Hot Air Welding, Hot Wedge Welding

T300 Flex

Packages Starting at $33,094 usd MSRP
or $682/month

T300 Flex | Versatile Hot Air & Hot Wedge Welding Machine

Our most universal welder, the T300 Flex uses hot air and hot wedge technologies with an array of seam types. Discover how the T300 Flex can help you finish tents, shelters, tarps, covers and more in no time.
Best For:
  • Aerospace
  • Athletic Mats
  • Banners
  • Containment Booms
  • Conveyor Belts
  • Cured In Place Pipeline
  • Curtains - Agriculture
  • Curtains - Truck Side
  • Roller Doors
  • Evacuation Slides
  • Filtration
  • Mattresses
  • Pool Covers
  • Pools
  • Roofing Membranes
  • Screens
  • Shelters Structures
  • Sifting Screens
  • Signs
  • Tarpaulins/Covers
  • Tents
  • Tubes
Seam Type:
  • Butt Seam Butt Seam
  • Channel Seam Channel 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
  • Hem with Pocket Hem with Pocket
  • Hem with Rope Hem with Rope
  • Keder Keder
  • Multi Roll Multi Roll
  • Overlap Overlap
  • Sewn Seam Sewn Seam
  • Tube Tube
  • Extrusion Beading Extrusion Beading
  • Velcro Webbing Velcro Webbing
  • Webbing - SEG Webbing - SEG
Features & Options

Features & Benefits

  • Quick setting recall with easy operation touch screen and recipe storage
  • Increased product versatility with dual arms to configure straight or curved seams
  • Quick, repeatable head adjustments for precision welding
  • Available in hot air, hot wedge or both for product versatility
  • Multiple seam configurations for quick, easy guide change
  • Can be customized to fit your exact specifications

Technical Specs

Power Requirements

  • 208-240 Volts - Single Phase -25 Amp.
  • 380-400 Volts - Single Phase -16 Amp.


Air Requirements

  • 100 PSI @2 CFM

  • +12 CFM for ShopAir

Power Consumption

  • 6kW

Maximum Temperature

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

Throat Width

  • 1m (39")


  • Width: 0.6m (23")
  • Length: 1.5m (59")
  • Height: 1.5m (59")


  • 433kg/955lb

Seam Width

  • 10 to 50mm (0.5 - 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

Trust Miller Weldmaster to get your started!


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 Yet
Welding a Bucket
Welding 30 Inch or Bigger
PVC, Vinyl, Acrylic Fabric Welding & More
How To Make An Inflatable Product
T300 Continuous Hot Air Welder
Custom Heat System for Welding Roof Flashings
The Fastest Way To Finish Banners & Signs
Weld Zipper Onto Your Products
Overview of the Touch Screen
Changing Heat Systems
How to Set Up your Overlap Guide
How to Change HMI & PLC Battery
How To Start Welding At The Edge Of Your Fabric
How to Tighten your Weld Rollers
How To Align Your Wedge
T-SERIES I How to Adjust your Hem Guide I Miller Weldmaster
How To Set Up For Acrylic Welding
How To Change Your Heat System
How To Switch From a 1 Inch To A 2 Inch Weld Roller
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.