The Mestek Machinery Blog

Improved Seam Welding with the QuickStitch 2.0 Rotary Stitch Welder

Written by Mestek Machinery | August 25, 2026

The QuickStitch 2.0 Rotary Stitch Welder from Lockformer was designed to meet the needs of today’s duct fitting fabrication. Let's take a look at the key features and benefits of the machine and how it can maximize productivity in your seam welding operations.

Key Features of the Lockformer QuickStitch 2.0 Rotary Stitch Welder

The QuickStitch 2.0 optimizes your welding production output by giving the operator a controlled and consistent longitudinal weld from end to end with a minimal overlap. With a new operator-friendly touch-screen control panel wth a memory feature for ease of production, the operator can choose from a continuous or stitch weld that provides an excellent solution for welding of both galvanized and stainless steel straight tubes and round fittings.

A manual welding pressure system is also included for welds and changeovers. The system also features digital temperature switches for chiller temperature and water flow adjustments. The QuickStitch 2.0 produces air-tight weld seams with an adjustable weld speed from 3 ft/min to 49 ft/min for maximum productivity and efficiency.

QuickStitch 2.0 Specifications by Model

The QuickStitch 2.0 is available in three (3) models to meet your operational needs allowing you to create longitudinal seams of 2” - 40”, 2” - 50”, or 2” - 60” respectively.

Model

40"

50"

60"

Galvanized Steel Material Thickness Range

30ga to 18ga
(0.012" to 0.048")

30ga to 18ga
(0.012" to 0.048")

30ga to 18ga
(0.012" to 0.048")

Stainless Steel Material Thickness Range

30ga to 18ga
(0.012" to 0.048")

30ga to 18ga
(0.012" to 0.048")

30ga to 18ga
(0.012" to 0.048")

Diameter Range

3" to 40"

3" to 40"

3" to 40"

Longitudinal Seam Length

2" to 40"

2" to 50"

2" to 60"

Standard Overlapping
(Special on Request)

0.236"
(1/4" nominal)

0.316"
(5/16" nominal)

0.316"
(5/16" nominal)

Power, Stitchwelder

460VAC, 3PH, 60Hz, 125A

460VAC, 3PH, 60Hz, 125A

460VAC, 3PH, 60Hz, 125A

Power, Chiller

120VAC, 1PH, 60Hz, 10A

120VAC, 1PH, 60Hz, 10A

120VAC, 1PH, 60Hz, 10A

Copper Wire

0.078" round
(optional 0.070" round)

0.078" round
(optional 0.070" round)

0.078" round
(optional 0.070" round)

Weld Speed

3 ft/min to 49 ft/min

3 ft/min to 49 ft/min

3 ft/min to 49 ft/min

Dimensions / Weight

Length: 115"

Width: 45"

Height: 69"

Machine Weight: 1,323 lbs.

Copper Wire Coil Weight: 44 lbs.

Length: 115"

Width: 45"

Height: 69"

Machine Weight: 1,356 lbs.

Copper Wire Coil Weight: 44 lbs.

Length: 115"

Width: 45"

Height: 69"

Machine Weight: 1,389 lbs.

Copper Wire Coil Weight: 44 lbs.

QuickStitch 2.0 Rotary Stitch Welder Demo

Benefits of Longitudinal Seams in HVAC Fabrication

Most HVAC duct leakage occurs at the notch hole that is produced at the top and bottom of a duct section at the transverse duct connection to the fan or the unit. A full-engagement longitudinal seam which allows you to deliver a finished duct with substantially reduced chances of leakage in the corners of the duct’s transverse joint. Not only does the reduced chances for leakage create a more desirable duct, but it also reduces the amount of post-production sealing that’s necessary. In most cases, a full-engagement longitudinal seam substantially reduces the chances of leakage in the corners of the duct’s transverse joint by up to 25%.

Want to learn more about the QuickStitch 2.0 and other solutions from Lockformer that can boost productivity and profitability in your shop? Register today for a 1-on-1 consultation with one of our technical experts today!