Amount different classes of bobbins hold, comparatively
#1
Senior Member
Thread Starter
Join Date: Jul 2017
Posts: 786

Does anyone know if this information is available? It seems to me like class 15 look like they hold more, but I've never measured it. Oh! I could weigh empty and full ones, and compare the weight of thread they hold. If no one knows where this info is, I'll try this.
#2
Super Member
Join Date: Nov 2010
Location: Utah
Posts: 1,544

Yes, a 15 class bobbin will hold more than a standard rotary bobbin, featherweight bobbin, 66 class bobbin. But I think a White Rotary will hold more, and a Bernina 7 Series machine will hold 75% more than the 15 class bobbin. M class bobbins hold about the same as a Bernina 7 Series bobbin. Don't have any charts with measurements, but I'm a sewing machine tech, and work with all kinds of bobbins.
Just a reminder...only use the bobbins that were intended for your machine.
Just a reminder...only use the bobbins that were intended for your machine.
#4
Super Member
Join Date: May 2017
Location: Sunny Florida
Posts: 3,806

It depends on if the bobbin is pre-wound or self wound according to this link.
https://www.superiorthreads.com/educ...obbin-capacity
I use pre-wound bobbins all the time for regular piecing. There is a lot of thread on them. Totally worth my time to use these. Yes, I also wind about 5 or 6 bobbins at a time when I feel like it. Lazy stitcher!
https://www.superiorthreads.com/educ...obbin-capacity
I use pre-wound bobbins all the time for regular piecing. There is a lot of thread on them. Totally worth my time to use these. Yes, I also wind about 5 or 6 bobbins at a time when I feel like it. Lazy stitcher!
#5
Power Poster
Join Date: May 2008
Location: MN
Posts: 23,363

Another link to which bobbin to use in which machine is in this thread:
https://www.quiltingboard.com/links-...n-t266129.html
https://www.quiltingboard.com/links-...n-t266129.html
#8

I agree. I have started using the prewound Superior bobbins in my Janome and love them. I have been using the Magna-Glides for my LA.
#9
Super Member
Join Date: May 2011
Location: Pacific NW
Posts: 7,970

I agree, I think the size/weight of the thread is actually a bigger variable than the bobbin itself. I've used Bottom Line (60 wt) for several years and just recently bought a cone of MicroQuilter, which is 100 wt. I wound a bobbin full and it took forever to fill, quite a bit longer than it takes me to wind a bobbin with Bottom Line.
#10
Senior Member
Thread Starter
Join Date: Jul 2017
Posts: 786

Yes, a 15 class bobbin will hold more than a standard rotary bobbin, featherweight bobbin, 66 class bobbin. But I think a White Rotary will hold more, and a Bernina 7 Series machine will hold 75% more than the 15 class bobbin. M class bobbins hold about the same as a Bernina 7 Series bobbin. Don't have any charts with measurements, but I'm a sewing machine tech, and work with all kinds of bobbins.
Just a reminder...only use the bobbins that were intended for your machine.
Just a reminder...only use the bobbins that were intended for your machine.
The reason I was thinking about this is that if one had 2 different machines to use for, say, FMQ, the type of bobbin, and therefore the amount of thread it holds, could be a deciding factor. So, I will try one of my 15 class bobbin machines instead of one that uses the 66 class bobbins. That way, I won't have to run out of bobbin thread as much. Its too bad that new Lydia uses 66's.
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