{"id":2617,"date":"2022-12-01T04:23:41","date_gmt":"2022-12-01T04:23:41","guid":{"rendered":"https:\/\/www.nccuttingtools.com\/?p=2617"},"modified":"2023-01-16T09:26:57","modified_gmt":"2023-01-16T09:26:57","slug":"cold-saw-blade-sharpening-guide","status":"publish","type":"post","link":"https:\/\/www.nccuttingtools.com\/cold-saw-blade-sharpening-guide.html","title":{"rendered":"Cold Saw Blade Sharpening Guide: 7 things you should know"},"content":{"rendered":"\n<p>If you have been using your <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cold_saw\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">cold saw blade<\/a> well enough, you would know that, eventually, it would become blunt. It is, therefore, essential to be aware of the maintenance practices required to keep it in good shape. These practices center around the sharpening of the cold saw blades. You, therefore, need to understand the basics of cold <a class=\"wpil_keyword_link\" href=\"https:\/\/www.nccuttingtools.com\/circular-saw-blade-sharpening.html\" title=\"saw blade sharpening\" data-wpil-keyword-link=\"linked\">saw blade sharpening<\/a>&#8211; the pros and cons, etc. This article focuses on addressing all your concerns and worries as regards <a href=\"https:\/\/www.nccuttingtools.com\/cold-saw-blade\" target=\"_blank\" rel=\"noreferrer noopener\">cold saw blade<\/a> sharpening.<\/p>\n\n\n\n<p>Set of a circular cold saw blade used for metal cutting<\/p>\n\n\n<h2 class=\"simpletoc-title\">Table of Contents<\/h2>\n<ul class=\"simpletoc-list\">\n<li><a href=\"#1-what-factors-affect-sharpening\">1. What Factors Affect Sharpening?<\/a>\n\n\n<ul><li>\n<a href=\"#i-cold-saw-blade-tip\">I. Cold saw blade tip:<\/a>\n\n<\/li>\n<li><a href=\"#ii-nature-of-metal\">ii. Nature of metal:<\/a>\n\n<\/li>\n<\/ul>\n<li><a href=\"#2-when-do-i-need-to-sharpen\">2. When Do I Need To Sharpen?<\/a>\n\n<\/li>\n<li><a href=\"#3-how-often-do-i-sharpen\">3. How Often Do I Sharpen?<\/a>\n\n<\/li>\n<li><a href=\"#4-what-should-i-pay-attention-to-when-sharpening\">4. What Should I Pay Attention To When Sharpening?<\/a>\n\n\n<ul><li>\n<a href=\"#i-hook-angle\">i. Hook angle:<\/a>\n\n<\/li>\n<li><a href=\"#ii-tooth-thickness\">ii. Tooth thickness:<\/a>\n\n<\/li>\n<\/ul>\n<li><a href=\"#5-pricing-and-costing\">5. Pricing And Costing?<\/a>\n\n<\/li>\n<li><a href=\"#6-mode-of-sharpening\">6. Mode Of Sharpening?<\/a>\n\n\n<ul><li>\n<a href=\"#imanual-semiautomated-filing\">i.Manual\/ Semi-Automated Filing:<\/a>\n\n<\/li>\n<li><a href=\"#ii-machine-filing\">ii. Machine Filing:<\/a>\n\n<\/li>\n<\/ul>\n<li><a href=\"#7-what-to-avoid-when-sharpening\">7. What To Avoid When Sharpening?<\/a>\n\n<\/li>\n<li><a href=\"#conclusion\">Conclusion<\/a>\n<\/li><\/ul>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" src=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/0-8.jpg\" alt=\"Set of a circular cold saw blade used for metal cutting.\" class=\"wp-image-2618\" srcset=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/0-8.jpg 400w, https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/0-8-300x300.jpg 300w, https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/0-8-150x150.jpg 150w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\">Figure 1: Set of a circular cold saw blade used for metal cutting.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"1-what-factors-affect-sharpening\">1. What Factors Affect Sharpening?<\/h2>\n\n\n<p>The act of sharpening your cold saw blade revolves around some factors. These factors help you determine how to sharpen your cold saw blade. Failure to consider these various factors can cause improper sharpening and job delay. It would translate to the poor performance of your cold-cut saw blade and loss of money and sometimes valuable customers. Below are the factors:<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-cold-saw-blade-tip\"><strong>I. Cold saw blade tip:<\/strong><\/h3>\n\n\n<p>For an excellent performance of cold saw blades when cutting different metals, they are typically manufactured and finished at the tip\/teeth with either HSS (high-speed steel) or Carbide. Although Carbide tipped cold saw blades are powerful and tend to last long due to the hard nature of Carbide, this makes the sharpening somewhat tricky as well. Unlike the HSS-tipped cold saw blade, which is relatively easier to sharpen but has lesser cutting ability than carbide-tipped.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"ii-nature-of-metal\"><strong>ii. Nature of metal:<\/strong><\/h3>\n\n\n<p>Mild steel, <a href=\"https:\/\/www.nccuttingtools.com\/cutting-stainless-steel.html\">Stainless steel<\/a>, Aluminium, etc., are among the numerous metals a cold saw blade can easily cut. Cold saw blades would have varying performance due to the type of metal they cut- This implies that the blades&#8217; teeth would get blunt quickly depending on how strong the metal it cuts is. Hollow or solid metal rods or bars also contribute to the wear of a blade, so does it contribute to the sharpening.<\/p>\n\n\n\n<p>Close-up picture of Carbide tipped cold cut saw blade<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"427\" src=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/1-5.jpg\" alt=\"Close-up picture of Carbide tipped cold cut saw blade\" class=\"wp-image-2624\" srcset=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/1-5.jpg 640w, https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/1-5-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\">Figure 2: Close-up picture of Carbide tipped cold cut saw blades<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"2-when-do-i-need-to-sharpen\"><strong>2. When Do I Need To Sharpen?<\/strong><\/h2>\n\n\n<p>Usually, it is left to you to determine when to sharpen your blade(s) based on its performance. Remember that for every sharpening of the blade&#8217;s tooth, some portion of the blade gets ground off- This further affects all the critical angles of a typical blade, which alters the original dimensions of your blades. <\/p>\n\n\n\n<p>The implication is that you should only sharpen your blade when the teeth become blunt and cannot cut anymore or take longer than usual. Hence, no rigid or specific date is attached to sharpening your cold saw blades. In essence, plan to sharpen your blade only when it can no longer cut your desired metals. The best you can do is to estimate the average period your blade last before getting blunt based on your usage. Finally, kindly note that whatever works for you might not work for others, so stick to your unique sharpening plan and schedule.<\/p>\n\n\n\n<p>The performance of your cold saw blades can be measured using the following yardsticks:<\/p>\n\n\n\n<p>Increment in tear-out and chipping during cutting<br>Higher resistance to cutting<br>Difficulty in following cut lines<br>Increase in the noise of electric\/saw motor<br>Signs of wear and damage.<br>Inspection all teeth<\/p>\n\n\n\n<p>Close-up picture of a blade undergoing sharpening<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"468\" src=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/2-5.jpg\" alt=\"Close-up picture of a blade undergoing sharpening\" class=\"wp-image-2625\" srcset=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/2-5.jpg 640w, https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/2-5-300x219.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\">Figure 3: Close-up picture of a blade undergoing sharpening.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"3-how-often-do-i-sharpen\">3. How Often Do I Sharpen?<\/h2>\n\n\n<p>Larger diameter cold saw blades can be re-sharpened and re-used up to about 15 to 20 times before discarding and replacing with a new one. Discard the small-diameter blade.<\/p>\n\n\n\n<p>The carbide-tipped cold saw can be re-sharpened up to 4 or 5 times. Again, a rough estimation shows that freshly sharpened blades last between 15 to 20 cuts before it gets blunt still.<br>The type of metal to cut also contributes to how frequently you sharpen your blades. If you cut Aluminium more than steel, then your cold saw blade is likely to get blunt earlier than that.<\/p>\n\n\n\n<p>Sharpening of blade ongoing<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"427\" src=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/3-5.jpg\" alt=\"Sharpening of blade on-going\" class=\"wp-image-2626\" srcset=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/3-5.jpg 640w, https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/3-5-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\">Figure 4: Sharpening of blade ongoing.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"4-what-should-i-pay-attention-to-when-sharpening\">4. What Should I Pay Attention To When Sharpening?<\/h2>\n\n\n<p>When sharpening your blade, key factors to pay careful attention to are as follows:<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-hook-angle\"><strong>i. Hook angle:<\/strong><\/h3>\n\n\n<p>It is important not to tamper with the hook angle of the cold saw blades as this can negatively affect the blade&#8217;s balance when mounted for use and can even give an inferior cutting surface finish to the workpiece.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"ii-tooth-thickness\"><strong>ii. Tooth thickness:<\/strong><\/h3>\n\n\n<p>A common rule of thumb is that you never let your cold saw blades get blunter than 0.008&#8242; (8\/1,000 inches) edge radius. The maximum allowable bluntness is 0.004&#8242;, which is the same as the thickness of a piece of paper.<\/p>\n\n\n\n<p>Showing tooth thickness and hook angle of a cold cut saw blade<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"362\" src=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/4-5.jpg\" alt=\"Showing tooth thickness and hook angle of a cold cut saw blade\" class=\"wp-image-2627\" srcset=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/4-5.jpg 640w, https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/4-5-300x170.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\">Figure 5: Showing tooth thickness and hook angle of a cold cut saw blade<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"5-pricing-and-costing\">5. Pricing And Costing?<\/h2>\n\n\n<p>The cost of sharpening a typical cold saw blade is $10 to $20 for a 10 to 14-inch diameter cold saw blade. Prices vary with the diameter and number of teeth of the blade. In the cold saw blade sharpening business, the cost of sharpening an HSS-tipped cold saw blade is solely based on the blade diameter, while for a carbide-tipped blade, the price is dependent on the number of teeth. In simpler terms, a 20&#8243; or 100&#8243; carbide-tipped blade would cost the same to sharpen but differ if it is an HSS-tipped. As the number of blades you intend to sharpen increases, so does the discount on the price.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"6-mode-of-sharpening\">6. Mode Of Sharpening?<\/h2>\n\n\n<p>Over time, technological advancement has made sharpening blade an effortless job. Nowadays, you can purchase a personal sharpening machine, and with the manual, you can efficiently operate and do your sharpening yourself. Although there are two major ways to go about sharpening your blade, namely:<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"imanual-semiautomated-filing\"><strong>i.Manual\/ Semi-Automated Filing:<\/strong><\/h3>\n\n\n<p>This involves using a circular saw to sharpen the teeth of cold saw blades one after the other. In doing this, ensure you wear the appropriate safety gear to protect yourself from the hot chips. Firstly, you remove the cold saw blade from the table and mount that on the circular saw. Next, you use a jig to hold the cold-cut saw blade in place. Once you set up the arrangement, start the electric motor saw blade next to the cold saw blade across the tooth one after the other. Make sure to mark the point you started so you can stop at that point too.<\/p>\n\n\n\n<p>On the other hand, a hand file can also do the job of sharpening. You can place the hand file at an angle of 20 degrees against the teeth and stroke 3 to 4 times across each tooth.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"ii-machine-filing\"><strong>ii. Machine Filing:<\/strong><\/h3>\n\n\n<p>Machines eliminate human intervention in sharpening. Machines are either four or six-axis servo-controlled -they grind the face, top, and every angle of the tooth just in one pass. This machine saves time and effort. This machine is fully automated with an LED screen to instruct the operator on what to do. The cutting angle, blade diameter, and blade thickness are the required input needed to start the sharpening.<\/p>\n\n\n\n<p>CNC automatic sharpening of a circular cold-cut blade<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/5-3.jpg\" alt=\"CNC automatic sharpening of a circular cold cut blade\" class=\"wp-image-2628\" srcset=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/5-3.jpg 640w, https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/5-3-300x225.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\">Figure 6: CNC automatic sharpening of a circular cold cut blade.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"7-what-to-avoid-when-sharpening\">7. What To Avoid When Sharpening?<\/h2>\n\n\n<p>If you have decided to carry out sharpening yourself, then you might need to take note of the following preventive measures to avoid injuries or accidents of any form:<\/p>\n\n\n\n<p>1. Put off the electrical switch and socket when switching the cold saw blades for the <a href=\"https:\/\/www.nccuttingtools.com\/diamond-saw-blade-manufacturer\">diamond saw blade<\/a>.<\/p>\n\n\n\n<p>2. Use safety goggles to avoid fine chips from entering your eye.<\/p>\n\n\n\n<p>3. Safety gloves and ear-muffs are also essential to prevent cuts to the hands and unbearable noise.<\/p>\n\n\n\n<p>Operator wearing a glove and other protective wear as he cuts metal<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"427\" src=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/6-7.jpg\" alt=\"Operator wearing a glove and other protective wears as he cuts metal\" class=\"wp-image-2630\" srcset=\"https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/6-7.jpg 640w, https:\/\/www.nccuttingtools.com\/wp-content\/uploads\/2020\/04\/6-7-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center\">Figure 7: Operator wearing a glove and other protective wear as he cuts metal.<\/p>\n\n\n<h2 class=\"has-text-align-left wp-block-heading\" id=\"conclusion\">Conclusion<\/h2>\n\n\n<p>In summary, having read through this article, you should be able to determine if you need to sharpen your cold saw blades and other related matters arising from sharpening. <a href=\"https:\/\/www.nccuttingtools.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">NCCuttingtools<\/a> is known to be the number-one solution provider on saw blades and similar related services at the most competitive price you can find in the market. Do well to contact and partner with us on your next cutting tool project; we are sure you will not be disappointed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p> &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Cold Saw Blade Sharpening Guide: 7 things you should know\" class=\"read-more button\" href=\"https:\/\/www.nccuttingtools.com\/cold-saw-blade-sharpening-guide.html#more-2617\" aria-label=\"More on Cold Saw Blade Sharpening Guide: 7 things you should know\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":2618,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cold Saw Blade Sharpening Guide: 7 things you should know<\/title>\n<meta name=\"description\" content=\"If you have been using your\u00a0cold saw blade\u00a0well enough, you would know that eventually, it would become blunt.Read the article.\" \/>\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.nccuttingtools.com\/cold-saw-blade-sharpening-guide.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cold Saw Blade Sharpening Guide: 7 things you should know\" \/>\n<meta property=\"og:description\" content=\"If you have been using your\u00a0cold saw blade\u00a0well enough, you would know that eventually, it would become blunt.Read the article.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.nccuttingtools.com\/cold-saw-blade-sharpening-guide.html\" \/>\n<meta property=\"og:site_name\" content=\"NCcuttingtools.com: We spend countless hours testing tools; 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