{"id":2563,"date":"2026-06-17T16:43:46","date_gmt":"2026-06-17T08:43:46","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=2563"},"modified":"2026-07-01T09:32:09","modified_gmt":"2026-07-01T01:32:09","slug":"texture-edm-finish","status":"publish","type":"process","link":"https:\/\/www.jcinjectionmolding.com\/es\/service\/texture-edm-finish\/","title":{"rendered":"Texture & EDM Finish"},"content":{"rendered":"
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Mold-Tech & VDI 3400 Texture Standards<\/h2>\n

Creating a uniform textured or eroded matte surface is highly valued for masking cosmetic defects and providing scratch protection. We support all major industry standards:<\/p>\n\n\n\n\n\n\n\n
Texture Standard<\/th>\nMethod \/ Processing Media<\/th>\nRoughness (Ra \/ Rz)<\/th>\nIdeal Applications<\/th>\n<\/tr>\n<\/thead>\n
Mold-Tech (MT) Chemical Etching<\/td>\nAcid Etching \/ Chemical Masking (e.g., MT-11010)<\/td>\nVaries (0.40 – 12.0 \u00b5m)<\/td>\nAutomotive door interior panels, instrument dashboards, heavy duty power tool handles.<\/td>\n<\/tr>\n
Laser Texturing<\/td>\nDirect 5-Axis Laser Ablation<\/td>\nHighly Customizable (under 0.1 \u00b5m steps)<\/td>\nLuxury cosmetic jars, geometric patterned electronic cases, complex 3D non-slip grips.<\/td>\n<\/tr>\n
VDI 3400 (EDM Spark Finish)<\/td>\nElectrical Discharge Machining (VDI 12 – 45)<\/td>\nRa 0.40 – 18.0 \u00b5m (VDI 12 – 45)<\/td>\nDeep mold cavities, structural inner brackets, cost-effective matte packaging.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Draft Angle Guidelines & Aesthetic Impact of Textures<\/h2>\n

Textured surfaces contract tightly onto mold cores. Increasing draft angles proportionally to the texture depth is mandatory to prevent drag marks:<\/p>\n\n\n\n\n\n\n\n
Texture Depth (Typical)<\/th>\nRecommended Draft Angle (Minimum)<\/th>\nCompatible Standard (Example)<\/th>\n<\/tr>\n<\/thead>\n
Light Texture (< 0.013mm)<\/td>\n1.0\u00b0 to 1.5\u00b0<\/td>\nVDI 18\u201324 \/ MT-11005 (Fine Matte)<\/td>\n<\/tr>\n
Medium Texture (0.025mm)<\/td>\n3.0\u00b0 to 4.0\u00b0 (approx 1.5\u00b0 per 0.01mm)<\/td>\nVDI 27\u201333 \/ MT-11010 (Standard Grain)<\/td>\n<\/tr>\n
Heavy Leather \/ Geometry (> 0.075mm)<\/td>\n6.0\u00b0 to 8.0\u00b0<\/td>\nVDI 36\u201345 \/ MT-11020 (Heavy Leather)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Molding Analysis: Texture Integration & Dynamic Draft Blueprint<\/h2>\n

Creating a uniform textured or spark-eroded EDM surface requires meticulous tooling considerations during the DFM phase:<\/p>\n

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Proportional Draft Angle Calculations<\/p>\n

A standard rule of thumb for textured mold cavities is to design 1.5\u00b0 of draft on all ribs and vertical walls per 0.025mm (0.001 inch) of texture depth. Insufficient draft will cause the highly elastic or rigid polymer to rub against the grain during ejection, resulting in severe drag marks and aesthetic destruction.<\/p>\n<\/div>\n

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Uniform EDM Spark Profiling (VDI 3400)<\/p>\n

When using EDM (spark erosion) to achieve direct VDI finishes inside deep cavity walls, maintaining a uniform spark gap is critical. Jucheng\u2019s tooling division utilizes high-grade copper or graphite electrodes with optimized electrical parameters. This prevents uneven spark pitting, providing a highly uniform, low-gloss matte finish.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

Mold-Tech & VDI 3400 Texture Standards Creating a uniform textured or eroded matte surface is highly valued for masking cosmetic defects and providing scratch protection. We support all major industry standards: Texture Standard Method \/ Processing Media Roughness (Ra \/ Rz) Ideal Applications Mold-Tech (MT) Chemical Etching Acid Etching \/ Chemical Masking (e.g., MT-11010) Varies […]<\/p>\n","protected":false},"featured_media":2586,"template":"","process_category":[25],"class_list":["post-2563","process","type-process","status-publish","has-post-thumbnail","hentry","process_category-surface-finishes"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/es\/wp-json\/wp\/v2\/process\/2563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/es\/wp-json\/wp\/v2\/process"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/es\/wp-json\/wp\/v2\/types\/process"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/es\/wp-json\/wp\/v2\/media\/2586"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/es\/wp-json\/wp\/v2\/media?parent=2563"}],"wp:term":[{"taxonomy":"process_category","embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/es\/wp-json\/wp\/v2\/process_category?post=2563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}