Source-backed model reference · US

Baby Lock Zest / BL15B needle size

The exact machine name and needle system determine fit. This page transcribes the cited manufacturer manual and keeps fabric use, insertion and specialty-needle notes together.

Fabric and size chart

• Lightweight fabrics → 65/9–75/11
• Medium fabrics → 75/11–90/14
• Heavy fabrics → 90/14–100/16

Insert and replace

With the flat side of the needle toward the rear, insert the needle fully, then tighten the needle clamp screw.

Other manual notes

• The official fabric, thread and needle chart also lists blue-tip/ball-point guidance for stretch, fine and synthetic fabrics.

Manufacturer source

Baby Lock Zest Instruction Manual ↗

Source market: US (Baby Lock official machine manual); English + French · Checked October 23, 2026. Verify the full model label, fabric and current manual before sewing.

Check another machine · Needle size chart