Here's an oldie but a goodie.
Let's face it. Sometimes pushing 1/4" Fittings into the ends of 1/4" Vinyl Tubing is not something one would say is particularly a snap. Actually, it's not a snap at all. It's more of a sliding motion, really. But I digress.
The fact is, most of us would rather work a little smarter than harder. Well, here's your chance.
To make inserting any 1/4" Fitting into 1/4" Vinyl Tubing as easy as possible, start by soaking the end of the tubing in hot water.
Before beginning your project, fill a mug with water, then microwave it on high for about a minute. (Amount of time depends on the microwave). Next, cut your Vinyl Tubing to length. Soak the end of the tubing in the hot water for about thirty seconds. Now, simply slide the 1/4" Fitting into the end of the 1/4" Vinyl Tubing. The hot water will have softened the vinyl to the degree that the fitting just slips in. Reheat the water as necessary.
It's a simple tip. But if you have to install a large number of 1/4" Fittings, it may just save your fingers.