Explore our high-performance OEM custom-machined, molded, and cast precision components manufactured under rigorous ISO-certified quality control protocols.
In modern precision manufacturing, miniaturization is no longer just a trend—it is a critical imperative across medical devices, micro-optics, semiconductor handling, and aerospace components. OEM Micro Molding represents the apex of polymer micro-fabrication, dealing with part weights measured in milligrams and tolerances governed by sub-micron scales.
Information Gain Insight: Unlike standard injection molding scaled down, genuine micro molding demands specialized micro-injection units (utilizing separate dosing and injection screws or micro-plungers down to 3mm to 6mm diameter), sub-micron CNC/EDM tooling, real-time cavity pressure sensing, and cleanroom handling to prevent particulate contamination from altering part geometry.
Shot Weight Granularity
Capable of metering shot weights as low as 0.001 grams (1 milligram) with ultra-precise runnerless or ultra-low-volume micro-runner delivery systems, avoiding shear heating degradation of high-grade engineering polymers.
Dimensional Tolerance Control
Consistently holding critical internal/external dimensions within ±0.001 mm (1 micron). Crucial for micro-gears, fiber-optic ferrules, and implantable surgical components where zero-backlash assembly is mandatory.
Micro-Feature Definition
Precision replication of micro-wall thicknesses down to 0.05 mm (50 microns), sharp radius features (< 10 µm), and surface textures designed for micro-fluidic channels or optical anti-reflective structures.
| Performance Parameter | Standard Injection Molding | Precision OEM Micro Molding | Engineering Impact & Benefit |
|---|---|---|---|
| Typical Shot Weight | 1.0g to > 5,000g | 0.001g (1mg) to 0.5g | Prevents resin thermal degradation and material waste on expensive medical-grade polymers. |
| Screw / Plunger Diameter | 18mm to 120mm+ | 3mm to 14mm Micro-Plunger | Eliminates residence time issues, guaranteeing First-In, First-Out (FIFO) melt behavior. |
| Max Dimensional Tolerance | ±0.05mm to ±0.10mm | ±0.001mm to ±0.005mm | Allows direct press-fit assembly into micro-electro-mechanical systems (MEMS) without secondary machining. |
| Min Wall Thickness | 0.8mm to 3.0mm | 0.04mm to 0.15mm | Enables lightweighting and ultra-compact packaging for next-gen wearables and surgical tools. |
| Tooling Machining Specs | Standard CNC / EDM | Femtosecond Laser / Micro-EDM | Sub-micron tool surface finishes (Ra < 0.02 µm) directly replicated onto polymer surfaces. |
Our micro molding and precision custom machining solutions serve highly regulated, high-reliability sectors globally. Below is how our capabilities solve critical engineering challenges across tier-1 industries.
Medical & Surgical Devices
Micro-catheter tips, bio-absorbable surgical staples, micro-fluidic diagnostic chips, and implantable drug delivery valves molded in implantable PEEK, PLGA, and medical-grade silicones under cleanroom protocols.
Optoelectronics & Micro-Optics
Precision optical lenses, light guide arrays, micro-prism arrays, and fiber-optic alignment ferrules molded in high-transparency PC, PMMA, and OKP resins with optical surface finishes (Ra < 0.01 µm).
Automotive & ADAS Sensors
High-density micro-connectors, automotive radar housings, LiDAR lens assemblies, and micro-actuator gears molded in temperature-resistant PBT, LCP, and PA66 filled with glass/carbon fibers for maximum structural rigidity.
Semiconductor & Microelectronics
Ultra-thin chip carriers, micro-test sockets, high-precision IC tray packaging, and ESD-safe micro-handling arms designed to protect sensitive silicon wafers during automated SMT pick-and-place assembly.
Micro-Fluidics & Bio-MEMS
Lab-on-a-chip cartridges containing micro-channels as narrow as 20 microns, capillary flow regulators, and bio-compatible diagnostic cassette manifolds for point-of-care medical testing devices.
Aerospace & Micro-Robotics
Ultra-lightweight micro-planetary gearboxes, miniature encoder housings, UAV control-surface linkages, and robotic gripper tips requiring extreme strength-to-weight ratios and zero operational failure tolerances.
As OEM requirements push past sub-micron barriers, Sunmy Hardware is continuously advancing our toolmaking, process monitoring, and material capabilities. Below is our engineering roadmap driving next-generation micro manufacturing.
Combining hard engineering plastics (PEEK, LCP) with liquid silicone rubber (LSR) or conductive polymer paths in a single multi-shot micro-mold. Enables integrated sealing, dampening, and electrical routing in micro-components without manual assembly.
Replacing conventional micro-EDM with ultra-short pulse femtosecond lasers to etch micro-fluidic channels, hydrophobic surface structures, and diffractive optical elements directly onto hardened mold steel with zero thermal stress or micro-cracking.
Mastering extreme melt processing temperatures (>400°C) and hot-runner micro-nozzle controls required for medical-grade PEEK implants and high-frequency 5G/6G RF dielectric housings requiring high heat deflection.
Integrating piezoelectric quartz sensors inside sub-millimeter cavity walls to monitor melt pressure profiles in real-time. Machine control algorithms automatically adjust holding pressure and injection speed per shot to guarantee 100% volumetric filling without flash.
Based in Shenzhen, the global heartland of electronics and precision manufacturing, Sunmy Hardware leverages direct control over every step of the tooling and molding cycle to offer unmatched lead times and cost advantages.
In-House Micro-Tooling (EDM & CNC)
By operating high-precision Swiss 5-axis CNC machining centers and high-speed Wire EDM, we cut micro-mold inserts in-house. This eliminates sub-contractor delays and guarantees sub-micron alignment of mold cores and cavities.
100% Automated AOI Optical Sorting
At micro scales, manual human inspection is impossible. We utilize high-speed Automated Optical Inspection (AOI) with telecentric lens arrays to measure 100% of micro parts for flash, short shots, and micro-cracks before vacuum packaging.
Optimized Total Cost of Ownership (TCO)
Factory-direct pricing in Shenzhen provides 30% to 50% tooling cost savings compared to Western tooling shops, combined with mold longevity guarantees exceeding 1,000,000 shots via hardened S136 and NAK80 tool steels.
Sourcing high-precision custom OEM micro-molded parts internationally requires complete alignment on engineering parameters, validation protocols, and intellectual property safety. Here is how Sunmy Hardware streamlines project execution for procurement leads.
1. Comprehensive DFM & Moldflow Simulation
Before steel is cut, our engineering team executes detailed Moldflow® simulations to analyze gate location shear heating, volumetric shrinkage, orientation warp, and venting locations for micro-cavities.
2. Strict Non-Disclosure & IP Security
We execute legally binding Non-Disclosure Agreements (NDAs) prior to receiving 3D CAD files (STEP, IGES). Your proprietary designs are processed on isolated internal networks to protect sensitive IP.
3. Full Material Traceability & RoHS/REACH
All resins (PEEK, LCP, PC, POM, PBT, Stainless Steel, Aluminum) are sourced with original mill certificates, FDA compliance letters, RoHS, and REACH verification documents attached to every shipment.
Precision quality assurance is the bedrock of micro manufacturing. Our Quality Control lab utilizes non-contact measurement tools designed for micro geometries where physical CMM touch probes would distort delicate walls.
Non-Contact 3D Optical Profilometry
Utilizing white-light interferometry and laser confocal scanning microscopy to map 3D surface topography, measuring step heights and sub-micron feature dimensions with 0.1 µm resolution.
Micro-CMM & Micro-CT X-Ray Scans
For complex internal channels or overmolded metal inserts, micro-CT scanning provides non-destructive internal inspection, validating zero internal voids, porosity, or insert displacement.
First Article Inspection (FAI) & CPK Tracking
Every batch approval includes comprehensive FAI documentation, full dimensional reports, material batch trace cards, and statistical process capability (CPK > 1.67) verification.
Discover our expanded portfolio of custom plastic injection molded components, precision turned metal parts, die-cast enclosures, and micro tubing solutions.
Clear, engineering-backed answers to essential questions regarding minimum part weights, tooling lifespans, materials, and international delivery.