Got a new tool for opening jars...

LOL! Is the jar still usable after he opens it?!? 

All joking aside (and it was a great one), this does bring up a problem with many major model paint brands.  For the square jar Testors, I have mounted an aluminum plate on my workbench with a rectangular notch cut out, that allows me to put the bottle in the notch and turn the top with pliers.

But the round bottles are hell.  I have one of those rubber jar openers to grasp the jar, but it is frequently not enough.  I bought one of those sold by a popular hobby tool distributors, but it bent into uselessness when I tried it on a really tough case.  Grasping the bottle with bigger pliers just tears off the label, leaving the jar unopened.  Anyone know of a commercial opener that really works?

I use both the rubber jar openers with a pair of pliers with success many times. Use the rubber to hold the bottle, the pliers to open the jar. Easy peasy.....

I use a "Grip Wrench" made like an oil filter strap wrench only it has a plastic handle with a  rubber strap that you put around the bottle cap and tighten by pressing the trigger and pulling the strap until it's tight. Then I put the bottle in a small vise with soft rubber grips and unscrew the cap. It's worked for me for years with no broken bottles. My wife uses it in the kitchen for stubborn bottle caps all the time. It came in a set of two, one fits large bottle caps and a small one for small caps. Available in auto stores.

Jim  

I've never had one I couldn't open after running the cap under hot water.