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Posted by Wayne Hines on October 25, 2008, 5:54 am
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> Your thread tension is incorrect- if there is a mess on the wrong side,
> the issue is almost always the tope thread tension issue- if the top is
> messed up, its the bobbin thread.
> In article
>
> > I have a Janome 300 that sews beautiful for about 20
> > minutes....anything longer, and the thread on the bottom "clumps"
> > up....is this usual? what can I be doing wrong? I know "clumping"
> > isn't the right word either! Any suggestions?
> > 'Carol
Does the problem happen with every design you try or just on one design?
If it's just one particular design that causes this, the problem is
likely something in the design.
Does the problem happen when the hoop is moving in a particular
direction? This could indicate a burr somewhere in the thread path that
snags the thread when the hoop moves in that direction. Check the path
of the upper thread to make sure there are no burrs. This includes the
needle plate, rotary hook and the bobbin case.
Also check to make sure there's nothing except the thread being used
that's getting between the tension disks.
gwh
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> the issue is almost always the tope thread tension issue- if the top is
> messed up, its the bobbin thread.
> In article
>
> > I have a Janome 300 that sews beautiful for about 20
> > minutes....anything longer, and the thread on the bottom "clumps"
> > up....is this usual? what can I be doing wrong? I know "clumping"
> > isn't the right word either! Any suggestions?
> > 'Carol