+blaster3. Allow the creeping agent to soak in and then put the tool on.4. As I rotate the T-handle, I hold it so that the T-handle is between my middle and index fingers. This allows an even pressure to be applied to the tool. The handle is quite small and I can see it breaking if you try to crank it with another tool like a "cheat pipe". I hope these tips help others.
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