Hot Wedge Welding

Spec Extreme

Packages start at $17,693 usd MSRP
or $358/mo

Spec Extreme Portable Hot Wedge Welder

Standardize your process with the Spec Extreme, a portable workhorse dedicated to weld the perfect seam every time. The Spec Extreme Wedge Welder has been designed as a "specific", single purpose welding machine to accomplish a particular weld style. The Spec Extreme is designed to be used as a stationary unit or an automatic welder for long seams while traveling on a track.
Best For:
  • Curtains - Truck Side
  • Geomembranes/Liners
  • Tarpaulins/Covers
Seam Type:
  • Hem Hem
  • Hem with Pocket Hem with Pocket
  • Hem with Rope Hem with Rope
  • Overlap Overlap
Features & Options

Features & Benefits

  • Available in overlap, hem or keder configuration
  • Excellent visibility of the welding area
  • Unique material guide system for each machine
  • Seam widths available 25mm, 38 mm, 50mm for product versatility
  • Swing- out wedge provides for easy cleaning, inspection and servicing
  • High speed option available for faster production speeds
  • Available in either 110V or 230V to suite your facility requirements

Technical Specs

Power Requirements

  • 120 Volts - Single Phase - 5 Amp.
  • 230 Volts -Single Phase - 2.65 Amp.

Power Consumption

  • Approx. 0.80kW

Maximum Temperature

  • 525˚C (977˚F)


  • Width: 0.33m (12")
  • Length: 0.584m (22")
  • Height: 0.33m (12")



  • 21kg (46lb)

Seam Width

  • 10 - 50mm (0.5-2")

Welding Speed

  • Up to 21m/ min - High Speed Option*

* Depending on the application, the seam width and the type of material used
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
Hot Wedge Spec Welding Machine for Overlapping Tents, Tarps & Geomembranes
Portable Hot Wedge Spec Welding Machine for Tents, Tarps & Geomembranes
Spec Hem Training
Spec High Speed Training
Spec Overlap Training

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.