{"id":85352,"date":"2025-03-21T12:22:24","date_gmt":"2025-03-21T10:22:24","guid":{"rendered":"https:\/\/www.rubi.com\/?p=85352"},"modified":"2025-03-21T12:22:32","modified_gmt":"2025-03-21T10:22:32","slug":"what-is-a-grinder","status":"publish","type":"post","link":"https:\/\/www.rubi.com\/en\/blog\/what-is-a-grinder\/","title":{"rendered":"What is a grinder: what it&#8217;s for and why you should use it"},"content":{"rendered":"\n<p>Today,&nbsp;<strong>the angle grinder remains the most widely used portable electric cutter<\/strong>&nbsp;in the construction industry, an important tool in learning <strong><a href=\"https:\/\/www.rubi.com\/en\/blog\/how-to-tile\/\" target=\"_blank\" rel=\"noreferrer noopener\">how to tile<\/a><\/strong> with ceramics, porcelain, and other materials.<\/p>\n\n\n\n<p>At RUBI, we have expanded the&nbsp;<strong>range of CAS products<\/strong>&nbsp;and have included in our catalogue a&nbsp;<strong>lightweight, efficient and cordless grinder<\/strong>, the&nbsp;<a href=\"https:\/\/www.rubi.com\/en\/product\/angle-grinder-tech\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Angle Tech<\/strong>&nbsp;<\/a>, designed to improve cutting precision, ergonomics and safety for the tiler.<\/p>\n\n\n\n<p>In the following article, we&#8217;ll explain&nbsp;<strong>what it&#8217;s for and how to use it<\/strong>. So, if you want to get the most out of yours or are thinking about buying a grinder, keep reading! <\/p>\n\n\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-22e30c96-5ce3-45e1-9802-7fdd7d8af460\"><span class=\"hs-cta-node hs-cta-22e30c96-5ce3-45e1-9802-7fdd7d8af460\" id=\"hs-cta-22e30c96-5ce3-45e1-9802-7fdd7d8af460\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/cta-redirect.hubspot.com\/cta\/redirect\/6786297\/22e30c96-5ce3-45e1-9802-7fdd7d8af460\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-22e30c96-5ce3-45e1-9802-7fdd7d8af460\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/6786297\/22e30c96-5ce3-45e1-9802-7fdd7d8af460.png\"  alt=\"* Do you want to get the guide on How to achieve the best tiling finishes?  Click here and download it for free.\"\/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(6786297, '22e30c96-5ce3-45e1-9802-7fdd7d8af460', {\"useNewLoader\":\"true\",\"region\":\"na1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"632\" src=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_03-1024x632.jpg\" alt=\"what is a grinder\" class=\"wp-image-85385\" srcset=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_03-1024x632.jpg 1024w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_03-300x185.jpg 300w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_03-768x474.jpg 768w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_03.jpg 1181w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What is a grinder?<\/h2>\n\n\n\n<p>A grinder is a\u00a0common\u00a0tool\u00a0in the construction industry, equipped with a high-power motor connected by gears or a coupling to the motor shaft. A <strong><a href=\"https:\/\/www.rubi.com\/en\/categories\/dry-cutting-diamond-blades\" target=\"_blank\" rel=\"noreferrer noopener\">blade<\/a><\/strong> is then attached to the grinder which spins at a high RPM to cut through materials.<\/p>\n\n\n\n<p>Grinder sizes are strictly proportional to the size of the disc used.&nbsp;<strong>Standard sizes are 115 mm, 125 mm, and 230 mm.<\/strong>&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is it for?<\/h2>\n\n\n\n<p>Thanks to their great versatility, a grinder can cut a wide variety of&nbsp;<strong>materials, such as tiles <\/strong>or metal.&nbsp;<strong>It&#8217;s important to use the&nbsp;right blade,<\/strong>&nbsp;and this will depend on the material you&#8217;re cutting. Like all tools, grinders have their pros and cons:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pros:<\/strong>&nbsp;They are more affordable than other tools for cutting tiles. Additionally, their lightweight and versatile design with a high cutting speed makes it an efficient and practical tool.<\/li>\n\n\n\n<li><strong>Cons:<\/strong>&nbsp;Not everyone knows how to properly use a grinder, which can make it dangerous if not handled correctly. In inexperienced hands, the cut quality can be poor, the tool can generate a lot of dust and noise, and in extreme cases can result in serious injuries.<\/li>\n<\/ul>\n\n\n\n<p>Now we know what is a grinder, we present the newest addition to the RUBI catalogue: the <strong>RUBI ANGLE TECH CAS grinder<\/strong>, a new product from the CAS &amp; RUBI Alliance, battery-powered products. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"834\" height=\"1024\" src=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_05-834x1024.jpg\" alt=\"what is a grinder\" class=\"wp-image-85403\" srcset=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_05-834x1024.jpg 834w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_05-244x300.jpg 244w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_05-768x943.jpg 768w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_05.jpg 1181w\" sizes=\"(max-width: 834px) 100vw, 834px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image alignright size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"808\" src=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_02-1024x808.jpg\" alt=\"what is a grinder\" class=\"wp-image-85367\" style=\"width:279px;height:auto\" srcset=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_02-1024x808.jpg 1024w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_02-300x237.jpg 300w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_02-768x606.jpg 768w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_02.jpg 1181w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">RUBI Grinder \u2013 What is the new ANGLE TECH CAS like?<\/h3>\n\n\n\n<p>The new ANGLE TECH angle grinder stands out for its&nbsp;<strong>lightness and versatility<\/strong>, making it a must-have for all professionals in the sector. With a&nbsp;<strong>brushless&nbsp;motor<\/strong>, the RUBI ANGLE TECH ENERGY CAS angle grinder optimises battery life and performance, ensuring prolonged and efficient use. Its&nbsp;<strong>18V CAS<\/strong>&nbsp;battery,&nbsp;<strong>compatible with more than 400 tools<\/strong>, provides unprecedented flexibility. <\/p>\n\n\n\n<p>Furthermore, its&nbsp;<strong>compact size and reduced weight make tile installation easier for installers<\/strong>, improving comfort and precision with each cut. The&nbsp;<strong>125 mm size<\/strong>&nbsp;is ideal for cutting tiles, ensuring precise execution tailored to the needs of professionals.<\/p>\n\n\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-42b78590-1a17-4d0f-b3b5-4857d2eeb49c\"><span class=\"hs-cta-node hs-cta-42b78590-1a17-4d0f-b3b5-4857d2eeb49c\" id=\"hs-cta-42b78590-1a17-4d0f-b3b5-4857d2eeb49c\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/cta-redirect.hubspot.com\/cta\/redirect\/6786297\/42b78590-1a17-4d0f-b3b5-4857d2eeb49c\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-42b78590-1a17-4d0f-b3b5-4857d2eeb49c\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/6786297\/42b78590-1a17-4d0f-b3b5-4857d2eeb49c.png\"  alt=\"New call-to-action\"\/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(6786297, '42b78590-1a17-4d0f-b3b5-4857d2eeb49c', {\"useNewLoader\":\"true\",\"region\":\"na1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n\n\n\n<h2 class=\"wp-block-heading\">What should we consider when choosing a grinder?<\/h2>\n\n\n\n<p>Below, we&#8217;ll detail the key aspects to consider when choosing a grinder, so you can get a thorough understanding of the tool. We&#8217;ll also explore its features and offer guidelines for safe and effective use.<\/p>\n\n\n\n<p>As with other electric cutters, grinders typically <strong>come in different sizes<\/strong>,&nbsp;<strong>power ratings, and blade diameters<\/strong>. This means we can distinguish two main groups:&nbsp;<strong>large volume grinders and mini grinders.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mini grinders<\/h3>\n\n\n\n<p>These are the most recommended for&nbsp;<strong>internal tile installation<\/strong>&nbsp;and cutting and machining of other thin-walled materials. They typically have a&nbsp;<strong>diameter of 115 mm to 125 mm<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_07-683x1024.jpg\" alt=\"what is a grinder\" class=\"wp-image-85413\" srcset=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_07-683x1024.jpg 683w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_07-200x300.jpg 200w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_07-768x1152.jpg 768w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_07-1024x1536.jpg 1024w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_07.jpg 1181w\" sizes=\"(max-width: 683px) 100vw, 683px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Large volume grinders<\/h3>\n\n\n\n<p><strong><a href=\"https:\/\/www.screwfix.com\/c\/tools\/angle-grinders\/cat830694?bladediameterimperial=9__\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Large volume grinders<\/a><\/strong> are much larger and heavier than the previous models, typically with a\u00a0<strong><a href=\"https:\/\/www.protilertools.co.uk\/product\/rubi-tcr-superpro-dry-cut-turbo-diamond-blade--choice-of-size--?gad_source=1&amp;gclid=CjwKCAjwnPS-BhBxEiwAZjMF0v8Nr_Wb_Kb9OFsm0pfPwKMPpi1xoUI9B-9oDLzs1WVT_iec3IcilBoC3isQAvD_BwE\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">diameter of 230 mm<\/a><\/strong>, but we can also find them in 180 mm. They are much more robust and are primarily used for cutting and grinding construction materials, including metals.<\/p>\n\n\n\n<p><strong>In the following video you will discover the features of the RUBI ANGLE TECH grinder.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Selecting a grinder according to the type of work<\/h2>\n\n\n\n<p>If you want a grinder for occasional&nbsp;or moderate-frequency&nbsp;<strong>work on small surfaces, a&nbsp;mini grinder<\/strong>&nbsp;is usually the best solution, such as the RUBI Angle Tech.<\/p>\n\n\n\n<p>However, if we need&nbsp;<strong>to do very frequent and intensive work<\/strong>&nbsp;on large, thick materials, the best option will be a&nbsp;<strong>large volume grinder.<\/strong><\/p>\n\n\n\n<p>The power and larger size of these grinders means they are designed to work longer hours, and we will find it much more comfortable to endure a more intense work routine.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Main features of a grinder<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Functions<\/h3>\n\n\n\n<p>Typically, mini grinders have a single working speed. Therefore, it&#8217;s important to keep in mind that if we want to expand the range of functions (polishing or precision work), we should consider purchasing a grinder with speed control. However, some variable speed grinders do also exist in the market.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Security<\/h3>\n\n\n\n<p>The next aspect to consider concerns <strong>safety<\/strong>&nbsp;<strong>at work<\/strong>&nbsp;and tool control.&nbsp;<strong>It&#8217;s important that our grinder has a soft start<\/strong>, overcurrent protection, and protection against unintentional start-up.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">New RUBI grinder: a commitment to ergonomics and safety at work<\/h3>\n\n\n\n<p>With the launch of this new tool, RUBI expands its CAS product portfolio, focusing on safety and ergonomics in the workplace.<\/p>\n\n\n\n<p>Specifically designed for more comfortable and efficient everyday use, its&nbsp;<strong>cordless design allows for complete mobility<\/strong>, while the tool-free, adjustable protective cover improves handling and safety.<\/p>\n\n\n\n<p>It also&nbsp;<strong>incorporates an electronic safety disconnect<\/strong>&nbsp;that reduces kickback in the event of a disk jam, and an overload protection system that prevents the motor from overheating.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"614\" src=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_04-1024x614.jpg\" alt=\"what is a grinder\" class=\"wp-image-85394\" srcset=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_04-1024x614.jpg 1024w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_04-300x180.jpg 300w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_04-768x460.jpg 768w, https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_04.jpg 1181w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Accessories<\/h3>\n\n\n\n<p>Finally, the quality and variety of the grinder&#8217;s accessories will also be of significant importance. We must consider additional handles, adjustable blade guards, and the geometry and ergonomics of the main handle.<\/p>\n\n\n\n<p>The&nbsp;<strong>ergonomics and geometry of the handle will be a key point,<\/strong>&nbsp;especially in mini grinders, as it will give us better control over the tool while allowing us to work more comfortably.<\/p>\n\n\n\n<p>Remember that when working with standard or mini grinders,&nbsp;<strong>you must wear protective eyewear, a mask, and gloves<\/strong>, as well as the appropriate and necessary clothing at all times.<\/p>\n\n\n\n<p>Finally, when working, and especially when cutting a material, there are a number of basic aspects to consider:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>We&#8217;ll always work in a comfortable position<\/strong>, avoiding the cutting line. Ideally, we should position ourselves parallel to the cut.<\/li>\n\n\n\n<li><strong>The cutting direction should always be in the same direction as the blade&#8217;s rotation.<\/strong>&nbsp;This way, we&#8217;ll avoid the so-called &#8220;kickback effect&#8221; from working against us.<\/li>\n\n\n\n<li><strong>Always work with the disc guard securely fastened<\/strong>&nbsp;and oriented so that dust or sparks are directed away from us.<\/li>\n\n\n\n<li>It is important&nbsp;<strong>to hold the tool firmly<\/strong>&nbsp;with both hands.<\/li>\n<\/ul>\n\n\n\n<p>With these tips you can <strong>confidently choose the right grinder<\/strong> for the work you do, and make sure you\u2019re keeping yourself and others safe at work by following the outlined safety guidelines.<\/p>\n\n\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-53051bb3-c1a3-48a7-9c53-f58e31bd800b\"><span class=\"hs-cta-node hs-cta-53051bb3-c1a3-48a7-9c53-f58e31bd800b\" id=\"hs-cta-53051bb3-c1a3-48a7-9c53-f58e31bd800b\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/cta-redirect.hubspot.com\/cta\/redirect\/6786297\/53051bb3-c1a3-48a7-9c53-f58e31bd800b\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"hs-cta-img\" id=\"hs-cta-img-53051bb3-c1a3-48a7-9c53-f58e31bd800b\" style=\"border-width:0px;\" src=\"https:\/\/no-cache.hubspot.com\/cta\/default\/6786297\/53051bb3-c1a3-48a7-9c53-f58e31bd800b.png\"  alt=\"New call-to-action\"\/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(6786297, '53051bb3-c1a3-48a7-9c53-f58e31bd800b', {\"useNewLoader\":\"true\",\"region\":\"na1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n","protected":false},"excerpt":{"rendered":"<p>Today,&nbsp;the angle grinder remains the most widely used portable electric cutter&nbsp;in the construction industry, an important tool in learning how to tile with ceramics, porcelain, and other materials. At RUBI, we have expanded the&nbsp;range of CAS products&nbsp;and have included in our catalogue a&nbsp;lightweight, efficient and cordless grinder, the&nbsp;Angle Tech&nbsp;, designed to improve cutting precision, ergonomics &hellip; <a href=\"https:\/\/www.rubi.com\/en\/blog\/what-is-a-grinder\/\">Continued<\/a><\/p>\n","protected":false},"author":37,"featured_media":85385,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[119],"tags":[2389,822],"class_list":["post-85352","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rubi-tools","tag-angle-grinder","tag-rubi-tools"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is a grinder: what it&#039;s for and why you should use it<\/title>\n<meta name=\"description\" content=\"What is a grinder? This versatile tool is one of the most useful in the tiling and construction industry, and a must have in your kit.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is a grinder: what it&#039;s for and why you should use it\" \/>\n<meta property=\"og:description\" content=\"What is a grinder? This versatile tool is one of the most useful in the tiling and construction industry, and a must have in your kit.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rubi.com\/en\/blog\/what-is-a-grinder\/\" \/>\n<meta property=\"og:site_name\" content=\"Welcome to the RUBI Tools Blog!\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.instagram.com\/rubitools\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-21T10:22:24+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-21T10:22:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rubi.com\/en\/blog\/wp-content\/uploads\/2025\/03\/52949_a_03.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1181\" \/>\n\t<meta property=\"og:image:height\" content=\"729\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Emily\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@RubiTools_Es\" \/>\n<meta name=\"twitter:site\" content=\"@RubiTools_Es\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Emily\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What is a grinder: what it's for and why you should use it","description":"What is a grinder? 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