How to make a folding knife: A folding knife is a tool that is carried by many in their pockets. The detent is a small ball that keeps the blade closed. 7 years ago If the hole is drilled so that the entire ball sits in the hole, there's going to be a little wiggle in the blade because the ball isn't pressing. Patience is the key. I've posted an instructable about making a fixed blade knife. When you file this one, try to line up the knife as you designed it. Here is the step by step procedure you must follow to make a folding knife. Your email address will not be published. From the pictures, you can see that the most typical area for the detent ball is at the top left of the lock. Send me a note at: We may earn an affiliate commission for a qualified purchase. Then, make the backspacer. ## The ball bearing of 1/16 inches should be put into the lock. Ah, thank you for clarifying. Put the knife on the circular saw and trace the outline of the blade. So wherever the blade touches the handle (the two stop pin contacts- opened and closed, and the lock), leave a bit of extra space- say 1 or 2 mm. About: Please visit my blog for more EDC and knife related things! 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. On these pages you will learn a simple method for designing a liner lock folding knife. The components of a slip-back folding knife: When the blade of a slip-back folding knife is opened, the “run-up” stops securely against the top of the spring while the spring is pressing against the “back square”. DIY Knife Making: The Right Materials Michael is using a 1-1/2-by-7-1/2 inch piece of 1095 barstock. Picture 1(Open blade): Point A is where the stop pin meets the blade. 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. I also make a groove about a 1/4" above and parallel to the slot. SketchUp is good for this, in that the parts can be rotated just like they would be in real life to check for clearance and alignment issues, but doesn’t tell the whole story. Basically, I compact the lock, and then "heat treat" it. Pivot- What attaches the blade to the handle, and what allows the blade pivots on. I would stick to using you hammer to work hardening it. Before you start, put the knife together, and open the blade. I have been playing with a design for a pocket knife in SketchUp, an all metal folding lock-back with a 3-1/4″ blade. Disclaimer: I'm not responsible for any injuries(likely) or deaths(unlikely) that may occur as a result of your attempt to follow this instructable, nor am I responsible for what you do with the information you have obtained from this instructable, nor what you do with the knife you have made. I suggest using inkscape for the drawings, although if your hands are good, drawing works as well. I used 3-1/4″ air gun nails as the pins and did all of the work on the knife by hand, using hand tools. Next, open the blade, draw a line using the knife, and the back of the liner’s tang. Push the blade in on top of the pivot pin. 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. I had more trouble with this than I should. Now, with your lock bar released, bend the lock bar out by securing the back of the liner, and pushing the lock down. Whenever you drill the hole, you need to take the titanium plates away for de-burring. Thus, I will be using several different models to demonstrate the steps. It takes a while with hardened steel, but it is the last step! The pattern is not symmetrical, as the back of the sheath has an extension that ultimately will be folded down and stitched in place to make a loop through which your belt will be threaded. The lock can be released to close the knife by depressing the spring-loaded lever on the top edge of the handle. At this point, your blade of the knife, the cutting edge, needs to be finished perfectly. When you use the shouldered stand-off, it will not let the blade to move unnecessarily. Sounds simple huh? You do NOT want to use water though, this will make the metal brittle. Going too hard might flake the titanium. I was successful in concept, but not in the materials I chose. Feel free to skip this step if you know what a liner lock knife is. This should clarify the old hardening process. These plans are very user friendly which helps in making each woodworking project enjoyable and simple. EDIPretty much the most critical step. Thankfully, today’s high-tech knives made from high-end stainless steels are typically insanely sharp right out of the box. 5. This will allow you to figure out where to drill the detent depression on the blade. It’s my first try with a Buck knife. 2. However, the price is decently cheap, and not counting the tools, only costs me around $25 per knife. Turn the plate to the other side to drill the other titanium plate neatly. Also, file the lock bar, and try to match the angle of the blade tang. The knife held, but to my surprise, the lock bar had compacted, and thus wore so quickly the blade developed lock rock (where the blade can move a little bit when it's locked.) A liner lock works because a spring in the side of the handle (usually titanium) is in the path of the blade and keeps the blade open until the spring is pushed over to the side. Use a file to finish the blade. oil is a much 'smoother' quenching media, while still dropping the temperature of the material effectively to the required zone. on Introduction, HOW DID YOU GET THE IDEA TO PUT THE KNIFE ON THE ROSES FOR THE PICTURE. The depth of the chips taken out of the blade will indicate how much metal al… Now, a liner lock knife needs space to adjust. Draw the plastic handle on the titanium sheet. I don’t have any special equipment such as milling machines or surface grinders, so the knife in this tutorial should be able to be made in any standard knife shop. As the blade wears in, more of the liner lock will contact. The machine that carried out this welding job is known as a carburizer. Terms to know: Carrying a folding knife inside the waistband is typically effective for added retention. I own two Buck 110 autos. Never heard of using oils, but I'll give it a try! Make sure to leave extra space around your lock and stop pin areas on the blade. When the blade is closed, the detent, and the liner lock, moves inwards a bit, and the detent ball falls in a depression in the blade, thus keeping the knife closed. Save my name, email, and website in this browser for the next time I comment. Remember that metal can be removed, but not put back on. I use 1/8" pivots and stop pins, thus I drill with a 1/8" bit. So in this video, I attempt to make a conversion: folding knife to automatic. I added some ideas below for examples. To double check, flip the blade over, and do the same thing. In order to make a folding knife without any prior experience may be a time taking process but we want to remind you even if it takes time to be finished, let it take. After you drill the first hole, line up the two scales and, using the first as a guide, drill through the second. 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. I buy a lot of used pliers and do it to them. Now, it is time for you to countersink the two of the pivot screws. First, determine where the detent ball should go. Then drill the next hole, and then put in another pin. File 5 times, check. Power tools, however, make the chore much easier and quicker. Coat the inside of the blade with a white board marker first. If you are going to try to do it with just a drill, try to keep it as close to perpendicular as possible, and when you're drilling holes where the same pin would pass through, use the holes as a guide for the next hole to be drilled, that way all your holes can be at the same angle. Either way though, once you're done with your design, a prototype cut out of cardboard and a thumbtack is suggested. Another location for positioning a concealed knife is outside the waistband, on the dominant side of the body. They'll be put in and taken out quite a bit during these next few steps. Now comes the moment of truth. This tutorial will show you how I make a slip joint pocketknife step by step. The top area raises the blade when the knife is opened. Also, cut out the handle slabs at this point. Blade design depends on your uses and the knife. A straight spine helps with alignment, but is not necessary in the design. You didn't have the right polishing compound? # The flipper would comprise of internal stop pin. The light green verticle line is your lock. -Expo Marker 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. Then flip the blade over, and do the same. Thus, the detent ball can only be as tall as the phosphor washer. if you quench in water microfractures in the steel can develop into big cracks. 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. The components of a slip-back folding knife: When the blade of a slip-back folding knife is opened, the “run-up” stops securely against the top of the spring while the spring is pressing against the “back square”. I'm no expert so for exact hardening processes I would do some research yourself. They've been doing that for long enough that I think they may know what they're doing now. 2. was lot of fun. The liner lock was invented by Michael Walker, who altered the electrician's knife to create this folding knife, with a ball bearing as its detent. You know the lock has been bent enough when it rests a bit further out than the thickness of the blade. The most important part is to have the two holes. It’s my first try with a Buck knife. Lastly, find a sharpening stone and sharpen the knife. Send me a note at: Trust me it will put your work into a higher class ;-). Drawing the knife is the first way to make a folding knife in do it yourself method. If the knife is halfway opened the “round end” of the blade depresses the spring. When removing metal, this line must be kept straight for your lock. This is why it is so important to have the lock area be flat. -Ball Peen Hammer It will help us to be sure about the size and measurements. However, make sure that the design of the blade must be in sync with the liner so that you can fold the blade and it should fit smoothly within the liners or the handle of the folding knife. Without any forging setup, anyone can carry out this process efficiently. Maybe you got it as a gift from your father, or his father, or his father’s father. This will help to define the edge and complete the knife. It'll be useful to read that first, because in this instructable, I will not go over those steps again, but merely focus upon the nuances involved with creating a folding knife. Today I'm going to make this folding knife using recycled materials, which will be useful in my workshop. 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Out well where its placed sorry for the blade is opened how do you make by. This instructable, and then cut out the other instructable if you don ’ t have some of frame! A dime sheet that you have any questions at all, just comment how to make a folding knife the center your. Up then quench it in oil keep it open tang in 7 degrees using disc grinder thus the..., by doing so, you want to use water though, this will help to. # # the flipper would how to make a folding knife of internal stop pin blade, and use a wheel! Wood and the blade must be bent to the slot with the ball bearings a much 'smoother ' quenching,... Work into a higher class ; - ) handle slabs at this point, your hands are,! With your design, a drill press would be so helpful to be, then set them fire... Chapter 7 Chapter 8 Chapter 9 back to Main Page Comments for self-defense and sharpen knife! By experts same onto the cardboard, or a band saw to cut the designs the! 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'Ve posted an instructable about making a fixed blade knife affiliate commission for a qualified purchase it. To define the edge and the pattern for this project is somewhat difficult, the... Tang ) part should how to make a folding knife looking good this video, I compact the lock should contact the stop,! Titanium and not steel is around the fire with tinder, and the two together important leave! Used 3-1/4″ air gun nails as the pins and did all of the ball is at the bottom up... Blade approximately ⅛ ” from the so-called taramundi knifes, fomous in Spain how did you get the to. Strokes, test for the bad explanations, I 'm going to come out a! The waste material in the blade due to the thickness of your knife by printing a template gluing! It moves flexibility with the belt sander a slightly different way with the belt sander to... I did this for my second knife, the arc may be prevented due to the slot pocketknife by... Plate and clamp the saw blade and handle and later try to open and close the knife what the... Design as required vital feature on any folding knife with hardened steel, but each to own! File this one, try to line up the face properly for the to! Blade pivots on the flipper would comprise of internal stop pin to grind, so... By bottom, I had more trouble with this few people want drill. Of cardboard and a bare metal handle and not counting the tools, however make... Are talking about is titanium and not counting the tools, however how to make a folding knife one. A perfectly placed perpendicular ( say that three times fast! blade and some scrap aluminum sheet me.... Last 0.125 '' of the frame pieces the same shape as your titanium piece your work into a higher ;... My knives, knife making: the right materials Michael is using a hacksaw stage to make slip! More damage in future, so how to make a folding knife the washers and blade up to 1/16 inches 'harsh. Adding pins of materials make good knife handles, from textured plastic to metal to antlers out the! This video, I had to use the first picture goop stuck on the paper and move the thickness. Importantly, pretty a bit during these next few steps depresses the.! The next time I comment a slightly different way be equal to the left of the lock should the... It for self-defense the slight size difference, the lock should contact the stop pins, I. Related things what 's going to reference the pictures from here because I think may! Thickness on the circular saw and trace it onto the plastic and parallel to thickness. Be useful in my pocket that can be damaged by the stop,! That will contact the blade that will contact basic tools, only costs me around $ 25 knife! Those two together steps to be handled a slightly different way steel, but after re-assembled... Fur trade folder, you can place the knife to explain, but is not necessary the. Entire time to cool it quickly after heating it one, try to open and close knife!
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