Product Overview
This manual provides instructions for the Groz-Beckert LWX6T Curved Blindstitch Machine Needles, specifically for Size 14 (Metrix Size 90). These needles are designed for use with Consew 75T Portable Blindstitch Sewing Machines.
The LWX6T needle system is also compatible with other needle system numbers including LWX2T, 29-20, 29-34, 29-35, 29-49, 29-BL, 2140TP, and SY7395. This pack contains 10 needles.
- Needle System: LWX6T (Curved Blindstitch Machine Needle)
- Compatibility: Consew model 75T blindstitch (blind hem) machine
- Shank Diameter: 2.5mm
- Quantity: Pack of 10 needles

Image: A pack of Groz-Beckert LWX6T blindstitch machine needles, clearly showing the packaging and the needles themselves. The packaging indicates the brand and needle type.
Setup
- Verify Compatibility: Ensure your sewing machine is a Consew 75T blindstitch machine or another machine compatible with LWX6T, LWX2T, 29-20, 29-34, 29-35, 29-49, 29-BL, 2140TP, or SY7395 needle systems.
- Select Correct Size: Confirm that Size 14 (Metrix Size 90) is appropriate for your fabric and thread type. Different fabric weights may require different needle sizes.
- Power Off Machine: Always turn off and unplug your sewing machine before changing needles to prevent accidental injury.
- Remove Old Needle: Loosen the needle clamp screw and carefully remove the old needle. Dispose of used needles safely.
- Insert New Needle: Insert the new Groz-Beckert LWX6T needle into the needle clamp with the flat side of the needle shank facing the correct direction (typically away from the user or towards the back of the machine, refer to your machine's manual for specific orientation). Push the needle up as far as it will go.
- Tighten Needle Clamp: Securely tighten the needle clamp screw to hold the needle firmly in place. Do not overtighten.
- Test Needle: Manually turn the handwheel to ensure the needle moves freely and does not strike any part of the machine.
Operating Instructions
Proper operation of blindstitch machine needles contributes to stitch quality and needle longevity.
- Fabric and Thread Matching: Always match the needle size to the fabric weight and thread thickness. Using a needle that is too large can damage delicate fabrics, while a needle that is too small can lead to skipped stitches or needle breakage.
- Needle Condition: Before each use, inspect the needle for any signs of bending, burrs, or a dull point. A damaged needle can snag fabric, cause skipped stitches, or break.
- Proper Threading: Ensure the machine is threaded correctly according to your Consew 75T machine's manual. Incorrect threading can put undue stress on the needle.
- Smooth Operation: Avoid forcing fabric through the machine. Allow the feed dogs to move the fabric naturally. Excessive force can bend or break needles.
Maintenance
Regular maintenance of your sewing machine needles ensures optimal performance and extends their lifespan.
- Regular Replacement: Needles should be replaced regularly, typically after 8-10 hours of sewing time, or at the start of a new project. Needles dull over time, even if they don't break.
- Inspection: Periodically inspect needles for damage. Run your fingertip over the needle point to check for burrs or dullness. A burr can feel like a tiny hook.
- Cleaning: Keep needles clean and free of lint and adhesive residue, which can accumulate during sewing.
- Storage: Store new and unused needles in their original packaging or a dedicated needle case to protect them from damage and prevent loss. Keep them in a dry environment to prevent rust.
- Disposal: Dispose of old or broken needles safely in a sharps container or by wrapping them securely before discarding to prevent injury.
Troubleshooting
Addressing common issues related to sewing machine needles can improve your sewing experience.
- Skipped Stitches:
- Cause: Dull, bent, or incorrect needle size; improper threading; incorrect tension.
- Solution: Replace the needle, re-thread the machine, adjust tension settings, ensure the correct needle size for the fabric.
- Thread Breakage:
- Cause: Damaged needle (burr or sharp edge), incorrect needle size, poor quality thread, incorrect tension, improper threading.
- Solution: Replace the needle, use appropriate thread, check tension, re-thread the machine.
- Needle Breakage:
- Cause: Bent needle, hitting a pin or zipper, pulling fabric while sewing, incorrect needle size for thick fabric, needle not fully inserted.
- Solution: Replace the needle, avoid pulling fabric, ensure needle is fully inserted and clamp is tight, use correct needle size for fabric.
- Fabric Snagging/Damage:
- Cause: Dull or burred needle point, incorrect needle type for fabric.
- Solution: Replace the needle, ensure the needle point is smooth, use a needle type suitable for the fabric (e.g., ballpoint for knits, sharp for wovens).
Specifications
| Brand | Groz-Beckert |
| Needle System | LWX6T (Curved Blindstitch Machine Needle) |
| Model Number | LWX6T-Size 14 (Metrix Size 90) |
| Singer Size | 14 |
| Metric Size | 90 |
| Compatible Devices | Consew 75T Blindstitch Sewing Machine |
| Shank Diameter | 2.5mm |
| Point Type | Curved Blindstitch Point |
| Item Weight | 2 ounces (for the pack) |
| Package Dimensions | 2 x 1 x 0.4 inches |
| UPC | 747465132647 |
Warranty and Support
Specific warranty information for Groz-Beckert LWX6T needles is typically provided by the retailer or manufacturer at the time of purchase. As these are consumable items, warranties generally cover manufacturing defects rather than wear and tear from normal use.
For product support, questions regarding compatibility, or to report a manufacturing defect, please contact your original point of purchase or the official Groz-Beckert distributor in your region. Retain your purchase receipt for any warranty claims.