any then 18:1 pressure ratio which I have tried or one that had a 26:1 pressure ratio and although yes it was a bit easier too operate, it was also significantly more expensive, and the difference was nothing to brag about. 18:1 is more than enough pressure to use everything from spongy cement pipes to watery windows. Calc works fine. The reason I give this 5 stars is because it comes with some really useful tools that I didn't know how to use at first. It's a definite downside that it doesn't come with instructions, it's just an attempt, not your typical bullshit without a simple piece of paper telling you what it does, what and how to use it, but I was able to ask Saul from a friend and he knew all about the additional tools that come with the caulk gun. These tools have one big disadvantage, they are all cheap plastic and not for long from this world I think. After the first use, the plastic scraper left black streaks on the tile from the plastic breaking down (which btw ruined the tool as it no longer had a smooth, even scraper.
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