Hot Air Welding

T300 Curve

Packages Starting at $32,730 usd MSRP
or $675/mo

T300 Curve | Seam Welding Machine for Inflatables

Miller Weldmaster's T300 Curve produces airtight and waterproof seams for 2D and 3D inflatables. Discover how the T300 Curve hot-air and hot-wedge welding machine can help you create seams for uniquely shaped inflatables.
Best For:
  • Aerospace
  • Athletic Mats
  • Flexible Storage Tank/Bladders
  • Inflatable Boats
  • Paddle Boards
  • Pools
  • Inflatables
  • Outdoor Furniture
Seam Type:
  • Butt Seam Butt Seam
  • Coverstrip Coverstrip
  • Double Fold Double Fold
  • Drop Stitch Drop Stitch
  • Fin Prayer Seam Fin Prayer Seam
  • Flat Seam Tube Flat Seam Tube
  • Fold Overlap Fold Overlap
  • Hem Hem
  • Overlap Overlap
  • Tube Tube
  • Extrusion Beading Extrusion Beading
  • Webbing - SEG Webbing - SEG
Features & Options

Features & Benefits

  • Quick-setting recall with touch screen and recipe storage of 25 memory settings
  • Increased product efficiency with dual arms to configure straight and curved seams
  • Quick, repeatable, precision- head adjustments
  • Quick, easy guide change for multiple seam configurations
  • Can be customized to fit your exact specifications


Technical Specs

Power Requirements

  • 208-240 Volts - Single Phase - 25 Amperes

  • 380-400 Volts - Single Phase - 16 Amperes

Air Requirements

  • 100 PSI @2 CFM

  • +12 CFM for ShopAir

Power Consumption

  • Approx. 6kW

Maximum Temperature

  • Hot Air: 730˚C (1,346˚F)
  • Hot Wedge: 450˚C (842˚F)

Throat Width

  • 1m (39")


  • Width: .6m (23")

  • Length: 2m (79')

  • Height: 1.65m (65")


  • 433kg/955lb

Seam Width

  • 10 - 50mm (1/2"-2")**

Welding Cycle

  • Up to 30m/min (100ft/min)*

* Depending on the application, the seam width and the type of material used

** Additional guides might be necessary

Our Training Process


Step One

Schedule Your Training

A Miller Weldmaster certified field service engineer will contact you to schedule installation and training at your facility.



Installation Preparation

We provide you with everything you need to know to get your team ready for installation and training.



Staff Training

Your staff will receive extensive instruction on welding equipment operation and maintenance and how to produce your product.

Machine Videos

  • Overview & How Tos
  • Training Videos
T300 - Our Most Versatile Welder
Single Roller For Tight Curves
How to make an Inflatable Product - T300 Extreme I Miller Weldmaster
Welding Inflatable Boats | Hot Air Welding Machine
Hot Air & Wedge Seam Welding Machine, Inflatable Products
Welding Drop Stitch Products using Hot Air Technology - T300 Extreme
Hot Air Welding Inflatable Tube Ring
Overview of the Touch Screen
Tech Tip I How to Set Up your Overlap Guide I T300 Extreme
T-SERIES I How to Adjust your Hem Guide I Miller Weldmaster
Tech Tip I How to Change HMI & PLC Battery I T300 Extreme
Tech Tip I Start Weld Edge Fabric I T300 Extreme
Tech Tip I How to Tighten your Weld Rollers I T300 Extreme
How To Switch From a 1 Inch To A 2 Inch Weld Roller
Changing Heat Systems on T300 I Miller Weldmaster
How To Clean your Air Filters on the Compressors
Explaining the Upper Roller Speed

Service & Resolution Center

Our service team is dedicated to keeping our customer’s businesses running at optimal performance and assisting with any solutions you need. We are standing by to help you.

Contact Us Today!

Ready to get started or just have more questions for us? Simply fill out this form and we will be in touch with you shortly.