sewing machine help - bottom stitch baggy.

[HauntedLittleLunatic]

Hi,

I have an old very heavily used Toyota.

I have over 100m of hemming to do (v long story).

My bottom stitches (which will end up on the right side) are looking very baggy. I mean the actual bobbin thread on the underside and not the top thread loops that come down, although they are perhaps a little visible on the underside.

I have rethreaded my machine a 1000 times with the presser foot up.

I have tried adjusting my bobbin and top thread tensions with little effect.

I stitch on treble thickness offcuts of my fabric and it is ok (not perfect but ok) but as soon as I start hemming the stitches are looking loose again.

Any suggestions?

Have you tried rewinding the bobbin? Also on some machine there is a screw to help adjust the tension where the bobbin sits in other than that I can think of anything except getting a service done on the machine

I've gone through 3 full bobbins :(

And my top thread keeps snapping which I guess suggests my top tension is too high

Are you using the correct sort of needles for cloth ??

ie: ball point needles for jersey/stretch cloth,

sharps for woven fabrics

other than that, double check ALL of the machine is correctly threaded up - the slightest thing out of place can cause problems like this

HTH

PS - if your needle is damaged/blunt, it can also cause this sort of problems too

change your needle. Seriously, this is the cause of SO many problems. It might be bent.

Re-thread your machine.

Make sure your bobbin is in the right way.

Id do these three before you start messing with tension dials.

also, take the thread spool off the machine - I find that when the thread snaps, it can coil under the thread, causing major tension issues

look here also