✓ Premium Materials – Baja tahan karat, aluminum, brass, titanium available

✓ High Precision – Tolerance up to ±0.01mm with advanced 5-axis CNC machines

✓ Versatile Applications – Suitable for automotive, aerospace, medical, industrial equipment

✓ Custom Solutions – Tailored dimensions, finishes, and materials to match your exact needs

✓ Fast Turnaround – Prototype in 3-5 hari, mass production in 7- 25hari

✓ Quality Guaranteed – ISO 9001 certified, 100% inspection before shipment

ONTOP is a precision CNC machining company specializing in 3-axis, 4-axis, and 5-axis machining parts ,also including turning and milling services. From prototypes to production, across a wide range of metals and plastics, we deliver high-quality machined parts with tight tolerances and flexible volumes.

· Automotive: Engine parts, transmission components, brake calipers, custom racing components and etc.
· Aerospace: Engine blades, turbine discs, structural components.
· Medical: Orthopedic implants (joints, spinal screws), surgical instruments, dental parts and etc.
· Electronic & Semikonduktor: Smartphone frames, laptop casings, wearable device structures, phone holder, heat sink and etc.
· Industrial Equipment & Otomatisasi: Hydraulic valve bodies, pump housings, robotic arm joints, robotic finger and etc.
· Energy: wind power gearbox parts, battery enclosures, pipeline fittings and etc.
· Mold Manufacturing: Injection mold cores, die-cast molds, stamping fixtures and etc.

To get our quote please provide the following information to us via email or through our wesite online inquiry form:
3D/2D (3D is better for getting more accurate price)、Bahan、Kuantitas、Surface finish requirements、Any special tolerances

Once we have the required info, you’ll get an interactive quote within hours. If there are problem areas in the submitted design, our quoting engineers provides detailed information on the potential manufacturing issues and suggests possible solutions.

Ya, we fully support customized projects. As a professional CNC machining parts manufacturer, we specialize in producing high-precision components based on customer designs.

We support:

· File formats: STEP, IGES, SolidWorks, AutoCAD DWG/DXF, or PDF drawings
· Materials: [eg. aluminum 6061/7075, stainless steel 303/304/316L, brass, copper, titanium, engineering plastics like POM, ABS, PEEK]· Machining tolerance: [eg. ±0.01mm] depending on part complexity
· Part size range: [eg. from 0.5mm to 800mm]· Surface finishes: [eg. anodizing, plating, lapisan bubuk, sandblasting, polishing, passivation]· Order quantity: Prototyping, small batch, and mass production all welcome

Simply send us your design files or samples, and we will provide a tailored manufacturing solution to meet your specific requirements.

Absolutely. ONTOP is specialize in low-volume and prototype machining with no minimum order requirements.

Whether you need a single piece for functional testing or design validation, we treat every order with the same level of precision and quality control as mass production. Our CNC machining centers are optimized for quick setups, allowing us to efficiently handle one-piece orders without compromising accuracy or lead time.

Ya, ONTOP accepts customer-supplied materials as long as they fit our machine specifications.

Our precision components are manufactured from a broad range of materials to meet diverse application requirements across industries such as aerospace, otomotif, medical, and electronics. Typical materials include:

Metals

· Aluminum: 6061, 6063, 7075, 5052, dll.. — suitable for anodizing, sandblasting, polishing
· Stainless Steel: 303, 304, 316, 17-4 PH, dll.. — supports passivation, plating, polishing, laser engraving
· Steel: 45# baja, Q235, tool steel, mold steel, alloy steel — supports heat treating, plating, lapisan
· Copper & Brass: Brass, copper, beryllium copper — supports polishing, plating (nickel, chrome)
· Titanium: Grade 2, Grade 5 — supports anodizing, polishing

Engineering Plastics

· PEEK, PTFE, POM (Delrin), ABS, PC, Nilon, Acrylic, dll.. — supports deburring, polishing, laser engraving

ONTOP offers a variety of finishing options to ensure your parts are ready for assembly upon delivery, termasuk:

· Anodizing (Clear, Hitam, Hard Coat)
· Plating (Nickel, Zinc, Chrome)
· Powder Coating & Painting
· Polishing & Deburring
· Heat Treating
· Laser Marking (Logos, serial numbers, barcodes and etc.)

· Prototypes: Typically 3 ke 7 working days.
· Production Orders: Typically 2 ke 4 weeks, depending on order quantity and material availability.
· We offer expedited services for urgent projects. Contact our sales team to check availability for rush orders.

ONTOP offers high-precision CNC machining with tolerances tailored to your part requirements and material selection. Tolerances vary depending on part size, geometry, material, and manufacturing process—there is no one-size-fits-all standard. General tolerance for metal is +/- 0.01mm to ±0.025mm

Once your order is confirmed, we will review your design and provide a design for manufacturing review, pointing out any areas where we may not be able to achieve your desired tolerances. It’s helpful if you can specify which areas in your design have critical tolerances that must be met and which can be slightly modified if needed to reduce time and costs involved.

Our quality control team uses coordinate measuring machines (CMM) and precision inspection tools to verify every critical dimension. For your specific tolerance requirements, simply note them on your drawing or CAD file, and we will confirm feasibility before production.

Absolutely. We take intellectual property protection very seriously. We are happy to sign a Non-Disclosure Agreement (NDA) before any project details are shared. We also have a strict policy within our factory that no photographs are ever allowed of a customer’s product without express permission.

Our products are manufactured in strict accordance with the ISO 9001 quality management system, and can meet international environmental standards such as RoHS and REACH, as well as special application specifications in industries like automotive and medical.