Hi Everyone, this is my first post and unfortunately it's about a problem that arose out of nowhere i think. so here it is, as thorough as i can be:
so my problem is I'm getting loose stitches on the underside of whatever i'm sewing *BUT* ONLY when in reverse to backtack ect. My equpiment i'm using is a highlead 618 with a size 18 needle and 69 bonded nylon thread. What's baffling me is that all stitches are nice and tight on top and bottom but as soon as i am at the end of a stitch and want to backtack, the upper thread (black in the photo example) will hang loose on the underside.
so i thought it could have been a tension issue.. but if it was then why does all my forward stitching look OK?
if it was a timing issue, then once again, why only in reverse is it bad? wouldnt timing affect forward and reverse?
i looked over my manual and from what i can tell the timing is ok, but im obviously not a pro.
i cleaned out the bobbin case, needle plate, ect.
so in my image i have 2 layers of canvas. this is the underside. you can see in the top one that i was sewing forward and at the end you can see the black(top thread) coming through to the bottom and not forming the knot in the middle of the piece
the bottom stitch is reverse only, so you can further clearly see whats going on.
sorry for such a long post but anything i can do on my own would be better than transporting it so thanks in advance for any help!
-Dana