Please see the upgraded versions of this machine, the 654D or the 454D
Sold from 1994 to 2025.
When you want to make the most of your serging time, with professional results, the MyLock 634D is unmatched. It has 2 needles and 2, 3 or 4 thread overlock stitching. Threading is a breeze due to color-coded thread guides and an easy lower looper threading system.
The MyLock 634D also lets you quickly switch to rolled hemming without changing the needle plate.
Features
- 2, 3, or 4 thread overlock
- Lay-in thread tension dial
- Seam width: 1 - 5mm seam length 3.3mm (narrow), 7.5mm (wide) 2.0mm Rolled hem
- Slim foot
- Handy needle threader
- Convenient thread cutter
- Easy rolled hem change-over
- 0.5 - 2.2 differential feed ratio
- Easy upper knife release
- Adjustable cutting width: 3.1 - 5.1mm
- Easy lower looper threading
- Differential feed
- Lower looper pre-tension setting slider
- Changeable thread guide
- Front and back needle guard
- Retractable upper knife
- Numbered tension dials
- Color-coded thread guides
- Snap-on presser feet
* with machine purchase.
- Serger Flat Bed
- Skeleton Body Construction
- Lay-in Tension Dial
- 2, 3, and 4 Thread Convertible
- Maximum Speed: 1,300 spm
- Incorporated Tension Release Device
- Incorporated EZ Change Rolled Hem
- Adjustable Foot Pressure (Adjusting Screw)
- Snap-on Presser Foot
- Feed Adjustment: Dial on Belt Cover (with Window)
- Differential Feed Adjustment: Dial on Belt Cover (with Window)
- Dial Cutting Width Adjustment
- Alined Spool Pin Spool Stand
- Carrying Handle: Part of Machine Body
- Thread Cutter
- Length of Feet: 1 to 5 mm
- Differential Feed Ratio: 0.5 to 2.25
- Cutting Width: 3.1 - 7.3mm
- Waste chip Box
- Accessory Box
- Foot Controller
California Residents: