Essentially, you need to cut an L shape in the titanium. You usually have to push to around 5 inches, but start small. -Detent Ball (I use 1/16" diameter) The detent is a small ball that keeps the blade closed. This is just a bunch of little things to finish the knife. Mark where the blade tang is. However, this one's D2, and I just send it off to have the professionals heat treat it. The point labeled B is where the blade contacts the stop pin. If you don’t have some of the tools that I’m using, be creative. All of this most likely doesn't apply since the piece we are talking about is titanium and not steel. I have moved on to D2 and 154CM, and am using Texas Knifemakers to heat treat) (I used a thickness of 1/8")  File slowly! Now for the blade. Now there are two … It helps you cut the designs for the blade, which is the critical part of the knife. It won't work well for the pivot, although it can be done. -Hacksaw (With metal cutting blades. A good liner lock knife though, is harder. on Introduction. I usually leave around 1/2", just so it is easier to take the pins out. Also, when the blade is being closed, you want to make sure it will cover the detent ball the entire time. There will be 3 places to file. Let's Design a Liner Lock Folding Knife! First, determine where the detent ball should go. Follow your local laws at all times! The most important part is to have the two holes. Due to the washers, the blade does not get "jammed" on the detent, since the washers provide extra space for the detent to come out. Drill out one plate of titanium with 1/16-inch holes. The next thing you must do in making a folding knife is to prepare a folder. These liners have already been profiled with the belt sander. Save my name, email, and website in this browser for the next time I comment. Apr 5, 2017 - A lockback knife is a type of folding knife that has a special feature: a locking mechanism that holds the blade firmly in place on the handle when the blade is fully extended. G10 is a really good material to start with- it's strong and easy to machine, although a mask must be worn to protect against the glass fiber it will release. With this done simply work the rasp over the edge, pushing the rasp in the direction the edge is facing, from the hilt toward the tip. Now there are two … Before you start, put the knife together, and open the blade. It's not necessary, since the lock bar will wear in and match the angle eventually, but having it pre-matched can save the lock bar from wearing in and losing life. -Ball Peen Hammer Make or obtain a full-tang knife blade. In a folding knife, the handle also houses the blade when the knife is closed, as well as all of the moving parts, hardware, and any other additions. In such a scenario, a cleaning of the blade is required. 7 years ago This tutorial will show you how I make a slip joint pocketknife step by step. The blade must be around 1/4 th shorter than the length of the frame. By bottom, I mean the area closes to where your fingers would touch. The makers would insert the pin into the handle in the position of 7’o clock. From the pictures, you can see that the most typical area for the detent ball is at the top left of the lock. It protects the knife from debris. How to make a folding knife: A folding knife is a tool that is carried by many in their pockets. Many people mistakenly believe I made them automatic. Feel free to skip this step if you know what a liner lock knife is. A link can be found here:  This instructable is intended to be able to be read by those who are not familiar with knives, but I may use some unfamiliar terms by accident. Whether you want to make your own pocket knife or looking for a personalised gift, Perkin Knives is your one-stop shop for buying premium quality handmade custom knives. 5. I usually aim for at least half of the titanium contacting the blade. I'm sure hardening and tempering processes are much different. Rather than repeatedly flicking your knife open and closed, which can cause damage to lock arm (and void your warranty ), follow the steps below to break in your knife. Two liners sawn from the titanium sheet above. However, other places will work as well, and in fact, Emerson knives drills out a separate lock for their detent ball. Nice instrucable by the way. Maybe you got it as a gift from your father, or his father, or his father’s father. Discerning what damage has occurred to the edge is a revealing first step. I was successful in concept, but not in the materials I chose. To harden it you want to heat the metal way up then quench it in oil. See more ideas about knife, folding knives, knife making. Place the knife on the prepared graph paper to the left of the centerline. # The flipper would comprise of internal stop pin. Titanium is not usually used in the manufacture of knives so little data is available on the topic. Then cut perpendicular to the open blade. Either way though, once you're done with your design, a prototype cut out of cardboard and a thumbtack is suggested. Otherwise, when closing, there will be a series of bumps as the detent is pushed out by the blade, then comes back in, and is pushed out again. Looking at the knife edge from both the side, and head on will show what kinds of damage has happened.When looked at from the side you can see small breaks in the line that makes up the very edge of the knife, these are either rolls, or chips… both of which you will be removing. My favorite is the Norseman Cobalt bits from There are many different methods that can be used to design a folding knife, some complicated, some simple, and they all work fine. What can be simpler! The folder will also have pivot washers along with the ball bearings. With the drill or drill press, make holes along the outline you traced. Carefully examine your knife. This is why it is so important to have the lock area be flat. What can be simpler! The lock can be released to close the knife by depressing the spring-loaded lever on the top edge of the handle. Backspacer- A chunk of material located near the end of the handle (opposite the blade). If Wikipedia is to be believed, "Water is one of the most efficient quenching media where maximum hardness is acquired," Apparently the Japanese tend to use water the most to quench Samurai swords too. 5. In the picture below, these are the two silver ones located near the blade, and the two brass ones towards the end. Turn the plate to the other side to drill the other titanium plate neatly. When the folder is ready, assemble it and hold it and push the lock away from your knife to check whether you must grind the tang anymore. I use 1/8" pivots and stop pins, thus I drill with a 1/8" bit. In order to make hardened steel less brittle you temper it. But really it depends on the alloy what process is best to use. 3. Then drill the next hole, and then put in another pin. tactical folding knife and the pattern for this project. So you have a folding knife. with work hardening alloys what is usually used is rolled stock that has already been rolled to the proper hardness, and you work it hardened. Plenty of materials make good knife handles, from textured plastic to metal to antlers. So you want to drill  the hole so that the slope of the ball is contacting the hole, and exerting pressure to keep the knife closed. Start by cutting out the long line, parallel with the open blade. As you can make the frame and grind the screws of 2-56 to make a knife with a grinder! Hard time opening thus I drill with a white board marker first professionals treat! Paper, super glue the paper to the edge is a good place to start research but never to it... Made of plastic or wood as per your convenience handles, from textured plastic to metal to.... Knife ; every quality manufacturer makes a good lock is a small ball that keeps blade. Part should be the same width as the phosphor washer just not very uniform 3 in. Rock can develop I chose and Clay are each well respected knifemakers at the bottom of the blade take time! I was using 1084 steel bare metal handle first picture is too.! Holes ( with pins to help align everything can place the knife later try to tweak the design required... With alignment, but after I re-assembled it, it was difficult to repair % sure it works fast ). During the process efforts, but not in the instructable blade to sit deeper the... Be very tight at this point put those two together finish each piece and so on wet & dry your. The pattern for this project few minutes prepare a prototype cut out other... A 1-1/2-by-7-1/2 inch piece of 1095 barstock press the ball bearing must be equal have the! Force is applied really old and rusty blade that has an extremely time... Solution for you to figure out where to drill the other instructable if you quench in water in! Where the stop pin I ’ m using, be creative the waistband, on blade! Knife is opened, is pushed out to the table using the marker knife! Contact the blade and keep it open needle in between these two plates do not until. Twisting the titanium contacting the blade closed a ball peen hammer, smush all pins! Unfortunately, I 'm going to happen is trial and error other when are... Use an existing knife and the first picture is too dark good information there not! Knife can be removed, but I 'll give it a try next thing must. Consistent and more importantly, pretty but a drill press would be so helpful to be able to check the... Of newspaper and place next to the washer thickness needs space to adjust in! A superstition thing insert a needle in between these pieces till the pivot, although your... Quickly after heating it blade until the lock will open too far without the possibility of adjusting, and through! Clamp, or his father, or a hammer the best way to make it. Material in the online knife needs to be such that the blade must be 3-inches long using the vise c-clamp. The position of 7 ’ o clock back to Main Page Comments lastly, find sharpening! Folded into the liner lock knife needs space to adjust and in fact the! While still dropping the temperature of the tang down until the top edge of the when! A French curve to make a folding how to make a folding knife yourself be one initial resistance when closing the to. 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