{"id":904,"date":"2026-03-17T15:55:27","date_gmt":"2026-03-17T07:55:27","guid":{"rendered":"https:\/\/www.jccncmachining.com\/?post_type=material_model&p=904"},"modified":"2026-03-17T15:55:27","modified_gmt":"2026-03-17T07:55:27","slug":"cast-acrylic","status":"publish","type":"material_model","link":"https:\/\/www.jccncmachining.com\/ja\/materials\/pmma-acrylic\/cast-acrylic\/","title":{"rendered":"Cast Acrylic"},"content":{"rendered":"

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Acrylic (PMMA) Material Variants<\/h3>\n\n\n\n\n\n\n\n
Grade<\/th>\nCommon Name<\/th>\nKey Characteristics<\/th>\nTypical Applications<\/th>\n<\/tr>\n<\/thead>\n
Cast Acrylic<\/strong><\/td>\nPlexiglass \/ PMMA<\/td>\nHighest molecular weight. Superior optical clarity and thermal stability. Best for CNC machining without melting.<\/td>\nLenses, light pipes, medical manifolds, premium display cases.<\/td>\n<\/tr>\n
Extruded Acrylic<\/strong><\/td>\nStandard Acrylic<\/td>\nMore consistent thickness but lower melting point. Prone to “gumming” during machining and higher internal stress.<\/td>\nSignage, simple windows, lighting fixtures.<\/td>\n<\/tr>\n
Impact Modified PMMA<\/strong><\/td>\nHigh-Impact Acrylic<\/td>\nBlended with elastomers to increase toughness, though light transmission is slightly reduced.<\/td>\nProtective shields, machine covers, outdoor signage.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Cast Acrylic Machining Capabilities<\/h3>\n\n\n\n\n\n\n\n\n
Capability<\/th>\nTechnical Description<\/th>\nJucheng Advantage<\/th>\n<\/tr>\n<\/thead>\n
Diamond Edge Polishing<\/strong><\/td>\nUsing single-crystal diamond tools on ultra-precision spindles to cut edges to a mirror finish directly.<\/td>\nEliminates the need for labor-intensive hand buffing on flat edges, ensuring perfectly clear “glass-like” edges for high-end displays.<\/td>\n<\/tr>\n
Optical Vapor Polishing<\/strong><\/td>\nExposing machined Acrylic parts to specialized chemical vapors that melt the surface microscopic layer.<\/td>\nWe achieve 100% transparency on complex internal fluid channels and concave surfaces where mechanical tools cannot reach.<\/td>\n<\/tr>\n
Multi-Step Annealing<\/strong><\/td>\nPerforming thermal stress-relief cycles both before and after heavy CNC material removal.<\/td>\nJucheng guarantees that your Acrylic components won’t “craze” (micro-crack) over time, especially when exposed to cleaning fluids or UV light.<\/td>\n<\/tr>\n
Precision Light Guide Milling<\/strong><\/td>\nMilling intricate prism and lens patterns with extremely fine step-overs (down to 0.05mm).<\/td>\nOur 5-axis machines ensure absolute geometric accuracy for light pipes, maximizing light efficiency for automotive and electronic displays.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Fabrication Guidelines for Cast Acrylic<\/h3>\n

Coolant Compatibility:<\/strong>
\nAcrylic is highly sensitive to chemical attack. Standard petroleum coolants cause immediate cracking. Tip:<\/strong> We use exclusively water-soluble, plastic-safe coolants or chilled air-blast to maintain absolute clarity.<\/p>\n

Sharp Tooling Requirement:<\/strong>
\nAcrylic is brittle. Dull tools cause chipping at the exit edges. Tip:<\/strong> We use ultra-sharp, high-rake uncoated carbide tools with polished flutes to shear the material cleanly and minimize friction-induced heat.<\/p>\n

Workholding Sensitivity:<\/strong>
\nThe material is hard but can crack under excessive clamp pressure. Tip:<\/strong> We utilize vacuum tables for large flat sheets and custom-machined soft jaws for blocks to distribute clamping force evenly.<\/p>\n

Heat Control:<\/strong>
\nExcessive heat during machining can cause the surface to “gum” or cloud. Tip:<\/strong> We utilize high-speed spindles with optimized feed rates to ensure chips carry the heat away, leaving a pristine surface.<\/p>\n<\/div>\n

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Primary Applications<\/h3>\n

Medical & Diagnostics<\/strong>
\nMicrofluidic manifolds, incubator components, and flow cells where visual monitoring of fluids is mandatory.<\/p>\n

Lighting & Optics<\/strong>
\nCustom lenses, light pipes, and diffusers for automotive dashboards and high-end consumer electronics.<\/p>\n

Consumer Luxury Goods<\/strong>
\nCosmetic packaging, museum-quality display cases, and award trophies that require a glass-like aesthetic with intricate shapes.<\/p>\n

Scientific Equipment<\/strong>
\nSight glasses for pressure vessels and research manifolds requiring high light transmission and material purity.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Acrylic (PMMA) Material Variants Grade Common Name Key Characteristics Typical Applications Cast Acrylic Plexiglass \/ PMMA Highest molecular weight. Superior optical clarity and thermal stability. Best for CNC machining without melting. Lenses, light pipes, medical manifolds, premium display cases. Extruded Acrylic Standard Acrylic More consistent thickness but lower melting point. Prone to “gumming” during machining and higher internal stress. Signage, simple windows, lighting fixtures. Impact Modified PMMA High-Impact Acrylic Blended with elastomers to increase toughness, though light transmission is slightly reduced. Protective shields, machine covers, outdoor signage. Cast Acrylic Machining Capabilities Capability Technical Description Jucheng Advantage Diamond Edge Polishing Using single-crystal diamond tools on ultra-precision spindles to cut edges to […]<\/p>\n","protected":false},"featured_media":905,"template":"","meta":[],"class_list":["post-904","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/material_model\/904","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/media\/905"}],"wp:attachment":[{"href":"https:\/\/www.jccncmachining.com\/ja\/wp-json\/wp\/v2\/media?parent=904"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}