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Mica – Waterjet Cutting, Laser Cutting & CNC Machining | Custom Parts with Instant Quote & Free Delivery Canada

MICA

mica board

Free Shipping Canada
orders over $250 excluding oversize parcels. please see details. 

MANUFACTURING PROCESSES OFFERED

CNC CUTTING & ENGRAVING
LASER CUTTING & ENGRAVING

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At uMake.ca – Online Factory, we produce custom Mica parts with precision waterjet cutting, laser cutting for thin material, and CNC machining—perfect for electrical insulation, heat shields, gaskets, industrial components, and decorative panels. Mica is a heat-resistant, electrically insulating mineral-based material that is durable, stable, and easy to work with, making it ideal for both technical and decorative applications. Waterjet cutting provides clean, burr-free profiles for thicker sheets, laser cutting ensures precise, intricate cuts on thin material, and CNC machining allows for detailed features and complex geometries with tight tolerances. With uMake.ca’s easy online quoting tool, you can upload your design and receive instant pricing and lead time, and with fast, free shipping across Canada on eligible orders, your Mica parts arrive ready for assembly—no minimums and fast turnaround. Free Delivery Canada

Mica Properties & Grades

What is mica and why is it specified for high-temperature electrical insulation applications? Mica is a group of silicate minerals that naturally cleave into thin, flexible, electrically insulating sheets. When processed into rigid mica board or mica paper laminate (phlogopite or muscovite bonded with silicone or epoxy), it delivers electrical insulation performance up to 1000 °C, flame resistance, and dimensional stability under thermal cycling that no polymer can match. uMake cuts mica sheet via waterjet cutting and laser cutting (thin grades) for gaskets, heating element insulators, electrical panel spacers, and heat shields. Quote at app.umake.ca.
What mica grades and thicknesses does uMake process? uMake processes phlogopite mica board (silicone-bonded, high-temperature to 900+ °C), muscovite mica board (epoxy-bonded, slightly lower temperature but higher dielectric strength), and mica paper laminate in thicknesses from 0.5 mm to 10 mm. Both rigid board and flexible mica sheet are processable. For mica gaskets and thin spacers, laser cutting provides precise profiles on thin grades. For thicker rigid board, waterjet cutting avoids the delamination risk of mechanical sawing. Contact quoting@umake.ca for specialty grades.
What industries most commonly order mica cutting from uMake? Electrical panel and switchgear manufacturers, industrial heating element fabricators, appliance manufacturers (toasters, ovens, hair dryers), aerospace thermal protection designers, and high-temperature gasket fabricators are the primary mica customers at uMake. Mica's irreplaceable combination of electrical insulation at elevated temperatures — properties no polymer material can match — makes it essential in any application where insulation must survive temperatures above 150–200 °C.
What performance advantages does mica provide over polymer insulators at high temperature? Standard polymer insulators (PTFE, Nomex, PEEK) begin to lose mechanical properties above 200–260 °C. Phlogopite mica board maintains its electrical insulation properties and structural integrity to over 900 °C — making it the only practical choice for insulation in direct contact with heating elements, kiln heating systems, and high-power motor windings. Beyond temperature, mica is flame-retardant (it does not burn), resistant to most chemicals, and dimensionally stable under thermal cycling — properties polymers cannot replicate.

Processing Mica at uMake

How does uMake cut mica, and what edge quality does waterjet cutting produce? uMake's 5-axis waterjet cuts mica board to ±0.1 mm tolerance with no heat-affected zone and no delamination at cut edges — the critical advantage over mechanical sawing, which induces edge delamination in layered mica laminates. Waterjet produces clean, burr-free edges on both thin flexible mica and thick rigid board. For thin mica sheet (below 2 mm), CO₂ laser cutting produces precise profiles with acceptable edge quality for non-structural insulation applications. Submit your gasket or insulator DXF at app.umake.ca for an instant quote.
Can uMake produce mica gaskets, insulators, and custom-profiled heat shields? Yes — mica gasket cutting is one of uMake's most precise waterjet applications. Gasket profiles with multiple bolt hole patterns, complex inner apertures, and tight-tolerance sealing surfaces are produced from customer DXF files to ±0.1 mm. Mica heat shields for automotive exhaust, industrial oven, and electrical panel applications are routed or waterjet-cut to the 3D shield geometry. For custom mica insulator stacks, uMake cuts multiple plies to identical geometry for customer lamination. Contact quoting@umake.ca for multi-ply insulator packages.

Is there a minimum order quantity for acrylic laser cutting? Zero. None. Not one. You can order a single acrylic piece — one custom earring, one award, one prototype enclosure panel — and receive the same precision, the same flame-polished edge quality, and the same fast shipping as a 500-piece production run. There are no setup fees, no plate charges, and no penalty for small quantities. This is one of the most important reasons Canadian makers, small businesses, and Etsy sellers choose uMake. You can: Test a new product design with a single prototype before investing in inventory Fulfill one-off custom orders for clients without overstocking Replace a single damaged piece from a display or installation Iterate your design multiple times without commitment to large batches Order one piece today at app.umake.ca — no minimums, no excuses.

What file formats work best for mica gasket and insulator orders at uMake? DXF is the standard format for mica gasket and flat insulator profiles — include all bolt holes, apertures, and profile geometry in a single closed-path DXF. For complex 3D heat shield geometries, STEP files provide complete geometry for waterjet path planning. Include mica grade and thickness specification in the order notes at app.umake.ca — this affects cut parameters. For gaskets requiring sealing surface smoothness specifications, note the requirement and the team will confirm achievability.

Mica Applications by Industry

How is mica used in electrical panel and switchgear manufacturing? Mica board is the standard insulating material between live conductors and ground planes in medium and high-voltage switchgear, motor control centers, and busbar insulation systems. Its combination of dielectric strength (up to 200 kV/mm for some grades), temperature resistance, and flame retardancy makes it irreplaceable in applications where polymer insulators would degrade, creep, or ignite under fault conditions. uMake cuts mica panel insulators, busbar spacers, and arc-chute dividers from customer DXF files at app.umake.ca with no minimum order.
What role does mica play in industrial and commercial heating equipment? Mica board is the substrate for wound resistance heating elements in industrial ovens, furnace heating assemblies, commercial appliances, and infrared heating panels. The mica supports the resistance wire mechanically, insulates it electrically from the appliance body, and transfers radiant heat efficiently because of its thermal stability. uMake cuts mica heating element substrates to customer winding geometry — including the serpentine slot patterns and terminal mounting holes that define the heating element layout.
What automotive and aerospace thermal protection applications use mica from uMake? Mica heat shields protect electrical harnesses, fuel lines, and structural composites from engine exhaust, turbocharger, and brake heat in automotive and aerospace applications. Its formability in thin grades allows it to be shaped around complex 3D profiles while maintaining insulation. Aerospace applications include insulation blankets under electronic bays adjacent to propulsion systems and thermal barriers in landing gear bays. uMake's waterjet produces mica heat shield blanks to ±0.1 mm — fit-checked to your assembly geometry.
What medical and laboratory applications use mica from uMake? Mica's optical transparency in thin sheets (muscovite mica cleaves to micron-thick transparent sheets) has historically made it valuable for microscopy cover slips and optical windows. In modern laboratory equipment, mica board provides electrical insulation in high-temperature sample processing equipment, tube furnace insulation, and vacuum chamber heating element support. uMake processes mica for analytical instrument manufacturers requiring precise insulator geometries not achievable with standard punched mica parts.

Mica vs. Other Insulating Materials

When should I specify mica over PTFE or Nomex for an electrical insulation application? PTFE and Nomex provide excellent insulation to 260 °C and 200 °C respectively — adequate for most motor winding and electrical panel applications. When operating temperature exceeds 200 °C continuous, when flame performance must meet the most stringent standards, or when direct flame or arc exposure is possible, mica is the correct choice. For standard industrial electrical insulation up to 180 °C, Nomex is lighter and easier to handle. For temperatures above 500 °C or direct contact with heating elements, mica is the only viable option.
How does mica compare to ceramic fiber board for high-temperature insulation? Ceramic fiber board (alumina-silica) provides better thermal insulation (lower conductivity) than mica and operates to higher temperatures (1200+ °C for refractory grades). However, ceramic fiber is friable (generates respirable ceramic fibers), has low mechanical strength, and provides no electrical insulation. Mica is the correct choice when both electrical insulation and thermal resistance are required simultaneously — the unique combination that makes mica irreplaceable in electrical heating applications. For purely thermal insulation without electrical requirements, ceramic fiber is superior.
Can mica be combined with other materials for composite insulator assemblies? Yes — mica insulators are commonly combined with metal structural elements (stainless or aluminum mounting plates), PTFE sealing faces (for flanged connections requiring both sealing and insulation), and fiberglass or phenolic backing substrates for mechanical reinforcement. uMake's waterjet cuts mica to profiles matching mating metal components for composite insulator assemblies. For complete insulator assemblies requiring multiple material components, contact quoting@umake.ca with your full BOM.
Can uMake provide mica in custom thicknesses or multi-ply laminate stacks? Standard mica board thicknesses are 0.5 mm, 1 mm, 1.5 mm, 2 mm, 3 mm, 4 mm, 5 mm, and 6 mm. For thicknesses not available as standard stock, mica board can be laminated and post-cut — contact quoting@umake.ca for custom laminate specifications. For applications requiring specific dielectric strength per unit thickness (precision insulator stacks), provide the dielectric specification and the team will recommend the correct grade and ply combination.

Ordering Mica at uMake

What is the minimum order for mica cutting at uMake? No minimum order — one mica gasket or insulator ships as economically as one hundred. Pricing at app.umake.ca is calculated on geometry and material consumed, with no setup fees or minimum sheet charges. Volume pricing scales automatically at larger quantities. For recurring mica insulator orders on production equipment service cycles, one-click reorder from your saved order history at app.umake.ca.
How quickly can uMake produce and ship mica parts across Canada? Mica parts produce in 1–2 business days for standard profiles. Shipping from Montreal: GTA and Ottawa 1–2 business days; Prairie provinces 3–4 days; BC 4–5 days. Express production and priority shipping available at app.umake.ca. For urgent equipment repair requiring replacement mica gaskets, contact quoting@umake.ca directly — uMake frequently accommodates same-day production for emergency maintenance orders on qualifying geometries.
Can uMake maintain mica gasket consistency across repeat production batches? Yes — app.umake.ca stores every order permanently, including waterjet parameters and mica grade. Repeat orders produce dimensionally identical parts to the original. For equipment maintenance programs requiring periodic mica gasket replacement (industrial ovens, switchgear service intervals), one-click reorder ensures replacement parts match the original geometry exactly.
Does uMake provide material certifications for mica parts used in regulated applications? Yes — mica material data sheets and supplier certifications are available on request. For electrical panel and switchgear applications requiring dielectric strength certification, temperature class confirmation, or flame-retardancy documentation, specify the required certifications at quoting@umake.ca when placing your order. Standard orders through app.umake.ca include material type and grade in production documentation.

Technical FAQ — Mica at uMake

What dielectric strength does mica board provide, and how does it compare to common polymer insulators? Phlogopite mica board achieves dielectric strengths of 15–60 kV/mm depending on grade and thickness — comparable to PTFE (20 kV/mm) and superior to most polyimide films at elevated temperatures. The critical advantage is that mica maintains its dielectric strength at operating temperatures where PTFE (260 °C limit) and polyimide (300 °C limit) begin to lose properties. For medium-voltage applications above 200 °C, mica is the only material that maintains both mechanical integrity and dielectric performance.
Is mica environmentally safe to handle and dispose of? Natural mica is a mineral — it is chemically inert and non-toxic in its solid form. Cut mica produces fine mineral dust that should be managed with standard mineral dust controls (N95 respirator, ventilation) during machining. The silicone or epoxy binder in engineered mica board may produce minor fumes during laser cutting — standard industrial ventilation is adequate. Mica board is not recyclable in standard streams and should be disposed of as industrial waste. The raw mineral mica is naturally occurring and does not pose environmental contamination risk in disposal.
Can mica be stamped, punched, or formed as an alternative to waterjet cutting? Thin flexible mica sheet (below 1 mm) can be stamped and die-cut for high-volume production of repetitive gasket shapes — more economical than waterjet at volumes above 1000 parts per year for a fixed geometry. Thicker rigid mica board cannot be stamped without delamination. For prototyping, short runs, and custom geometries, uMake's waterjet provides better economics and flexibility than die tooling. For production volumes above 500 pieces per year of a fixed gasket design, contact quoting@umake.ca to discuss whether stamping tooling investment is justified.
How should mica parts be stored and handled before installation? Store mica board flat and dry — moisture absorption can reduce dielectric strength and cause delamination in some binder systems. Avoid bending thick rigid mica board; it is brittle and cracks along cleavage planes. Handle cut mica gaskets with clean gloves to prevent contamination of sealing surfaces. For electrical applications, ensure mica surfaces are clean and free from conductive contamination before installation. Thin flexible mica sheet should be supported flat during storage to prevent set and curl that can cause installation difficulties.

FAQ / Q&A Mica Fabrication

Countersink Specs
Values3
Min countersink part size
1" x 4"
Max countersink part size
14" x 46"
Countersink Min Minor
0.130"
Countersink Max Major
0.472"
Countersink Min Hole Center to Material Edge
0.361"
Properties
Value
Advertised Thickness
0.125"
Gauge
N/A
Thickness tolerance positive
0.007"
Thickness tolerance negative
0.006"
Top/Bottom Finish
Textured top side, smooth bottom
Sourced from
Canada
General Details
Properties 2
Value2
Cutting process
CNC Router
Cut tolerance +/-
0.005"
Flatness tolerance before cutting
+/- 0.030" per foot
Min part size
1" x 2"
Max part size
44" x 30"
Min hole size
0.125"
Min bridge size
0.125"
Min hole to edge distance
0.38"
Tab and slot Tolerance
0.015"
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Countersink Specs
Values3
Min countersink part size
1" x 4"
Max countersink part size
14" x 46"
Countersink Min Minor
0.130"
Countersink Max Major
0.472"
Countersink Min Hole Center to Material Edge
0.361"
Countersink Specifications
Tapping Specs
Value4
Largest Tap
M10 x 1.5
Smallest Tap
M4 x 0.7
Min Flat Part Size Tapping
0.949" x 1.5"
Max Flat Part Size Tapping
36" x 46"
Tapping Min Hole to Edge
0.063"
Tapping Min Hole Center to Material Edge
Tap hole size/2 +0.063"
ABS Properties
Value5
Material Composition
Acrylonitrile Butadiene Styrene
Density
65.664 lb/ft^3
Heat treatment process
N/A
ASTM
D4673
Tensile Strength (Ultimate)
4.5 ksi
Tensile Strength (Yield)
3.5 ksi
Shear Strength
2 ksi
Shear Modulus
75 ksi
Fatigue Strength
2 ksi
Izod Impact Strength
6.3 ft-lbs/in
Coefficient of Friction
0.19 – 0.21
Rockwell
R 90 - R100
Elongation at Break
25%
Elastic Modulus
340 ksi
Poisson’s Ratio
.35
Thermal Conductivity
0.22 BTU/h-ft °F
Vicat Softening Temp
150 °F
Melting Point
390 °F
Magnetic
No
Does it Rust
No
ABS Properties
Tapping Specifications
CNC Router Cutting Specifications

CHARACTERISTICS

This heat pressed laminate material is comprised of many layers of phlogopite paper bonded together by either silicon glue or epoxy resin to form a flat sheet

High thermal stability

High dimensional stability

Flame retardant at high temperatures

Great high-voltage electrical insulation

Abrasion resistant

DISADVANTAGES

Brittle and prone to cracking

PRODUCT AND INDUSTRY APPLICATIONS

electrical appliances, furniture

Mica is a group of silicate minerals known for their excellent electrical insulating properties, heat resistance, and ability to be split into thin, flexible sheets. Mica is typically extracted from underground mines through drilling and blasting, followed by crushing and sorting the raw material into various grades. The mineral is then processed into thin, flexible sheets or powders, depending on its intended use. Mica is widely used in electrical and electronic applications such as insulators, capacitors, and wiring, as well as in cosmetics, paints, and coatings for its shimmering appearance. It is also used in the automotive and construction industries as a heat-resistant material in gaskets and insulation, as well as in the production of mica paper and mica boards.

The advantages of mica include its exceptional electrical insulation properties, high thermal stability, and resistance to corrosion, making it ideal for use in high-temperature and high-voltage applications. It also has a low moisture absorption rate and good mechanical strength, which makes it durable in demanding conditions. Additionally, mica's natural sparkle and color make it popular in the cosmetics industry for use in makeup products like eyeshadows, highlighters, and nail polish. However, mica also has some disadvantages: it is brittle and can break or flake under stress, limiting its use in some applications. The mining of mica, especially in certain regions, has raised ethical concerns due to labor practices and environmental impact. Furthermore, mica powder can be harmful when inhaled in large quantities, which requires precautions during manufacturing and processing. Despite these issues, mica remains an essential material in various industries due to its unique combination of properties.

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