Do you use half filled bobbins for the top thread?
 

I use up my half filled bobbins when piecing using them as the top thread especially when I need a color thread for a small project. Sometimes the bobbin gets a little wonky as it spins but I found a neat gadget that stops that. It's not necessary but it works great.
https://www.youtube.com/watch?v=rxHeopZK6dg

This is soooo good! Thanks for tip!

If you get the Quilty Box one was included in one of the boxes last year. Many had no idea what they were for. I think you can get one that holds the bigger bobbins from a LA too.

I often use up the half filled bobbins this way. I've never really had a problem with them getting wonky.

I think it depends on the threading sequence. My Bernina will unspool the bobbin and cause some loops to go under the bobbin. My Brother it has to be on the horizontal spool pin. My FW doesn't like the bobbin on the spool pin. The Bobbinator is not necessary but works on all machines.

I do, and use a small black rubber washer (I took from DH's work bench. Holds just fine!!

I recently got one wonky due to the thread not being in right. I like this find!!

I use them in the bobbin when piecing, why do you use them for top thread?

my wonky bobbin can't be used in the bobbin area so i want to use the thread on it other than a bit of hand sewing i may do once in awhile. i can't find it online other than with prefilled bobbins that come with it. i have never used pre filled ones on my machine. anywhere i can just get the bobbinator??

Yes, I do. It makes so much sense to do it. Cool tool!