![\"Cutting](\"https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/06\/Cutting-Germanium-Lenses1-1024x576.webp\" "\\"Thi\u1ebft")
Germanium behaves like a fragile piece of glass when under force:<\/p>\n\n\n\n
- \n
- Low fracture toughness<\/strong> means it cracks easily<\/li>\n\n\n\n
- Thermal sensitivity<\/strong> causes stress if it gets too warm<\/li>\n\n\n\n
- Surface finish matters<\/strong>\u2014IR optics need smooth, chip-free surfaces<\/li>\n<\/ul>\n\n\n\n
These factors make it a poor match for high-friction, high-pressure cutting tools.<\/p>\n\n\n\n
Traditional Blade Cutting<\/strong><\/h2>\n\n\n\n
The Problems<\/strong> Using dicing saws, ID blades, or abrasive wheels might seem straightforward\u2014but here\u2019s what usually happens:<\/p>\n\n\n\n
- \n
- Chipping along the cut edges<\/li>\n\n\n\n
- Internal stress that shows up in polishing<\/li>\n\n\n\n
- Significant kerf loss (sometimes >1 mm)<\/li>\n\n\n\n
- Blade wear and high consumable costs<\/li>\n<\/ul>\n\n\n\n
Here is a picture of what would happen if you do not choose a correct cut method.<\/p>\n\n\n\n
![\"Processing](\"https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/06\/germanium-wafer-cutting-1024x530.webp\" "\\"Thi\u1ebft")
Loop-type diamond wire saw for graphite,optical glass and so on.<\/figcaption><\/figure>\n\n\n\n Diamond Wire Cutting: A Smarter Approach<\/strong> <\/h2>\n\n\n\n
Diamond wire saws operate with a fine loop of diamond-coated wire moving at controlled speeds. The wire tension, feed rate, and coolant are all adjustable, allowing it to adapt to germanium\u2019s quirks.<\/p>\n\n\n\n
Key benefits:<\/p>\n\n\n\n
- \n
- Thin kerf (as small as 0.35 mm)<\/strong> = more parts per crystal<\/li>\n\n\n\n
- No thermal damage<\/strong> = better optical properties preserved<\/li>\n\n\n\n
- Gentle slicing<\/strong> = fewer microcracks, lower polishing time<\/li>\n\n\n\n
- Stable process<\/strong> = easy to repeat, scale, and automate<\/li>\n<\/ul>\n\n\n\n
This is a picture of how it looks when you use Vimfun diamond wire saw to cut Ge.<\/p>\n\n\n\n
![\"Cutting](\"https:\/\/www.opticalcutting.com\/wp-content\/uploads\/2025\/06\/Cutting-Germanium-Lenses5-1024x576.webp\" "\\"Thi\u1ebft")
Loop-type diamond wire saw for graphite,optical glass and so on.<\/figcaption><\/figure>\n\n\n\n Why SG20 and SGI20 Excel at Cutting Ge<\/strong> <\/h2>\n\n\n\n
At Vimfun, we\u2019ve engineered equipment to work specifically with brittle optical crystals like Ge:<\/p>\n\n\n\n
- \n
- SG20<\/a><\/strong>: Reliable, compact, and perfect for clean wafer slicing or IR blanks<\/li>\n\n\n\n
- SGI2<\/strong>0<\/a>: Fully CNC-controlled, ideal for curved cuts or angle-sensitive parts<\/li>\n<\/ul>\n\n\n\n
Both models support 0.3 mm wire, low-speed slicing, and water-based coolant systems. And both are backed by real test data from actual Ge clients.<\/p>\n\n\n\n
When you\u2019re dealing with a material as unforgiving\u2014and as expensive\u2014as germanium, you can\u2019t afford to guess. Blade sawing may have been the old standard, but diamond wire is the future.<\/p>\n\n\n\n
Less stress. More yield. Better surface finish.<\/p>\n\n\n\n
If you\u2019re working with Ge and want to stop gambling with your output, it\u2019s time to switch. Contact Vimfun and let\u2019s get your cutting process dialed in.<\/p>\n\n\n\n
<\/p>","protected":false},"excerpt":{"rendered":"
If you\u2019ve ever worked with germanium, you already know\u2014it\u2019s a tricky material. Dense, brittle, and not very forgiving under stress. Whether you’re producing IR optics, wafers, or custom lenses, how you cut Ge makes or breaks the result. That\u2019s why diamond wire cutting has become the preferred method for processing germanium. Not just because it\u2019s […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[392],"tags":[412,410,414,411,413],"class_list":["post-4360","post","type-post","status-publish","format-standard","hentry","category-technical-articles","tag-best-way-to-cut-infrared-crystal","tag-diamond-wire-cutting-for-germanium","tag-diamond-wire-vs-blade-cutting","tag-ge-slicing-method","tag-germanium-wafer-production"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/posts\/4360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/comments?post=4360"}],"version-history":[{"count":0,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/posts\/4360\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/media?parent=4360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/categories?post=4360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.opticalcutting.com\/vi\/wp-json\/wp\/v2\/tags?post=4360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- SGI2<\/strong>0<\/a>: Fully CNC-controlled, ideal for curved cuts or angle-sensitive parts<\/li>\n<\/ul>\n\n\n\n
- No thermal damage<\/strong> = better optical properties preserved<\/li>\n\n\n\n
- Thin kerf (as small as 0.35 mm)<\/strong> = more parts per crystal<\/li>\n\n\n\n
- Thermal sensitivity<\/strong> causes stress if it gets too warm<\/li>\n\n\n\n