{"id":26214,"date":"2023-06-25T09:58:20","date_gmt":"2023-06-25T01:58:20","guid":{"rendered":"https:\/\/shieldon.wpenginepowered.com\/?p=26214"},"modified":"2023-07-04T11:12:01","modified_gmt":"2023-07-04T03:12:01","slug":"opening-and-locking-how-a-folding-knife-operates","status":"publish","type":"post","link":"https:\/\/www.shieldon.net\/tl\/opening-and-locking-how-a-folding-knife-operates\/","title":{"rendered":"Opening and Locking &#8211; How a Folding Knife Operates"},"content":{"rendered":"<p>I doubt many would consider the <a href=\"https:\/\/www.shieldon.net\/tl\/shieldon-pocket-kutsilyo\/\">folding knife<\/a> to be one of the greatest developments in the history of edged tools.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26216\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-01.jpg\" alt=\"\" width=\"800\" height=\"808\" \/><\/p>\n<p>Over the years, manufacturers have devised many methods of opening and securing blades, some fairly simple, others quite unique and complex.<\/p>\n<p>&nbsp;<\/p>\n<p>Assuming you&#8217;re buying a knife that you can use, rather than one you&#8217;re buying just for aesthetics, the mechanism used in the design should be a factor in your buying decision. If a knife is awkward to open and close, chances are it won&#8217;t be carried very often.<\/p>\n<p>&nbsp;<\/p>\n<p>Below are some of the more popular cutting styles.<\/p>\n<p>&nbsp;<\/p>\n<h2>Open method<\/h2>\n<ol>\n<li><strong> Nail scratches<\/strong><\/li>\n<\/ol>\n<p>This is probably the most common feature, and one that most of us have in our early knife collections. This is simple. There is a small groove along the ridge of the blade.<\/p>\n<p>&nbsp;<\/p>\n<p>To open the knife, you grab that point on the blade and open it. This basic design has several advantages. Structurally, this is the cheapest.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26217\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-02.jpg\" alt=\"\" width=\"800\" height=\"470\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-02.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-02-300x176.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-02-150x88.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-02-768x451.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-02-18x12.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Nail scoring is simple and has been used for many years.<\/p>\n<p>&nbsp;<\/p>\n<p>It&#8217;s also very safe since it usually requires two hands to open the knife. However, this is also its downside, as it is very difficult, though not impossible, to open such a knife with one hand.<\/p>\n<p>&nbsp;<\/p>\n<ol start=\"2\">\n<li><strong> Thumb stud<\/strong><\/li>\n<\/ol>\n<p>Knives with thumb studs became popular in the 1980s, although they were available before then, as I recall. You can even buy studs to attach to pocketknives that don&#8217;t come with studs yet.<\/p>\n<p>&nbsp;<\/p>\n<p>The idea is basically to take a regular slide-joint knife and make it easy to open with one hand. You simply push the stud with your thumb, rotate the blade up, and open.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26218\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-03.jpg\" alt=\"\" width=\"800\" height=\"540\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-03.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-03-300x203.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-03-150x101.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-03-768x518.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-03-18x12.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Thumb studs became very popular in the 1980s and are still used today.<\/p>\n<p>&nbsp;<\/p>\n<p>Knife spikes are usually right-handed or left-handed, although some folding knives will have a spike on either side of the spine. &#8220;When you hold the knife in your hand, the movement is instinctive and effortless.&#8221;<\/p>\n<p>&nbsp;<\/p>\n<ol start=\"3\">\n<li><strong> Thumb hole<\/strong><\/li>\n<\/ol>\n<p>Primarily a Spyderco design, which is a variation on the thumbnail idea. The knife is designed with a large hole along the spine. The spine itself curves upwards to make room for this feature.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26219\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-04.jpg\" alt=\"\" width=\"800\" height=\"379\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-04.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-04-300x142.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-04-150x71.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-04-768x364.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-04-18x9.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>One of the Spyderco&#8217;s signature features is the thumbhole on the spine of the blade.<\/p>\n<p>&nbsp;<\/p>\n<p>In operation, it works like a thumb tack, but instead of pushing on a small metal outcrop, it pushes on the inside of the hole in the blade. This design is flexible.<\/p>\n<p>&nbsp;<\/p>\n<ol start=\"4\">\n<li><strong> Fins<\/strong><\/li>\n<\/ol>\n<p>With a smooth knife action, the fins can open as fast as an automatic knife. When the knife is closed, something like a small lever is raised along the back of the handle, near the pivot. Pulling that lever with one finger swings the blade into place.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26220\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-05.jpg\" alt=\"\" width=\"800\" height=\"595\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-05.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-05-300x223.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-05-150x112.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-05-768x571.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-05-16x12.jpg 16w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Fin open knives are very popular, and they open as fast as automatic knives.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26221\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-06.jpg\" alt=\"\" width=\"800\" height=\"465\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-06.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-06-300x174.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-06-150x87.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-06-768x446.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-06-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>When you hold a knife, the action is instinctive and effortless. As a bonus, when the knife is open, the flipper becomes a small gauntlet.<\/p>\n<p>&nbsp;<\/p>\n<ol start=\"5\">\n<li><strong> Automatically<\/strong><\/li>\n<\/ol>\n<p>It may be a button or a slider, but when it is activated, the spring action is released and the blade goes into position. You&#8217;ll often find this slide on OTF cars, while the button is more common on switchblade type knives.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26222\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-07.jpg\" alt=\"\" width=\"800\" height=\"351\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-07.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-07-300x132.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-07-150x66.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-07-768x337.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-07-18x8.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>An example of an automatic knife<\/p>\n<p>&nbsp;<\/p>\n<p>While laws are becoming more lenient in some areas, it&#8217;s worth taking the time to verify the legality of an automatic pistol before you throw it in your pocket and head to work.<\/p>\n<p>&nbsp;<\/p>\n<ol start=\"6\">\n<li><strong> Auxiliary opening<\/strong><\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26223\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-08.jpg\" alt=\"\" width=\"800\" height=\"145\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-08.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-08-300x54.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-08-150x27.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-08-768x139.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-08-18x3.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>This is number 71 from Great Eastern Tableware. This is a classic design slip joint knife.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26224\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-09.jpg\" alt=\"\" width=\"800\" height=\"548\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-09.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-09-300x206.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-09-150x103.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-09-768x526.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-09-18x12.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>The Emerson Wave is the shape of the hook on the top of the blade, and when you pull the knife out, it hooks into your pocket, opening the knife open.<\/p>\n<p>&nbsp;<\/p>\n<p>It&#8217;s kind of like an automatic light. You need to initiate the movement of the blade, say via a thumb post, and once the blade reaches a certain point, it automatically pops open.<\/p>\n<p>&nbsp;<\/p>\n<h2>lock method<\/h2>\n<ol>\n<li><strong> Back lock<\/strong><\/li>\n<\/ol>\n<p>Many of us had a lockback knife or two in our youth, usually a Buck 110 or a copy or clone of it. When the blade is open, the rocker arm locks into a notch on the bottom of the blade, securing it in place. Pushing the back lock moves the arm out of position and allows the blade to fold shut.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26225\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-10.jpg\" alt=\"\" width=\"800\" height=\"356\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-10.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-10-300x134.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-10-150x67.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-10-768x342.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-10-18x8.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>The Buck 110 is a lockback knife. when the blade is open<\/p>\n<p>&nbsp;<\/p>\n<ol start=\"2\">\n<li><strong> Liner lock<\/strong><\/li>\n<\/ol>\n<p>In this very common model, a tensioning rod inside the knife slides into place under the blade when it snaps into the open position. It stays there, keeping the blade secure until you manually push it aside and close the blade. This can be a very safe mechanism, depending on how well the rod engages the blade.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26226\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-11.jpg\" alt=\"\" width=\"800\" height=\"453\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-11.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-11-300x170.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-11-150x85.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-11-768x435.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-11-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>A wire lock uses a thin metal rod that wedges into place under the blade when the knife is opened. Move it aside with your thumb or finger to close the cutter.<\/p>\n<p>&nbsp;<\/p>\n<ol start=\"3\">\n<li><strong> Frame lock<\/strong><\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26227\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-12.jpg\" alt=\"\" width=\"800\" height=\"411\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-12.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-12-300x154.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-12-150x77.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-12-768x395.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-12-18x9.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>The frame lock has a piece of metal that fits under the blade of the folding knife. But in this case, it&#8217;s part of the frame, not the padding.<\/p>\n<p>&nbsp;<\/p>\n<p>This is very similar to a linear lock. The difference is that the locking bar is not inside the liner, but part of the actual frame of the knife. This locking mechanism was invented by Chris Reeve of Chris Reeve Knife Company.<\/p>\n<p>&nbsp;<\/p>\n<ol start=\"4\">\n<li><strong> Button lock<\/strong><\/li>\n<\/ol>\n<p>Typically found on automatic knives, a push button lock consists of a cylinder of sorts that rests on the bottom of the opened blade. To close the knife, you press the button, which slides a cutout section of the cylinder under the blade, allowing it to fold shut.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26228\" src=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-13.jpg\" alt=\"\" width=\"800\" height=\"379\" srcset=\"https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-13.jpg 800w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-13-300x142.jpg 300w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-13-150x71.jpg 150w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-13-768x364.jpg 768w, https:\/\/www.shieldon.net\/wp-content\/uploads\/2023\/07\/Folding-Knife-Operates-13-18x9.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>The button lock moves the cylinder inside the knife, which then allows the knife to close.<\/p>\n<p>&nbsp;<\/p>\n<p>There are many proprietary mechanisms on the market, often brand-specific, such as the ring lock on Opinel folding knives.<\/p>\n<p>&nbsp;<\/p>\n<p>The important thing to consider when buying a folding knife is how you are going to use it and how that translates into the on\/off mechanism you find most useful. Having at least a basic understanding of how each knife opens and closes can help you make a more informed choice in this regard.<\/p>\n<p>&nbsp;<\/p>\n<p>For example, if you&#8217;re looking for a pocketknife that can be used as a defensive weapon in a pinch, you&#8217;ll want something that can be opened with one hand. If you&#8217;re going to be doing any heavy work with this knife, you&#8217;ll want the strongest locking option you can find.<\/p>\n<p>&nbsp;<\/p>\n<p>Click to have more Shieldon <a href=\"https:\/\/www.shieldon.net\/tl\/tungkol-shieldon\/\">EDC knives and tools<\/a> fun.<\/p>","protected":false},"excerpt":{"rendered":"<p>I doubt many would consider the folding knife to be one of the greatest developments in the history of edged tools. Over the years, manufacturers have devised many methods of opening and securing blades, some fairly simple, others quite unique and complex. &nbsp; Assuming you&#8217;re buying a knife that you can use, rather than one [&hellip;]<\/p>","protected":false},"author":2,"featured_media":26216,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[457,100],"class_list":["post-26214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-entertainment","tag-edc-knives-and-tools","tag-folding-knife"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.1 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Opening and Locking - How a Folding Knife Operates - Shieldon<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.shieldon.net\/tl\/opening-and-locking-how-a-folding-knife-operates\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Opening and Locking - How a Folding Knife Operates - Shieldon\" \/>\n<meta property=\"og:description\" content=\"I doubt many would consider the folding knife to be one of the greatest developments in the history of edged tools. 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