Say, You’re cutting a tomato or slicing a piece of meat. Suddenly, the handle of the knife slips or breaks. Can you imagine what’s next? It may cost you a cut on your hand or a deadly injury.
That’s why professionals in the knife-making industry pay close attention to perfect adhesives for knife handles. But which glue is perfect and best for a kitchen handle?
In this article, we arranged a duel between gorilla glue and epoxy. Tell us your prediction. Who’ll win the cup: gorilla glue or epoxy?
What Is Gorilla Glue?
Gorilla glue is one kind of polyurethane that is activated when it comes in contact with water. Some people confuse assuming gorilla glue and super glue are similar. But they aren’t.
Though designed for the same purpose, principle compounds are not alike. Polyurethane in gorilla wherein cyanoacrylate in super glue.
Gorilla is limited in use –
- They’re excellent for porous surfaces like wood and furniture, but they’re not very versatile.
- Water-resistant, but you should prepare a dry surface to initiate the process if you want better performance.
- It’s a comparatively moderate strong adhesive.
- Plus, gorilla glue can work in extreme temperatures.
- Another good is inexpensive glue in the market.
What Is Epoxy
Epoxy is a versatile, durable, common type of adhesive. Chemically, it’s a sort of polymer. Polymer refers to a mix of two or more substances that consist of large molecules and repeated subunits. This particular polymer structure is made from two compounds, namely: resin and hardener.
Two types of epoxies exist. One part (heat-cured) epoxy and two-part epoxy. Though one part epoxy is weaker than two parts, it can cure faster.
- Epoxy adhesives are perfect to use on various surfaces, including wood, metal, plastic, masonry, and many more.
- Its incredible strength made it a good choice for gluing.
Comparing Gorilla Glue vs Epoxy
Both these kitchen knife handle materials are good adhesives in the market. Still, they are different and unique in their features. Here is a basic comparison chart to have a quick overview.
|Works on -40°C to 100° C||-150° to 170°C|
|Less gap-filling capability||Comparatively more gap-filling capability|
|Requires 24 hours to dry||72 hours|
|Clamp time=60 minute||Clamp time= 90 minute|
|Less strong than epoxy||More strong than gorilla glue|
If it’s not enough to understand the differences between permanent epoxy and gorilla glue, here comes an in-depth discussion based on specific criteria.
Ease of Application
Let’s start with the easier one: gorilla glue. As it is only a liquid, it doesn’t bother you. You don’t have to take any difficult steps. If you’re using gorilla glue, here are three easy steps to follow.
- Dampen the surface
- Pour the glue
- Clamp for about half an hour to 60 minutes. Let it dry. It will cure within 24 hour
Epoxy is not that easy. As it has two parts and you need to mix them first, the process goes a little bit tricky.
Usage process as below:
- Take an equal amount of resin and hardener
- Stir at least 3 minutes
- Pour gently onto the gluing surface
- Clamp for 60 minutes and then wait 90 minutes
You may wonder how many days my epoxy adhesives or gorilla glue remain working.
- Well, for gorilla glue, if it’s intact it works even after 1-2 years. However, if you have already opened the seal, validation limits are to 1 year only.
- Contrarily, epoxides are much more sustainable. You can use it within 3 years of the production date labeled on the packet. Even it may remain working after decades if it’s not interrupted.
Not any of them are bad in terms of sturdiness.
- Epoxy makes a strongly hard bond when fully adjusted.
- The countertop nature gives it a long-lasting feature. You can truly put your trust in them.
- However, gorilla glue is slightly less avidly bound. But, it also sticks well.
- Anyway, the sturdiness of both these types of glue increases in porous surfaces.
- If not porous, try to sand the metal. It will increase glue’s capability to hold together.
Gorilla Glue vs Epoxy: Which One Is Best For Kitchen Knife Handle
Our show is almost over. It’s time we announce our winner. But before doing so, we must have a look at what factors make a glue better than its counterpart.
One Glue is Better than Another For
- Adhesion: Obviously, glue is for adhesion. Not only should it be able to bind strongly but also should have the ability to bind any type of surface together.
- Gap filling: If the surfaces are to be glued, aren’t smooth, adhesives must have this feature. Glues should fill the gap between two surfaces. Epoxy is very good at gap filling.
- Tensile Strength: Tensile strength refers to a material’s ability to withstand being pulled apart by pulling on it. The more the tensile strength is the better the adhesive is.
- Shear Strength: Shear strength is exactly opposite to the previous one: tensile strength. It is all about putting pressure to break across the material.
- Moisture Resistance: Finally, glue should be constructed in a way that it wouldn’t break just for contact with moisture.
Our honorable judges have just announced the winner of this show: Epoxy, the best glue for wooden knife handles.
Now, we are going to show you the good sides of Epoxy for which our judges decided it is the best glue for knife handles.
Pros Of Epoxy
- Strong adhesion. Epoxies bind excellently. No chance to slip the blade anytime.
- Versatile, to work on any type of surface from the tang blade to wood handle.
- Low shrinkage on curing.
- Great mechanical properties. Epoxy glue has strong cohesion and compact chemical structure
- Free from any contaminants like salt and alkali.
- Doesn’t deteriorate shortly. Once you’re done gluing, will remain for decades.
- High corrosion resistance. Since knives are subject to water, you’re at high risk to get rust. But epoxy can fight that.
- Normally, they’re heat resistant.
- Safe to work. Normally they don’t create small, volatile by-products on curing.
- Never over clamp.
- Doesn’t get stones hard. Have elasticity even after being cured. Just Heat, cold, moisture, and dry it. This way you can break down the excess stuff if any.
- Slower curing epoxies are reasonably good. They are better glue for silver knife handles because they bind more strongly than 5-minute epoxies.
Let’s be honest to let you know epoxy does have some drawbacks too.
Cons Of Epoxy
- Curing time is long. Even 5 minute epoxy for knife handles needs 16 hours to cure which should have not taken more than an hour.
- It is a little bit costly. Remember you have to mix two components to prepare this glue. So the price is worth it.
Now, here is why we don’t prefer gorilla glue for a knife handle.
Cons Of Gorilla Glue
- Not versatile enough to work on nonporous metal surfaces
- Swells and turns white if you accidentally put some excess. Icky, sticky foam can’t be removed without grinding it.
- Though it expands it is not gap-filling.
- Has to cure under some compression.
- Stains and oozes everywhere. May leave deep stains in your skin that can’t be removed by anything except time.
- Turns into unusable hard stuff if left for a couple of months after opening.
“Gorilla glue vs epoxy, which one is the best glue for kitchen knife handles” was our today’s battle. So far you got the winner: Epoxy.
Investing in epoxy for gluing kitchen knives may be a life-saving decision. For a couple of reasons we explained earlier, epoxy ensures the best adhesion and grip between knife handle and blades. Plus, it prevents the blade from slipping anytime and cutting your fingers.
Gorilla glue is not a bad one amongst adhesives. But they can’t beat epoxy when it comes to knife handles.