We've discussed this before but I thought I'd repeat this again. I have to admit I am fond of Superior's threads because 1. Bob provides lots of info on
threads, needles, etc. 2. they answer emails. 3. overall, Superior's products and prices are very good. Enough with the commercial.
Bob's recommendation for successful sewing with specialty threads (I call them springy threads because they tend to unwind from the spool and retain the coil
shape) is to allow the thread to unwind from a spinning spool straight into the machine rather than to have the thread unwind over the top of a static spool.
The 820/830 thread delivery design does not allow for this set up.
While Superior and other good quality specialty threads do not coil, the overhead telescopic rod system unravels the thread over the top and adds twist as the thread enters the machine and through the tension disks. The Bernina engineers may argue this point, but this is what I observe.
So the solution to this is either 1. to rig up a homemade fix to raise the thread spool/cone up on the spool pin allowing the spool/cone to spin freely, bypass the telescopic rod system and feed the thread directly into the 820/830 or 2. to buy an adapter such as the Wonder Thread Guide (be sure to ask for the
820/830 version). And I am not associated with this company in any way.
But even this solution has a problem.
The spool pin is too short when the spool is elevated to spin freely. I have to use a plastic straw to extend the length of the spool pin. Some adaptation for a $12000 machine! :shock:
Also remember to use a 90/14 topstitch needle (I like titanium), slow down the speed, lower the tension, use the manual method for threading the machine if the
automatic threader will not thread the needle. If you are doing free motion, slow down YOUR speed.
Using these suggestions I have been able to use all sorts of specialty threads, including
el cheapos, that I was never able to use even on my 630!