Shave Head Tri-Fold Rivets
Water Tight Shaveable Rivets are a type of bulb rivet designed with an unusual mandrel. The mandrel on a shaveable rivet's mandrel does not break off entirely on installation. Instead, a portion of the mandrel is broken off and remains in the hat. Then, a rivet shaving tool is used to shave down what is left of the mandrel. This leaves a smooth head surface without the typical hole in the middle that is common on blind rivets.
Water Tight Shaveable Rivets
Water tight shaveable rivets have a built-in rubber (EDPM) washer attached at the base of the hat. As the rivet is installed the rubber washer will be pushed against the hole it is being installed into. The rubber will expand and fill the hole of any gaps to create a water-tight seal. These are a common choice for RVs and trailers as replacements for the factory rivets that come loose from natural wear and tear.
Tri-folding Shave Rivets
Shaveable Tri-Fold Rivets Demo Transcript
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Bob: Welcome back to Albany County Fasteners - Fasteners 101. Today I'm going to demonstrate the installation and shaving of a shave rivet. Let's get started.
So I have here a piece of pre-drilled steel. I have a couple of shaved rivets. These are tri-fold exploding rivets. This particular rivet has a washer on it so, if you need waterproofing for a trailer, you can get them with the neoprene washer against the backside to prevent any leaking into the trailer.
I'm going to insert the rivet. I have my rivet tool and you don't install these like a normal rivet. You don't keep cranking the rivet tool until it snaps, but you do want to snug it up to the backside and I'm going to show you.
As you can see here, that's correctly installed. That is incorrectly installed. You can see that it's not totally up against the backside. So you want to make sure that you install the rivet properly so you have a nice tight fit.
Then I'm going to take my snips and then leave about a 1/2 inch and I'm going to snip these off. That's a little bit more than a half an inch.
I'm going to take my shaver, these shavers you have to select the correct bit along with the correct crown to shave off this mandrel properly. It's a little tricky so you have to learn as you go.
You just gotta go a little bit at a time. Can't just push down on it hard. That's it right there. Look at that! Very nicely finished. Nice-looking product.
That's your backside. That's your tri-fold, also collapsing as they say, because the rivet collapses on the backside and on the outside of your trailer or whatever your riveting for a finished look. That's the key there.
These tools are they range in price anywhere from, you know, two hundred and some odd dollars. Maybe $299 and they can go up to seven or even $1,000. I bought the cheapest one to be frank with you. This is $299. It does the trick, it's a good product.
Thanks for watching!