{"id":13411,"date":"2026-06-15T05:04:31","date_gmt":"2026-06-15T05:04:31","guid":{"rendered":"https:\/\/hlh-js.com\/?p=13411"},"modified":"2026-06-15T05:04:31","modified_gmt":"2026-06-15T05:04:31","slug":"silicon-carbide-blasting-media-for-glass-etching-grit-selection-technique","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/zh\/resource\/blog\/silicon-carbide-blasting-media-for-glass-etching-grit-selection-technique\/","title":{"rendered":"Silicon Carbide Blasting Media for Glass Etching:\u00a0Grit Selection &amp; Technique"},"content":{"rendered":"<style>\/* \u2500\u2500 HLH Cluster Shared CSS \u2500\u2500 *\/\n.hlh-cluster *,.hlh-cluster *::before,.hlh-cluster *::after{box-sizing:border-box;margin:0;padding:0}\n.hlh-cluster{\n  --c-bg:#0d1117;--c-surface:#161b22;--c-panel:#1c2330;--c-border:#2a3444;\n  --c-accent:#e8700a;--c-accent2:#f0920d;--c-steel:#8fa3bc;--c-text:#d4dbe5;\n  --c-heading:#eef2f7;--c-muted:#5a6a7e;--c-tag-bg:#1f2d3d;--c-tag-text:#7eb8e8;\n  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Checklist *\/\n.hlh-checklist{list-style:none;margin:14px 0}\n.hlh-checklist li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--c-border);font-size:14.5px;color:var(--c-steel);line-height:1.55}\n.hlh-checklist li:last-child{border-bottom:none}\n.hlh-checklist li::before{content:'\u2713';color:#4caf74;flex-shrink:0;font-weight:700;margin-top:1px}\n.hlh-warn-list{list-style:none;margin:14px 0}\n.hlh-warn-list li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--c-border);font-size:14.5px;color:var(--c-steel);line-height:1.55}\n.hlh-warn-list li:last-child{border-bottom:none}\n.hlh-warn-list li::before{content:'\u2717';color:#f07080;flex-shrink:0;font-weight:700;margin-top:1px}\n\/* Responsive *\/\n@media(max-width:900px){.hlh-layout{grid-template-columns:1fr;padding:0 4%}.hlh-toc-wrap{position:static;padding:20px 0 0}.hlh-article{padding:20px 0}.hlh-vs-wrap{grid-template-columns:1fr}.hlh-vs-divider{display:none}}\n@media(max-width:600px){.hlh-hero{padding:44px 5% 36px}.hlh-related-grid{grid-template-columns:1fr}.hlh-cta-section{padding:32px 20px}}\n<\/style>\n<div class=\"hlh-cluster\">\n<div class=\"hlh-hero\">\n  <div class=\"hlh-hero-eyebrow\">Application Guide \u00b7 Jiangsu Henglihong Technology Co., Ltd.<\/div>\n  <h1>Silicon Carbide Blasting Media for Glass Etching: <em>Grit Selection &amp; Technique<\/em><\/h1>\n  <p class=\"hlh-hero-sub\">A complete practical guide to glass etching with SiC abrasives \u2014 choosing the right grit, setting pressure and standoff, masking techniques, deep carving vs. frosted etch, and common troubleshooting issues.<\/p>\n  <div class=\"hlh-hero-meta\">\n    <div class=\"hlh-meta-item\">\ud83d\udcc5 <span>Updated June 2026<\/span><\/div>\n    <div class=\"hlh-meta-dot\"><\/div>\n    <div class=\"hlh-meta-item\">\u23f1\ufe0f <span>~10 min read<\/span><\/div>\n    <div class=\"hlh-meta-dot\"><\/div>\n    <div class=\"hlh-meta-item\">\ud83c\udfed <span>Henglihong Technical Team<\/span><\/div>\n  <\/div>\n<\/div>\n<div class=\"hlh-layout\">\n<aside class=\"hlh-toc-wrap\">\n  <nav class=\"hlh-toc\" aria-label=\"Table of Contents\">\n    <div class=\"hlh-toc-title\">Contents<\/div>\n    <ol>\n      <li><a href=\"#why-sic\">Why SiC for Glass Etching?<\/a><\/li>\n      <li><a href=\"#glass-types\">Glass Types &amp; Compatibility<\/a><\/li>\n      <li><a href=\"#grit-selection\">Grit Selection Guide<\/a><\/li>\n      <li><a href=\"#process-params\">Process Parameters<\/a><\/li>\n      <li><a href=\"#masking\">Masking &amp; Stencil Methods<\/a><\/li>\n      <li><a href=\"#frosted\">Frosted Etch Technique<\/a><\/li>\n      <li><a href=\"#deep-carving\">Deep Carving Technique<\/a><\/li>\n      <li><a href=\"#troubleshooting\">Troubleshooting<\/a><\/li>\n      <li><a href=\"#faq\">FAQ<\/a><\/li>\n      <li><a href=\"#related\">Related Guides<\/a><\/li>\n    <\/ol>\n    <a class=\"hlh-toc-cta\" href=\"https:\/\/hlh-js.com\/contact\/\" target=\"_blank\" rel=\"noopener\">Request a Quote \u2192<\/a>\n  <\/nav>\n<\/aside>\n<article class=\"hlh-article\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"why-sic\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 01<\/span>Why Silicon Carbide for Glass Etching?<\/h2>\n  <p>Glass etching using abrasive blasting works by propelling hard, angular particles at the glass surface at high velocity, creating micro-fractures in the surface layer that scatter light \u2014 producing the characteristic frosted or matte appearance. The quality of the etch \u2014 its uniformity, depth, edge definition, and texture \u2014 depends critically on the abrasive media chosen.<\/p>\n  <p>Silicon carbide is the preferred abrasive for glass etching for three specific reasons. First, its Mohs 9.5 hardness is substantially greater than glass (Mohs 5.5\u20137.0 depending on type), ensuring efficient material removal without excessive pressure required. Second, its sharp angular particle morphology creates cleaner, more defined micro-fractures with crisper edge transitions than rounded media like glass bead. Third, its chemical inertness means no surface contamination or reaction with the glass chemistry \u2014 critical for optical-quality work.<\/p>\n  <p>For a broader overview of SiC blast media properties: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/silicon-carbide-abrasive-blasting-media-complete-buyers-guide\/\" target=\"_blank\" rel=\"noopener\">Complete Buyer&#8217;s Guide to SiC Abrasive Blasting Media<\/a>.<\/p>\n  <div class=\"hlh-tags\">\n    <span class=\"hlh-tag\">Glass Etching<\/span>\n    <span class=\"hlh-tag\">Sandblast Art<\/span>\n    <span class=\"hlh-tag\">Frosted Glass<\/span>\n    <span class=\"hlh-tag\">Deep Carving<\/span>\n    <span class=\"hlh-tag\">Decorative Glass<\/span>\n  <\/div>\n<\/div>\n\n<hr class=\"hlh-divider\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"glass-types\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 02<\/span>Glass Types and SiC Compatibility<\/h2>\n  <div class=\"hlh-table-wrap\">\n    <table class=\"hlh-table\">\n      <thead><tr><th>Glass Type<\/th><th>\u83ab\u6c0f\u786c\u5ea6<\/th><th>SiC Compatibility<\/th><th>Notes<\/th><\/tr><\/thead>\n      <tbody>\n        <tr><td><strong>Soda-lime glass<\/strong> (windows, bottles)<\/td><td>5.5\u20136.0<\/td><td><span class=\"hlh-badge hlh-badge-green\">Excellent<\/span><\/td><td>Standard etching glass \u2014 responds predictably to all SiC grits<\/td><\/tr>\n        <tr><td><strong>Borosilicate glass<\/strong> (Pyrex, lab ware)<\/td><td>6.5\u20137.0<\/td><td><span class=\"hlh-badge hlh-badge-green\">Very Good<\/span><\/td><td>Harder \u2014 requires slightly coarser grit or higher pressure for equivalent etch depth<\/td><\/tr>\n        <tr><td><strong>Fused silica \/ quartz<\/strong><\/td><td>7.0\u20137.5<\/td><td><span class=\"hlh-badge hlh-badge-green\">Good<\/span><\/td><td>Harder substrate \u2014 use Green SiC for highest precision; slower cutting<\/td><\/tr>\n        <tr><td><strong>Crystal \/ lead glass<\/strong><\/td><td>5.0\u20135.5<\/td><td><span class=\"hlh-badge hlh-badge-green\">Excellent<\/span><\/td><td>Softer \u2014 reduce pressure for fine detail; very responsive to SiC<\/td><\/tr>\n        <tr><td><strong>Tempered \/ safety glass<\/strong><\/td><td>5.5\u20136.5<\/td><td><span class=\"hlh-badge hlh-badge-orange\">Use caution<\/span><\/td><td>Pre-stressed \u2014 concentrated impact can cause spontaneous fracture. Use diffuse, low-pressure technique only<\/td><\/tr>\n        <tr><td><strong>Laminated \/ insulated glass<\/strong><\/td><td>N\/A<\/td><td><span class=\"hlh-badge hlh-badge-red\">Not recommended<\/span><\/td><td>Etching only outer lite; inner PVB interlayer cannot be blasted<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n  <div class=\"hlh-note\">\n    <span class=\"hlh-note-icon\">\u26a0\ufe0f<\/span>\n    <p><strong>Tempered glass warning:<\/strong> Tempered (toughened) safety glass contains internal stress from the thermal tempering process. Concentrated abrasive impact at a single point can initiate spontaneous fracture of the entire panel \u2014 a safety hazard. If etching tempered glass is required, use only very fine grit (#180\u2013240), low pressure (25\u201340 PSI), large nozzle-to-glass distance (400+ mm), and keep the nozzle constantly moving. Never dwell on a single point. Consider chemical etching cream as a safer alternative for tempered glass.<\/p>\n  <\/div>\n<\/div>\n\n<hr class=\"hlh-divider\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"grit-selection\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 03<\/span>Grit Selection for Glass Etching<\/h2>\n  <p>Grit size is the primary determinant of etch texture, depth, and edge definition. Selecting the correct grit for the application is the single most important setup decision.<\/p>\n  <div class=\"hlh-table-wrap\">\n    <table class=\"hlh-table\">\n      <thead><tr><th>Grit Range<\/th><th>Etch Type<\/th><th>Texture<\/th><th>Best Application<\/th><th>Typical Pressure<\/th><\/tr><\/thead>\n      <tbody>\n        <tr><td><strong>#60\u201380<\/strong><\/td><td>Bold \/ deep<\/td><td>Coarse, highly visible<\/td><td>Exterior signage, architectural panels, bold decorative work<\/td><td>60\u201390 PSI<\/td><\/tr>\n        <tr><td><strong>#100\u2013120<\/strong><\/td><td>Standard decorative<\/td><td>Medium-coarse, clearly frosted<\/td><td>Residential decorative glass, door panels, shower screens<\/td><td>50\u201380 PSI<\/td><\/tr>\n        <tr><td><strong>#150\u2013180<\/strong><\/td><td>Fine decorative<\/td><td>Fine, soft frost<\/td><td>Fine art glass, portraiture detail work, light frosting<\/td><td>40\u201365 PSI<\/td><\/tr>\n        <tr><td><strong>#220\u2013320<\/strong><\/td><td>Ultra-fine frost<\/td><td>Very fine, near-translucent<\/td><td>Subtle privacy frosting, optical glass surface conditioning<\/td><td>30\u201350 PSI<\/td><\/tr>\n        <tr><td><strong>#80\u2013120 (stage carve)<\/strong><\/td><td>Deep carving<\/td><td>Coarse on carved areas<\/td><td>3D relief carving, trophy glass, deep sculptural work<\/td><td>70\u2013100 PSI<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n  <div class=\"hlh-highlight\">\n    <p><strong>Quick rule of thumb:<\/strong> For every-day decorative glass etching on standard soda-lime glass (windows, mirrors, picture frames), SiC <strong>#120<\/strong> \u4e8e <strong>50\u201370 PSI<\/strong> is the most versatile starting point. Adjust coarser for more visible texture; finer for softer, more subtle effects.<\/p>\n  <\/div>\n  <p>For the complete grit size reference with FEPA\/ANSI\/JIS cross-reference and Ra values: <a class=\"hlh-link-pill\" href=\"https:\/\/hlh-js.com\/resource\/blog\/silicon-carbide-grit-size-chart-how-to-choose-the-right-mesh-for-blasting\/\" target=\"_blank\" rel=\"noopener\">SiC Grit Size Chart<\/a><\/p>\n<\/div>\n\n<hr class=\"hlh-divider\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"process-params\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 04<\/span>Process Parameters for Glass Etching<\/h2>\n  <div class=\"hlh-table-wrap\">\n    <table class=\"hlh-table\">\n      <thead><tr><th>\u53c2\u6570<\/th><th>Frosted Etch<\/th><th>Deep Carving<\/th><th>Notes<\/th><\/tr><\/thead>\n      <tbody>\n        <tr><td><strong>Air Pressure<\/strong><\/td><td>35\u201365 PSI<\/td><td>70\u2013100 PSI<\/td><td>Start at lower end; increase only as needed<\/td><\/tr>\n        <tr><td><strong>Nozzle Standoff<\/strong><\/td><td>150\u2013300 mm<\/td><td>100\u2013200 mm<\/td><td>Farther = softer impact, broader pattern<\/td><\/tr>\n        <tr><td><strong>Nozzle Angle<\/strong><\/td><td>80\u201390\u00b0 to glass<\/td><td>70\u201390\u00b0 to glass<\/td><td>Perpendicular for maximum cut depth<\/td><\/tr>\n        <tr><td><strong>Nozzle Movement<\/strong><\/td><td>Constant sweeping motion<\/td><td>Controlled dwell + sweeping<\/td><td>Never stop moving \u2014 prevents uneven etch<\/td><\/tr>\n        <tr><td><strong>Nozzle ID<\/strong><\/td><td>6\u20138 mm bore<\/td><td>8\u201310 mm bore<\/td><td>Larger ID = higher volume flow<\/td><\/tr>\n        <tr><td><strong>Grit<\/strong><\/td><td>#120\u2013220<\/td><td>#60\u2013120<\/td><td>See grit table above<\/td><\/tr>\n        <tr><td><strong>Compressor CFM<\/strong><\/td><td>10\u201315 CFM min<\/td><td>15\u201325 CFM min<\/td><td>Undersized compressor causes pressure drops mid-blast<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n  <div class=\"hlh-note\">\n    <span class=\"hlh-note-icon\">\ud83d\udca1<\/span>\n    <p><strong>Air quality:<\/strong> Always use an inline moisture separator and oil-water separator on the air supply. Wet air causes SiC media to clump in the pot, producing inconsistent flow and uneven etch texture. On humid days, run the compressor for 10 minutes to purge moisture from the lines before starting a project.<\/p>\n  <\/div>\n<\/div>\n\n<hr class=\"hlh-divider\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"masking\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 05<\/span>Masking and Stencil Methods<\/h2>\n  <p>The quality of glass etching is determined as much by masking technique as by abrasive selection. The mask protects the areas of the glass that should remain clear while exposing the areas to be etched. Choosing the right mask material for the application is critical \u2014 SiC&#8217;s hardness and sharp edges will rapidly penetrate inadequate masking materials.<\/p>\n  <h3>Mask Materials by Application<\/h3>\n  <div class=\"hlh-steps\">\n    <div class=\"hlh-step\">\n      <div class=\"hlh-step-num\">1<\/div>\n      <div class=\"hlh-step-body\">\n        <h4>Vinyl Blast Mask (60\u2013100 mil \/ 1.5\u20132.5 mm thickness)<\/h4>\n        <p>The industry standard for SiC glass etching. Available in pressure-sensitive adhesive rolls or pre-cut sheets. Cut the design with a vinyl cutter or craft knife, apply firmly to clean glass, and squeegee out all air bubbles before blasting. Minimum 60-mil vinyl for SiC \u2014 thinner vinyl will be cut through by SiC before the glass underneath is fully etched. For deep carving with coarse grit and high pressure, use 100-mil (2.5 mm) blast mask for extended durability.<\/p>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-step\">\n      <div class=\"hlh-step-num\">2<\/div>\n      <div class=\"hlh-step-body\">\n        <h4>Rubber Blast Mask (1.5\u20133 mm thickness)<\/h4>\n        <p>Superior durability to vinyl for high-pressure deep carving. Provides 3\u20135\u00d7 longer service life than vinyl under SiC at 80+ PSI. More expensive and harder to cut detailed designs, but essential for production glass etching where the same stencil will be used for multiple pieces. Photopolymer rubber masks offer the best combination of fine detail resolution and SiC resistance.<\/p>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-step\">\n      <div class=\"hlh-step-num\">3<\/div>\n      <div class=\"hlh-step-body\">\n        <h4>Contact Paper \/ Shelf Liner (light use only)<\/h4>\n        <p>Acceptable for SiC etching at low pressure (#150\u2013220, 30\u201345 PSI) for very short-duration frosted etching. Will not withstand coarse grit or extended blasting time. Not suitable for deep carving or production work. Use only for hobbyist \/ one-time projects where investment in proper blast mask is not justified.<\/p>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-step\">\n      <div class=\"hlh-step-num\">4<\/div>\n      <div class=\"hlh-step-body\">\n        <h4>Photoresist Film (precision work)<\/h4>\n        <p>UV-cured photoresist films (similar to PCB photoresist) can be used for high-resolution, photographic-quality stencil work on glass. Requires UV exposure equipment and development chemistry, but allows photographic image reproduction with fine detail resolution (&lt;0.2 mm line width). Used in the optical industry and high-end decorative glass studios. SiC at fine grit (#180\u2013240) and low-medium pressure (40\u201360 PSI) is compatible with most photoresist film systems.<\/p>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<hr class=\"hlh-divider\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"frosted\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 06<\/span>Frosted Etch Technique<\/h2>\n  <p>Frosted etching creates a uniform, light-scattering surface on the exposed glass areas \u2014 the classic privacy glass or decorative frosted panel look. The objective is even, consistent frosting across the entire etched area with no hot spots (darker, deeper areas from over-blasting) and clean edges at the mask boundary.<\/p>\n  <h3>Step-by-Step Frosted Etch Process<\/h3>\n  <ul class=\"hlh-checklist\">\n    <li>Clean glass surface thoroughly with isopropyl alcohol. Remove all fingerprints, grease, and dust \u2014 any contamination under the mask will cause mask lifting and etch bleed.<\/li>\n    <li>Apply vinyl blast mask (minimum 60 mil) to dry, room-temperature glass. Squeegee firmly, starting from the center and working outward to eliminate all air bubbles.<\/li>\n    <li>Cut design with sharp craft knife or vinyl cutter. Remove the mask from areas to be etched, leaving the surrounding clear areas masked.<\/li>\n    <li>Load SiC #120\u2013150 into blast cabinet or pressure pot. Set air pressure to 45\u201360 PSI and confirm air is dry (no moisture).<\/li>\n    <li>Hold nozzle 200\u2013250 mm from glass at 90\u00b0 angle. Begin sweeping pass across the exposed glass \u2014 keep nozzle moving at all times. Work in overlapping horizontal passes, maintaining consistent speed and distance.<\/li>\n    <li>Check frosting uniformity after first pass. Areas with consistent frosting appear evenly white\/gray. Hot spots (dark areas) indicate the nozzle dwelled too long \u2014 reduce dwell time on subsequent passes.<\/li>\n    <li>Complete 2\u20134 passes until full, even frosting is achieved. Do not over-blast \u2014 once glass is uniformly frosted, additional blasting only deepens the profile without improving uniformity.<\/li>\n    <li>Remove mask carefully. Clean glass with compressed air or soft brush to remove any media residue before inspecting final result.<\/li>\n  <\/ul>\n<\/div>\n\n<hr class=\"hlh-divider\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"deep-carving\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 07<\/span>Deep Carving (Stage Carving) Technique<\/h2>\n  <p>Deep carving creates a three-dimensional sculptural relief in glass by selectively blasting different areas to different depths using a multi-stage masking process. This is the most technically demanding glass etching technique but produces the most visually striking results \u2014 the kind seen in trophy glass, architectural glass panels, and museum-quality decorative work.<\/p>\n  <p>The principle is sequential: design elements intended to appear in the foreground are protected by mask and blasted last (receiving the least depth), while background elements are exposed first and blasted deepest. Multiple mask layers are progressively removed between blasting stages, creating depth differentiation of 0.5\u20135 mm or more depending on glass thickness and number of stages.<\/p>\n  <div class=\"hlh-highlight\">\n    <p><strong>Key parameters for deep carving:<\/strong> SiC #80\u2013100 grit \u00b7 80\u2013100 PSI direct pressure \u00b7 100\u2013150 mm standoff \u00b7 100-mil rubber or heavy vinyl mask \u00b7 Boron carbide nozzle (standard nozzles wear rapidly at these parameters) \u00b7 3\u20137 masking stages for complex multi-depth designs<\/p>\n  <\/div>\n  <div class=\"hlh-note\">\n    <span class=\"hlh-note-icon\">\ud83d\udca1<\/span>\n    <p><strong>Glass thickness guide:<\/strong> Deep carving is practical on glass 6 mm and thicker. For 6\u201310 mm glass, limit carving depth to 1\u20132 mm per stage. For 12 mm+ glass, full sculptural relief to 3\u20135 mm is achievable with 5\u20137 stages. Never carve deeper than 40% of glass thickness \u2014 structural integrity risk increases significantly beyond this point.<\/p>\n  <\/div>\n<\/div>\n\n<hr class=\"hlh-divider\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"troubleshooting\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 08<\/span>Troubleshooting Common Glass Etching Problems<\/h2>\n  <div class=\"hlh-table-wrap\">\n    <table class=\"hlh-table\">\n      <thead><tr><th>Problem<\/th><th>Likely Cause<\/th><th>\u89e3\u51b3\u65b9\u6848<\/th><\/tr><\/thead>\n      <tbody>\n        <tr><td><strong>Uneven frosting \/ hot spots<\/strong><\/td><td>Inconsistent nozzle speed or too-slow sweep<\/td><td>Practice consistent, faster sweeping motion; maintain uniform standoff distance<\/td><\/tr>\n        <tr><td><strong>Etch bleeding under mask edge<\/strong><\/td><td>Mask not adhered firmly; air bubble at edge<\/td><td>Squeegee all edges firmly; use mask application fluid; reduce air pressure<\/td><\/tr>\n        <tr><td><strong>Mask cutting through before etch complete<\/strong><\/td><td>Mask too thin for grit\/pressure used<\/td><td>Upgrade to heavier vinyl (100 mil) or rubber blast mask; reduce pressure<\/td><\/tr>\n        <tr><td><strong>Irregular, patchy etch texture<\/strong><\/td><td>Media clumping from moisture in air supply<\/td><td>Add inline moisture separator; purge lines before starting; check media is dry<\/td><\/tr>\n        <tr><td><strong>Sharp edges chipping at design boundary<\/strong><\/td><td>Nozzle angle too low (grazing angle)<\/td><td>Increase nozzle angle to 85\u201390\u00b0; reduce pressure slightly at boundaries<\/td><\/tr>\n        <tr><td><strong>Etch too shallow after multiple passes<\/strong><\/td><td>Grit too fine or pressure too low<\/td><td>Switch to coarser grit (#80\u2013100); increase pressure; verify grit is not degraded to fines<\/td><\/tr>\n        <tr><td><strong>Glass cracking during etching<\/strong><\/td><td>Tempered glass; thermal shock; excessive pressure<\/td><td>Never etch tempered glass at high pressure; verify glass type before starting<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n<\/div>\n\n<hr class=\"hlh-divider\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"faq\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 09<\/span>FAQ<\/h2>\n  <div style=\"border:1px solid var(--c-border);border-radius:var(--r-md);margin-bottom:10px;overflow:hidden\">\n    <div style=\"background:var(--c-panel);padding:13px 17px;font-size:14px;font-weight:600;color:var(--c-heading)\">What is the best SiC grit for frosting glass for privacy?<\/div>\n    <div style=\"padding:13px 17px;font-size:13.5px;color:var(--c-steel);border-top:1px solid var(--c-border)\">For a smooth, fine privacy frost, #150\u2013180 grit at 40\u201355 PSI produces the most visually pleasing result \u2014 dense, even frosting that scatters light effectively while maintaining a soft appearance. Coarser grits (#80\u2013120) produce a more aggressive, grainy frost that is more visible from a distance but has a rougher surface texture. For shower screens and windows, #150 SiC is the industry-preferred choice among production glass etchers.<\/div>\n  <\/div>\n  <div style=\"border:1px solid var(--c-border);border-radius:var(--r-md);margin-bottom:10px;overflow:hidden\">\n    <div style=\"background:var(--c-panel);padding:13px 17px;font-size:14px;font-weight:600;color:var(--c-heading)\">Can I etch glass with a regular soda blaster or sandblaster?<\/div>\n    <div style=\"padding:13px 17px;font-size:13.5px;color:var(--c-steel);border-top:1px solid var(--c-border)\">Soda blasters use sodium bicarbonate media (Mohs 2.5) \u2014 far too soft to etch glass effectively. Standard sandblasters using silica sand are not recommended due to silicosis risk. A proper glass etching setup requires: a pressure blast system (or quality suction cabinet), silicon carbide media (#80\u2013220 depending on application), boron carbide or tungsten carbide nozzle, appropriate blast mask, and respiratory protection. The equipment investment is manageable; cutting corners on media or nozzle type produces inferior results.<\/div>\n  <\/div>\n  <div style=\"border:1px solid var(--c-border);border-radius:var(--r-md);overflow:hidden\">\n    <div style=\"background:var(--c-panel);padding:13px 17px;font-size:14px;font-weight:600;color:var(--c-heading)\">How long does SiC grit last when etching glass?<\/div>\n    <div style=\"padding:13px 17px;font-size:13.5px;color:var(--c-steel);border-top:1px solid var(--c-border)\">In an enclosed blast cabinet with media recovery, SiC typically lasts 3\u20135 passes through the system before the particle size has degraded enough to reduce etch quality noticeably. Glass etching at lower pressures (&lt;60 PSI) extends media life compared to high-pressure industrial blasting. Top up with 15\u201320% fresh SiC after every 3\u20134 uses. Replace the full charge when frosting uniformity becomes difficult to achieve \u2014 a sign the grit distribution has shifted too far toward fines.<\/div>\n  <\/div>\n<\/div>\n\n<hr class=\"hlh-divider\">\n\n<div class=\"hlh-section\">\n  <span class=\"hlh-section-anchor\" id=\"related\"><\/span>\n  <h2><span class=\"hlh-h2-num\">SECTION 10<\/span>Related Guides<\/h2>\n  <div class=\"hlh-related-grid\">\n    <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/silicon-carbide-abrasive-blasting-media-complete-buyers-guide\/\" target=\"_blank\" rel=\"noopener\">\n      <span class=\"hlh-related-tag\">Pillar<\/span>\n      <div class=\"hlh-related-title\">Complete Buyer&#8217;s Guide to SiC Blasting Media<\/div>\n      <div class=\"hlh-related-desc\">Full SiC overview: all properties, applications, and sourcing in one guide.<\/div>\n      <div class=\"hlh-related-arrow\">Read guide \u2192<\/div>\n    <\/a>\n    <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/silicon-carbide-grit-size-chart-how-to-choose-the-right-mesh-for-blasting\/\" target=\"_blank\" rel=\"noopener\">\n      <span class=\"hlh-related-tag\">Selection<\/span>\n      <div class=\"hlh-related-title\">SiC Grit Size Chart &amp; Selection Guide<\/div>\n      <div class=\"hlh-related-desc\">Complete FEPA\/ANSI\/JIS reference with Ra correlation tables.<\/div>\n      <div class=\"hlh-related-arrow\">Read guide \u2192<\/div>\n    <\/a>\n    <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/silicon-carbide-vs-glass-bead-blasting-aggressive-cut-vs-smooth-finish\/\" target=\"_blank\" rel=\"noopener\">\n      <span class=\"hlh-related-tag\">Comparison<\/span>\n      <div class=\"hlh-related-title\">SiC vs. Glass Bead: Why SiC Wins for Glass Etching<\/div>\n      <div class=\"hlh-related-desc\">Why angular SiC produces sharper, cleaner etch than spherical glass bead.<\/div>\n      <div class=\"hlh-related-arrow\">Read guide \u2192<\/div>\n    <\/a>\n    <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/how-to-buy-silicon-carbide-blasting-media-from-china-moq-specs-supplier-checklist\/\" target=\"_blank\" rel=\"noopener\">\n      <span class=\"hlh-related-tag\">Procurement<\/span>\n      <div class=\"hlh-related-title\">How to Buy SiC from China: MOQ, Specs &amp; Checklist<\/div>\n      <div class=\"hlh-related-desc\">Sourcing guide for procurement teams buying SiC in commercial volumes.<\/div>\n      <div class=\"hlh-related-arrow\">Read guide \u2192<\/div>\n    <\/a>\n  <\/div>\n<\/div>\n\n<div class=\"hlh-cta-section\">\n  <h2>Source Glass Etching SiC Direct from Manufacturer<\/h2>\n  <p>Jiangsu Henglihong Technology Co., Ltd. supplies silicon carbide abrasive in #60 to #400 grit \u2014 ideal for decorative glass etching and deep carving. Black SiC, full FEPA grit range, consistent particle size distribution.<\/p>\n  <a class=\"hlh-cta-btn\" href=\"https:\/\/hlh-js.com\/contact\/\" target=\"_blank\" rel=\"noopener\">Request a Quote \u2192<\/a>\n  <div class=\"hlh-cta-sub\">MOQ from 1 MT \u00b7 25 kg bags available \u00b7 Free sample grains for grit evaluation<\/div>\n<\/div>\n\n<div class=\"hlh-author\">\n  <div class=\"hlh-author-avatar\">\u2699\ufe0f<\/div>\n  <div>\n    <div class=\"hlh-author-name\">Henglihong Technical Content Team<\/div>\n    <div class=\"hlh-author-bio\">Published by Jiangsu Henglihong Technology Co., Ltd. Last updated: June 2026.<\/div>\n  <\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Application Guide \u00b7 Jiangsu Henglihong Technology Co., Ltd. Silicon Carbide  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":13413,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,177,138],"tags":[],"class_list":["post-13411","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-material","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/posts\/13411","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/comments?post=13411"}],"version-history":[{"count":2,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/posts\/13411\/revisions"}],"predecessor-version":[{"id":13414,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/posts\/13411\/revisions\/13414"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/media\/13413"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/media?parent=13411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/categories?post=13411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/tags?post=13411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}