A good tube of caulk is not cheap — so how do you keep it fresh once you cut the tip off? All you need is a modified plastic tube.
Now, twist-on caps are available at the home center, but most of them don’t work very well. I’ve found it’s much easier to grab some plastic tubing and make one myself.
Just take some tubing that’s 5/8-inch diameter by half-inch inside-diameter. Then use a pair of snips to cut a section of tubing that’s 4 or 5 inches long.
Next, heat one end of the plastic tube with an electric heat gun. You’ll need to heat it until it’s nice and soft — almost melted.
Then set the heated tube in a vise and clamp it pretty tightly to melt that end together. You should wait approximately 20 or 30 seconds before you take it out of the vise.
Before using your makeshift caulk cap, test it by blowing into the open end. You’ll want to make sure it has an airtight seal.
So, now all you need to do is get the open tube of caulk, slip on the modified plastic tube and press it on. It only has to go on maybe a half-inch or so.
And now, next time you need to use this tube of caulk, just pop it off and get to work!
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