Domaille Engineering

What Domaille Engineering does

Domaille Engineering, LLC is a Rochester, Minnesota-based manufacturer founded in 1990 by Nancy and Mike Domaille. The company operates two integrated business lines: (1) fiber optic equipment manufacturing, and (2) custom precision machining and contract manufacturing. Its fiber optic product portfolio covers the full connector production workflow — polishing machines (flagship APM-HDC-5400 and the new entry-level APM-HDC-2500), curing ovens (CO-6500/6600 and CO-6700/6800), laser cleavers (OptiSaber OS7000S/M/M-TMT, OS7100, OS7500P), inspection microscopes (OptiSpec DE series), and proprietary fixtures (AbraSave® with Unique Path Technology, Single Port, Custom & Legacy). The DE DataLink® platform provides real-time production-line monitoring, barcode scanning, and traceability. Underlying technology centers on ultra-precision polishing, laser cleaving, and optical inspection systems designed for high-volume fiber optic connector production, particularly MT, MPO, and MTP multi-fiber connectors where Domaille claims the highest industry production yields.

Domaille sells exclusively through direct enterprise sales to Fortune 500 OEMs and custom precision manufacturing customers, with no resellers or distributors. Pricing is not publicly disclosed; customers engage through a website inquiry form, dedicated division emails (PrecisionSales, EquipmentService), and assigned program managers. The company is AS9100D, ISO 9001:2015, and ITAR registered, qualifying it for aerospace, defense, and regulated-industry work. End markets span telecommunications and digital infrastructure (primary), aerospace & defense, energy, and industrial manufacturing.

Revenue is generated from four streams: (1) initial hardware sales of fiber optic equipment and precision-machined components, (2) recurring replacement parts and consumables (filters, rubber pads, abrasive films, fixture repair kits), (3) repair, calibration, and recertification services, and (4) custom-engineered components sold under the precision manufacturing division. In late 2025, Domaille was carved out of ADDMAN Engineering and acquired by Palm Peak Capital (Boca Raton, FL) as a platform investment from the sponsor's debut $374M fund, with Stellus Capital Management providing senior secured debt and equity co-investment and D.A. Davidson serving as exclusive financial advisor.

Name

Domaille Engineering

Legal name

Domaille Engineering, LLC

Website

https://domailleengineering.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

101–250 employees

Short description

Domaille Engineering is a Rochester, Minnesota-based manufacturer of precision fiber optic connector production equipment (polishing machines, laser cleavers, microscopes, fixtures) and custom contract-manufactured components, serving Fortune 500 OEMs in telecommunications, aerospace & defense, energy, and industrial markets since 1990.

Ownership category

akta.pro rank

Product category

Fiber Optic Manufacturing Equipment

NAICS

Fiber Optic Cable Manufacturing (335921), Other Communications Equipment Manufacturing (33429), Cutting Tool and Machine Tool Accessory Manufacturing (333515)

SIC

Special Industry Machinery, Nec (3559), Special Industry Machinery (No Metalworking Machinery) (3550)

akta.pro primary industry

Data, Communications & Fiber Optic Cable (IMADAMAD)

Keywords

• Fiber optic polishing equipment
• Precision machined components
• Fiber optic laser cleavers
• MT MPO connector manufacturing
• Aerospace precision manufacturing

Headquarters

HQ city

Rochester

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Others

Revenue model

1. Fiber Optic Polishing Equipment and Accessories: Sale of polishing machines (APM-HDC-5400, APM-HDC-2500, 5400 Automated Suite), curing ovens (CO-6500/6600, CO-6700/6800), laser cleavers (OptiSaber OS7100, OS7000M, OS7000S, OS7000M-TMT, OS7500P), microscopes (OptiSpec DE2503, DE2600, DE3200, DE8850/8880), fixtures (AbraSave, Single Port, Custom & Legacy), and accessories (Air Cleanse, Micro-G, Cable Management, Drip Trays, Gold Series Rubber Pads, EZ-Check Kits, Load Cell Pressure Kits).
2. Replacement Parts and Consumables: Annual replacement of filters, rubber pads, fixture repair kits, and other wear parts for the company's fiber optic equipment. Fixtures include replaceable ferrule inserts. Polishing machine recertification and calibration services recommended annually.
3. Repair, Calibration, and Certification Services: Complete repair and calibration services for all Domaille polishing machines, curing ovens, fixtures, laser cleavers, microscopes, and accessories. Service process includes evaluation, customer authorization, and certificate of accuracy upon completion. Annual recertification recommended.
4. Precision Manufacturing (Custom Machined Components): Custom-engineered precision components with exacting tolerances for aerospace, defense, commercial, energy, and industrial markets. Includes engineering-to-manufacturing (E2M) collaborative approach, program management, and low-volume/high-mix production capabilities.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Domaille Engineering manufactures precision fiber optic cable assembly equipment — including polishing machines, curing ovens, laser cleavers, inspection microscopes, and patented polishing fixtures — and provides custom precision machined components for aerospace, defense, energy, telecom, and industrial markets. The company serves as an OEM supplier to enterprise customers with complete lifecycle support including repair, calibration, and replacement parts.

Product overview

Domaille Engineering is a manufacturer of precision fiber optic equipment and precision machined components, founded in 1990 and headquartered in Rochester, Minnesota. The company offers two core product lines: Fiber Optic Equipment (polishing machines, curing ovens, laser cleavers, microscopes, fixtures, and accessories) and Precision Manufacturing Services. The flagship APM-HDC-5400 polishing machine serves as the primary platform, complemented by the entry-level APM-HDC-2500 and the advanced 5400 Automated Suite for fully automated operations. The OptiSaber laser cleaver series (OS7100, OS7000M, OS7000M-TMT, OS7000S, OS7500P) handles fiber cleaving, while the OptiSpec microscope line (DE2503, DE2600-D1, DE2600/DE2600-S1, DE3200, DE8850/DE8880) enables inspection. The patented AbraSave fixture technology reduces polishing time by 50% and extends film life by 90%. DE DataLink provides smart factory connectivity. The Precision Manufacturing division serves aerospace, defense, energy, telecom, and industrial sectors with CNC machining, EDM, jig grinding, and electro-mechanical assembly. All products are supported by comprehensive repair, calibration, and replacement parts services.

Differentiator

Problem solved

Functional benefit

Brands

• AbraSave®: Patented fixture technology that reduces polishing time by up to 50% and extends abrasive film life by up to 90% using Unique Path Technology.
• OptiSaber®
• OptiSpec®
• DE DataLink®
• Micro-G®

Products and services

• APM-HDC-5400 Polishing Machine Flagship fiber optic polishing machine with rigid fixture systems, AbraSave+ technology, integrated Micro-G controls, bi-directional polishing platen, polishing pressure capability up to 24 lbs, and CE certification. Built for enterprise OEM customers producing high-volume multi-fiber connectors (MT, MPO, MTP).
• APM-HDC-2500 Polishing Machine Entry-level precision fiber optic polishing machine providing essential polishing needs with PC-based system, 4-inch color touchscreen, force programmable up to 20 lbs, 10-200 RPM platen speed with feedback control, and CE certification.
• CO-6500 / CO-6600 Curing Oven Universal curing oven maximizing productivity when curing epoxy on single and multi-fiber connectors. Holds up to 24 MT connectors, maximum temperature of 140C, available in 120V and CE rated 240V models.
• CO-6700 / CO-6800 Curing Oven High-resolution user interface curing oven with temperature hold, timed, twin timed, step, and ramp modes. Compatible with DE DataLink smart factory software for remote monitoring and data integration.
• AbraSave Fixtures Patented polishing fixtures using Unique Path Technology that reduces polishing time by up to 50% while extending abrasive film life by up to 90%. Available for MT, MT Angled, MTRJ, TMT Angle connectors and custom configurations.
• OptiSaber OS7100 Universal Laser Cleaver High-precision universal laser cleaver with chip-free cleaves improving production yield. Features quick change adapter inserts compatible with MT, TMT, SC, LC, LC Duplex, CS, SN, and MDC connectors.
• OptiSaber OS7000M Laser Cleaver Multi-fiber laser cleaver for MT/MPO ferrules featuring recommended protrusion of 100 microns, co-planarity of 10 microns. Reduces process variation and cracking associated with mechanical cleaving.
• OptiSaber OS7000M-TMT Laser Cleaver Laser cleaver for multi-fiber TMT applications that eliminates cracking and chipping associated with mechanical cleaving. Features single and dual row configurations.
• OptiSaber OS7000S Single Fiber Laser Cleaver Single-fiber laser cleaver providing cost savings and reduced process variation. Quick change adapter inserts for SC, LC, SMA, FC, ST connectors, E2000, M29504, and 1.25mm ferrules.
• OptiSaber OS7500P Laser Cleaver Laser cleaving system designed for PRIZM Light Turn and MXC connectors. Cleaves up to four rows of 8, 12, or 16 fiber ribbons in one load. Approved by US Conec.
• OptiSpec Microscopes (DE Series) Full line of high-quality fiber optic inspection microscopes for production and laboratory use. Includes DE2503, DE2600-D1, DE2600/DE2600-S1, DE3200, and DE8850/DE8880 models with blue LED illumination, high-resolution video magnification, adjustable lighting, and interferometer options.
• Precision Manufacturing Services High-quality custom-engineered precision components with exacting tolerances for aerospace, defense, energy, telecom, and industrial sectors. Includes multi-axis machining, Swiss turning, jig grinding, EDM, and electro-mechanical assembly under an engineering-to-manufacturing (E2M) collaborative approach.
• Repair, Calibration, and Certification Services Complete repair and calibration services for all Domaille polishing machines, curing ovens, fixtures, laser cleavers, microscopes, and accessories. Annual recertification recommended. Service process includes evaluation, customer authorization, and certificate of accuracy upon completion.
• Air Cleanse Wand Kit Integrated pressurized fluid and filter system for debris-free cleaning operations. Features 2-micrometer filter eliminating process variables linked to contaminated cleaning fluids.
• Micro-G Precision Polishing System Precision polishing system for delicate applications including bare fiber. Enables simultaneous multi-fiber processing with programmable recipes, eliminates edge chipping and cracking, with programmable force control from 0 to 0.4 lbs.
• Gold Series Precision Rubber Pads Precision rubber pads with refined materials and advanced mixing technology. Holds durometer to within +/- 2 Shore A (compared to industry standard +/- 5), developed over three years to control process variation.
• Load Cell Pressure Kit MK15300 External digital load cell for verifying and calibrating polishing machine internal pressure output. Accuracy to +/-0.01lbs, compatible with all Domaille Engineering polishers, with USB cable and software included.
• EZ-Check Precision Wear Gauge Kit Process control system providing immediate measurements for polishing machine mandrel, fixture mounting hole, and ferrule hole wear. Helps customers determine when to repair or replace items.
• Cable Management System Modular cable management system designed to handle various cable types. Improves polishing results by minimizing effects of cable weight and distortion. Includes special versions for MPO and MTRJ cables.
• Drip Tray & Splash Guards User-friendly two-part drip tray and splash guard system improving drainage and reducing water contamination for polishing machines. Interchangeable with previous drip tray models.

Quantifiable outcome

• AbraSave® Unique Path Technology reduces polishing time by up to 50% and extends abrasive film life by up to 90%
• +3 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Two partnerships are on record, tiered minor.

• ADDMAN EngineeringminorOthers · 28 October 2025Domaille Engineering was previously a division of ADDMAN Engineering before being acquired in a carve-out transaction by Palm Peak Capital. The acquisition marked Domaille's transition to independent operation under PE ownership.
• Apollo (Authorized China Maintenance Station)minorImplementation/ SI/ Consulting PartnerApollo is Domaille Engineering's authorized maintenance station for customers located in China, providing repair, calibration, and service support for fiber optic polishing equipment in the Chinese market.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Senko Advanced Components: Global manufacturer of fiber optic connectors, adapters, and components including CS, SN, MDC, and MPO form factors. Comparable customer base to Domaille and overlapping process requirements for polishing and cleaving equipment.
• US Conec: Developer and manufacturer of high-density fiber optic interconnect products including MTP®/MPO, PRIZM® LightTurn, and MXC® connectors. A technology partner to Domaille whose connector standards drive demand for Domaille's polishing and laser cleaving equipment.
• Seikoh Giken: Japanese manufacturer of fiber optic polishing equipment, ferrules, and connectors. Directly competes with Domaille in polishing machines and fixtures for MT/MPO and single-fiber connectors, serving similar telecom and data center OEM customers globally.
• NTT-AT (Advanced Technology) / Nakanishi International: Manufacturer of fiber optic polishing machines (e.g., the AT-series) and related process equipment used by connector manufacturers worldwide. Direct head-to-head competitor to Domaille's APM polishing machine line for telecom and data center production.

Broad incumbents

• Thorlabs: Broad-line photonics equipment and component supplier offering fiber optic polishing and inspection products among its extensive portfolio. Overlaps with Domaille in microscope and polishing fixtures but serves a much broader photonics customer base.
• Viavi Solutions: Major provider of network test, measurement, and fiber optic inspection equipment. Overlaps with Domaille's OptiSpec® microscope and inspection product lines, serving similar telecom and data center customers with a broader solutions portfolio.
• Molex (Koch Industries): Large global interconnect and electronics manufacturer producing fiber optic connectors and assemblies. A potential customer for Domaille's polishing equipment and a competitor in finished connector products serving overlapping end markets.
• Amphenol: Global interconnect solutions giant with significant fiber optic connector and assembly operations. Comparable end-market exposure in telecom and data centers and a likely purchaser of polishing and cleaving equipment at scale.

Emerging players

• Syntec Optics: Custom optics and precision polymer/fiber optic component manufacturer serving defense, medical, and communications markets. Comparable precision manufacturing and fiber optic component capabilities at smaller scale, particularly relevant to defense-aligned buyers.

Regional players

• ADDMAN Engineering: Former parent of Domaille Engineering and precision metal additive manufacturing and contract machining provider. Comparable AS9100D-certified precision manufacturing capabilities, but now separated and operating as a distinct business post-carve-out.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@DomailleEngineering
• LinkedInlinkedin.com/company/domaille-engineering-llc

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds4 records

Investors5 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Domaille Engineering