Explanation
The bobbin thread is wound on a bobbin, which sits in the bobbin case of the embroidery machine.
It locks with the top thread to form each stitch. Balanced interaction between both threads is key to consistent embroidery quality.
Characteristics
- Usually finer and more uniform than the top thread
- Available as pre-wound bobbins or wound by the user
- Often white or black, suitable for use with most designs
Importance
- Bobbin tension is one of the most critical factors for stitch quality
- Visible bobbin thread on top indicates incorrect tension or thread mismatch
Practice
- Industrial machines often use pre-wound bobbins for consistency
- Always check bobbin insertion and threading carefully
- The balance of top and bobbin threads determines the overall embroidery appearance