Re: [amayausers] Re: bobbin thread sliding to the left.Say Roland, You've got that right! This really is a sophisticated science. And it's amazing how many of us make it through our first year of business knowing only squat. (I'm referring to myself, of course.) Oh, and great analogy - the chain link fence. Okay if I use it? I love analogies. And as for the dandruff. I heard Selson Blue works well. Ed -----Original Message----- From: amayausers-bounce@xxxxxxxxxxxxx [mailto:amayausers-bounce@xxxxxxxxxxxxx]On Behalf Of Roland R. Irish III Sent: Monday, December 12, 2005 7:42 AM To: amayausers@xxxxxxxxxxxxx Subject: [amayausers] Re: bobbin thread sliding to the left. Iris, what brand and what type of fabric is the shirt? I find the lighter the shirt weight ( 7 oz. vs. 9 or 11 oz.), pique vs. jerzee, etc. makes a big difference. The coarser the weave of the material means your embroidery thread is going to be sewing a fine thread on a rough surface. Quick analogy-visualize trying to sew a design on a playground metal mesh fence...outlining the team name with a spool of kite thread on those 2" wide openings-compared to using 1" thick rope...the thinner the thread and the larger the opening-the harder it is to hold a 'straight' edge and you will then see the thread pulling the bobbin up from behind. It's impossible to match thread to material...adding more or different backing and also solvy on top might solve your dilemma. Until we started playing around with samples of the same design on the same shirt but using different backings we really didn't understand why we couldn't just use 'one standard' backing. On pique knits we automatically reach for the solvy-that really took care of the 'jagged' edge (which I think you are calling dandruff?) And sometimes using the 'wrong' needle- ball instead of sharp or viceversa works! It's a fine line to dance-balancing backing material and thickness, adding solvy, pull comp, and material thickness along with bobbin tension. And then you think you have it running right and the next shirt in the pile is made at a different mill and the material isn't the same....wahhhhhhh....LOL Roland Hello All, Here are the results of my test regarding the bobbin thread one sided and hence causing dandruff on the top. Test 1: Started off with a new bobbin case, bobbin spool(NEB plastic sided white), woven shirt, 1 cutaway sewn on royal colored cloth. No difference. I was able to see the dandruff consistently on the top. This was lettering of 0.5² letter ht. 120% column width, monotype corsiva, 100% column width. Tension of the bobbin was normal with the drop . Test 2: I then copied a part of the digitized design (sewn before without problems). Same results with the bobbin thread showing on the top. Tension normal. Test 3: I ran the same digitized design with a tighter bobbin. It caused a thread break and I increased the MT from 3 to 4. Sew without thread breaks for the rest. Not as much dandruff, but the bobbin thread was one sided. I really do not care how wide the bobbin shows on the bottom, but do care when it shows on the top consistently even if it is a few places. I can look at it and say that something is not right. I know for sure that my machine needs a checkup to fix this problem.