Rod and Sharon, I'm on my 2nd box of Neb plastic sided bobbins and have had very good luck. I don't seem to have to adjust the tension after each bobbin change....saves time. Mike Rod or Sharon wrote: >I monitor another embroidery list (different machine) and wanted to share >with you a post--we use Neb >bobbins (plastic sided) and love them. Just wanted any input from the rest >of the group >on the comment below: >Sharon > >Recently I did a test on 3 different types of Bobbins on a new 6hd M-Series >machine. The three Bobbins were Magnetic, Coates Trusew Poly (132 yards), >and >some Plastic Sided bobbins. First thing I would like to state is that >tension >has a lot to do with how your bobbins run. What I did notice is that with >the >plastic sided bobbins your tension has to be pretty close to perfect, there >is >little room for the tensions to be off. I did notice there were definitely >more >thread breaks with the plastic sided bobbins as well. The Coates and >Magnetic >Bobbins ran a lot smoother and the consistency was very close with maybe a >little advantage for the Magnetic but not a noticeable difference. > >This is what got me. Out of all the runs I did the plastic bobbins >(30-35,000 >stitches) ran out first and then the magnetic bobbins (50-55,000 stitches) >and >then the Coates (55-60,000 stitches). Even though the Coates had less yards >(3 >yards per bobbin to be exact) of bobbin than the magnetic bobbins, they >still >lasted longer (I even had a Coates bobbin last over 62,000 stitches). This >was >the same on all the runs I did while switching the bobbins to different >heads >for each run. Of course I was able to run all 3 types of bobbins to the core >because of the bobbin sensors however, on the plastic sided bobbins I did >see >some inconsistencies on some but no all in the winding of the bobbin when it >got lower into the bobbin. > >My conclusion, Coates 132 yard bobbins seem to work the best for the money. >Even though the magnetic bobbins ran just as good, they did not last as long >and only come 100 to a box (with no sides so the do unravel some) as opposed >to >144 in a box you get from Coates. So I figure by using the Coates 132 yard >bobbins you will get roughly about 2,920,000 more stitches per box over the >magnetic bobbins (100 x 5000 plus 44 x 55,000) which appears to be the >best >bang for your buck.... > > > > > > > > >