Yes, you can use heavy thread in your sewing machine, but with specific limitations on the maximum thickness and the need to follow recommended guidelines.
Understanding thread weight is key to knowing what your machine can handle. Thread weight is often indicated by a number followed by "wt" (weight). Counter-intuitively, a lower number signifies a thicker thread, while a higher number indicates a thinner thread.
The Heaviest Limit: 12wt Thread
Based on information from the reference provided:
The heaviest thread you can fit through your machine eye needle is 12wt (remember: the lower the number, the thicker the thread).
This means that while your machine can likely accommodate threads heavier than standard all-purpose thread (often around 40wt or 50wt), the practical limit for fitting it through the needle eye is typically 12wt.
Considerations When Using Heavy Thread
Because threads like 12wt are significantly thicker than standard sewing threads, using them in your machine requires careful consideration to ensure proper stitching and avoid damage. The reference highlights this necessity:
Because the thread is much thicker, we always recommend the following "rules" to follow when sewing with these in your machine.
While the specific rules are not detailed in the reference, the fact that they are strongly recommended underscores the importance of adjusting your machine setup and technique when using heavy thread.
Using thread heavier than 12wt may prevent it from passing through the needle eye or machine tension mechanisms correctly, leading to:
- Skipped stitches
- Thread breaks
- Poor tension
- Potential machine damage
Therefore, while "heavy thread" up to around 12wt is possible, it's not as simple as just swapping out the spool. Always refer to your sewing machine manual and follow any specific recommendations from the thread manufacturer or machine maker when venturing into heavier thread weights.
