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Composite Repair Equipment & Materials

WichiTech Industries — the industry standard for portable composite repair systems. From the world’s smallest handheld hot bonder to the world’s most powerful dual-zone field repair unit, WichiTech equipment sets the benchmark for ease of operation, safety, and reliability in composite and metal structural repair.

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Coast-Line International carries the full WichiTech Industries hot bonder line — the industry’s most trusted portable composite repair systems for curing composite repairs in the field, in the hangar, and on the bench. WichiTech hot bonders repair metal, Kevlar®, carbon, boron, and fiberglass composites safely and cost-effectively. WichiTech also supports Applied Heat and Pyrobond hot bonders and equipment. Contact us to discuss your specific repair application and which system is right for your program.

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Tell us what you need and our team will respond within one business day with pricing and availability.

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Portable Temperature-Controlled Cure Systems for Composite Repair

A hot bonder is a portable electronic controller that manages the cure cycle for composite structural repairs in the field — precisely controlling temperature via heating blankets and maintaining vacuum pressure throughout the cure. The controller monitors multiple thermocouples simultaneously, activates audible alarms for out-of-tolerance conditions, and records the cure cycle for quality documentation. Hot bonders replace the autoclave or oven for on-aircraft, in-hangar, and remote site repairs where moving the structure to a permanent cure facility is impractical or impossible.

01
Prepare the Repair
Damage is removed, the area is scarfed or sanded to profile, and replacement composite plies or pre-preg patches are laid up with appropriate materials.
02
Apply Vacuum Bag
A complete vacuum bag assembly is built over the patch — peel ply, bleeder, breather, and a silicone heating blanket are placed, then sealed with sealant tape.
03
Connect & Program
Thermocouples are attached to the repair and connected to the hot bonder. The cure cycle — ramp rate, dwell temperature, dwell time — is programmed into the controller.
04
Cure & Document
The hot bonder controls temperature and vacuum automatically throughout the cure, generates audible alarms for any out-of-tolerance condition, and prints the cure record.
Hot Bonder

WichiTech HB-1

Industry's Smallest · Most Portable
HB-1 Series · WichiTech Industries
WichiTech Industries Inc. · Randallstown, MD
HB-1 Composite Repair System
"The industry's smallest, most powerful and economical hot bonder for curing composite repairs."
At just 3.5 pounds, the WichiTech HB-1 is the most compact full-featured hot bonder on the market — small enough to hold in one hand, powerful enough to tackle any repair that a larger, more expensive unit can handle. This handheld unit performs equally well from the workbench to the tightest confined spaces and the highest places on the aircraft, delivering full hot bonder functionality where larger units simply cannot go. The HB-1 ships ready to work with its own standard vacuum line and heating blanket — all it needs is a vacuum source, either shop air with a venturi attachment or a WichiTech Portable Vacuum Pump. Four active thermocouple inputs provide complete cure zone monitoring with the same fail-safe audible alarm and safety systems found on much larger and more expensive systems. What sets the HB-1 apart from all other compact bonders is its network capability: multiple HB-1 units can be seamlessly interconnected to support extra-large or very complex repairs that exceed the capacity of a single zone — scaling from a single unit on a small skin repair to a networked array for a large structural patch.
Specifications
Weight3.5 lbs (1.6 kg)
Thermocouple Inputs4 (standard) · 8 (extended version)
Vacuum SourceShop air venturi or portable pump
Heating BlanketIncluded standard
NetworkingYes — multiple HB-1s linkable
Explosion Proof VersionAvailable (4 TC inputs)
Made InUSA
Key Features
3.5 lb Handheld Size
The smallest full-featured hot bonder in the industry. Goes anywhere — tight confined spaces, elevated positions, remote field sites.
Networkable — Scale to Any Repair
Interconnect multiple HB-1 units for extra-large or complex repairs, without the cost of a dual-zone system for jobs that only occasionally require expanded coverage.
️
Full Safety System
Four active thermocouple inputs with audible alarms for temperature and vacuum out-of-tolerance conditions — the same protection as much larger units.
Explosion Proof Version
Certified for NEC Class I, Division 1 hazardous environments — fuel tanks, hangars with active fuel, and other restricted areas.
️
Ready to Use
Ships complete with standard vacuum line and heating blanket. Add a vacuum source and start working immediately.
Industry's Smallest Hot Bonder 3.5 lbs 4 TC Inputs Standard 8 TC Inputs Available Networkable — Multi-Unit Explosion Proof Version Carbon · Kevlar® · Boron · Glass USA Made
🟠 HB-2 Series · WichiTech Industries
WichiTech Industries Inc. · Randallstown, MD · Custom Built to Order
HB-2 Composite Repair System
"The world's hottest hot bonder."
The most powerful portable composite repair system WichiTech makes — the HB-2 is individually manufactured to your specifications, giving you exactly the configuration your program demands. At 35 pounds, the HB-2 travels in a rugged, impact-resistant suitcase-style enclosure with all components shock-mounted inside for years of reliable field service. Programming is straightforward: menu-driven from the keypad or from a pre-set library, as simple to operate as a microwave with its easy-to-read digital display and menu-listed functions. The HB-2 scales from a single-zone unit (one heating zone, one vacuum zone) all the way to a dual-zone unit with two completely independent programmed heating zones at 20 amps each and two individual adjustable vacuum zones — allowing two separate, independently-programmed cure cycles to run simultaneously on the same controller. Fail-safe protection is provided by monitoring of multiple thermocouples; audible alarms guard against temperature and vacuum conditions that could compromise the repair. A paper printout of the cure program is produced at the start of every cure. A revised printout is automatically generated if the program is modified mid-cure. The HB-2 also supports 400 Hz / 115V aircraft power (APU or engine-generated) in its Explosion Proof variant, making it a truly portable system capable of being powered directly from the aircraft — a first in the industry.
Specifications
Weight35 lbs (15.9 kg)
Max ZonesDual Zone — 2 independent
Power per Zone20 Amps each
Vacuum ZonesUp to 2 — individually adjustable
TC InputsUp to 16 (dual zone)
Zone ColorsRed Zone · Yellow Zone (coded)
Cure PrintoutYes — start + mid-cure revision
Aircraft Power400 Hz / 115V (Explosion Proof)
EnclosureImpact-resistant suitcase · shock-mted
ConfigurationCustom built to order
Made InUSA
Key Features
Dual Independent Zones — 20A Each
Two completely separate heating and vacuum zones run simultaneously on one unit. Two repairs at once. Two cure cycles programmed independently — never one controlling the other.
Simple as a Microwave
Menu-driven programming with pre-set library. The digital display is easy to read in field conditions and every function is listed — no training courses required to run a cure.
Automatic Cure Documentation
Prints the full cure program at start. Prints again automatically if any mid-cure program modification is made. Quality record is built into every cure.
APU / Aircraft Power Ready
The Explosion Proof variant runs on 400 Hz / 115V generated by the aircraft engine or APU — a true on-aircraft hot bonder with no ground power required.
Mid-Cure Edit & Lockout
Programs can be edited during a cure without stopping the process. Lockout mode prevents unauthorized modification once a program is locked for production use.
HB-2 Available Configurations
HB-2 Single Zone
One independent heating zone and one vacuum zone. Full HB-2 power and documentation in a single-repair configuration. The most economical HB-2 entry point.
Single Zone
HB-2 Dual Zone
Two fully independent heating zones (20A each) with two separate vacuum zones — two simultaneously programmable and independently running cure cycles on one unit.
Dual Zone · 20A × 2
HB-2 Explosion Proof
NEC Class I, Division 1 and MIL-STD-810F certified. Built-in electric vacuum pump — no hoses, no venturi, no ground power required. Runs on 85–265 VAC, 47–440 Hz, including 400 Hz aircraft APU power. Available single or dual zone.
NEC Cl. I Div. 1 · MIL-STD-810F
World's Hottest Hot Bonder Dual Zone — 20A Each 16 Thermocouple Inputs Cure Printout — Auto Documentation APU / 400 Hz Aircraft Power NEC Class I Div. 1 (EX version) MIL-STD-810F (EX version) Custom Built to Order USA Made
Accessories

WichiTech Hot Bonder Accessories

Silicone Rubber Heating Blankets
High-quality silicone rubber heating blankets available in almost any standard shape and size for use with the HB-1 and HB-2 Series. Custom blankets can be manufactured to your exact size and shape specifications to accommodate any composite repair geometry — flat, curved, or complex contoured surfaces.

Custom Sizes Available
Blanket Test System (BTS)
The WichiTech F4BTS001 Blanket Test System is a small handheld unit for verifying the operational status of silicone rubber heating blankets and equivalent resistive heating mechanisms. External ports connect to a PC, serial printer, an HB-1 or HB-2, or other auxiliary blanket test equipment (UHTP©). An optional rechargeable battery-powered printer provides a permanent record of each blanket test.
P/N F4BTS001
WichiTech Portable Vacuum Pump
A compact portable vacuum pump designed specifically for use with the HB-1 — eliminating the need to carry a heavy shop vacuum pump into the field. Contained in a nylon carry bag with power cord and vacuum hose. Available in 110V / 60 Hz or 220V / 50 Hz configurations for domestic and international operation.

110V & 220V
Oven Control System (OCS)
A modularized oven temperature monitoring and control system compatible with the HB-1 and HB-2. Allows simultaneous monitoring of multiple items curing within an oven, each connected to a dedicated block of thermocouples. The display segments to show details for each curing item independently. Control based on median, coldest, or hottest thermocouple is selectable per the cure specification.
Oven Monitoring
Weld-X™ Thermocouple Spot Welder
The WichiTech Weld-X™ (P/N F4SPT000) generates high arc temperatures that easily fuse all standard thermocouple materials including platinum and tungsten. Welds pairs of wires in gauges of #20 or finer, and individually for gauges as heavy as #16. Essential for fabricating and repairing thermocouples in the field — maintaining the accuracy of temperature monitoring throughout the repair.
P/N F4SPT000
Applied Heat & Pyrobond Support
WichiTech Industries also provides full support for Applied Heat and Pyrobond hot bonders and equipment. If your program runs legacy Applied Heat or Pyrobond systems, Coast-Line can connect you with WichiTech's service and replacement parts support to keep your existing equipment running. Contact us to discuss your specific equipment and service needs.
Legacy Support

Factory Specifications · Custom Configuration · Full Support

Every WichiTech HB-2 is individually manufactured to your specifications. Coast-Line International works directly with WichiTech to configure the right system — number of zones, thermocouple count, power requirements, explosion proof certification, and accessories — for your repair program. Contact us to start the specification process.

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