Brother PS3734T 4 Thread Serger

The Brother PS3734T 4 Thread Serger delivers professional finishing for seams, edges, and decorative projects. This versatile serger handles 2, 3, and 4 thread configurations, making it ideal for garment construction, knit fabrics, and rolled hems. With its color-coded threading system and adjustable differential feed, the PS3734T simplifies serging for sewists ready to expand beyond their conventional sewing machine.

• Free Bonus:  4 Thread pack of serger thread
  • This four-piece starter kit features thread cones in white, pearl grey, hi-taupe, and black
  • 100% polyester serger thread
  • 1,750 yards per spool

Key Features

• 2, 3, and 4 thread serging capability for versatile seam and edge finishing
• Color-coded threading system with easy-to-follow guides for simplified setup
• Adjustable differential feed (0.7 to 2.0 ratio) prevents puckering on lightweight fabrics and stretching on knits
• Free arm design for easy access to cuffs, sleeves, and other tubular items
• Adjustable stitch length (2-4mm) and width (5-7mm) for customized results
• Easy-access lower looper for simplified threading
• Built-in rolled hem feature for professional edge finishing
• Bright LED lighting illuminates the work area
• Snap-on presser feet for quick changes

Specifications

Brother backs this machine with a 25-year chassis casting warranty, 2-year electronic circuit board warranty, and 1-year parts and labor warranty. OSP Machines is an authorized Brother dealer and provides free support for the life of your machine.

Frequently Asked Questions

What is the difference between 2, 3, and 4 thread serging?

4-thread serging creates the strongest seam by using two needle threads and two looper threads, ideal for garment construction. 3-thread serging uses one needle and two loopers for edge finishing and lighter seams. 2-thread serging uses one needle and one looper for decorative edges and lightweight fabrics. The PS3734T can be configured for all three options.

What is differential feed and why is it important?

Differential feed uses two sets of feed dogs that move at different speeds to prevent fabric distortion. A ratio below 1.0 stretches fabric slightly to prevent puckering on lightweight materials. A ratio above 1.0 eases fabric to prevent stretching on knits and create decorative gathered effects. The PS3734T adjusts from 0.7 to 2.0 for maximum fabric control.

Can I use regular sewing machine needles in this serger?

Yes, the Brother PS3734T uses standard home sewing machine needles with the HAx1 system. This makes needles readily available and easy to replace. Use ballpoint needles for knits, universal needles for wovens, and change needles regularly for best results.

Is this serger difficult to thread?

The PS3734T features a color-coded threading system with guides that correspond to each thread path, making threading more straightforward than non-color-coded models. The lower looper is designed for easy access, which is typically the most challenging thread path on a serger. With the included threading guide and some practice, most users can thread the machine confidently.

Do I still need a regular sewing machine if I have a serger?

Yes, a serger complements but does not replace a conventional sewing machine. Sergers excel at seam finishing, edge work, and knit construction, but they cannot perform tasks like buttonholes, zippers, topstitching, or decorative stitches that require standard machine stitching. Most sewists use both machines in their workflow for professional results.