I don't own a serger so I couldn't even hazard a guess.

That question about ballpoint needles for longarms was a good puzzler but it took me a long time to remember to look up an answer for you.

Looks like Superior Threads might have the answer on their needles for longarms page.  (Lawsy-mercy, they do have a lot of choices!) You have to scroll down a bit but they have a selection of needles called "light ball".  I suppose if you give them a phone call you would get more information.

https://www.superiorthreads.com/needles/longarm-needles

Nice job with the strips Ellen!

thanks for the link on that.  I just may need it at some point.

Using Terial Magic (or other stiffening spray) on the t-shirts would certainly allow the quilt to be much more supple and pliable than when it is backed with fusible stabilizer (not matter how "lightweight" the stabilizer is).   That idea makes me feel a whole lot better about the resultant quilt.

And the ability to use a ballpoint needle for the quilting will practically eliminate the possibility of poking holes in the t-shirt knit, which will produce runs.

So, thanks again. :-)

Scanning though that vast assortment of longarm needles listed on their site kind of made me feel like I was in the grocery store's breakfast cereal aisle. 

Does the world really need that many choices in longarm needles?  (Rhetorical question do not bother to answer.)

Finally got a chance to watch your linked YouTube video on Terial Magic.   **Wowsers!!**   So many different uses that I certainly had not given a thought to.

Thanks so much for sharing the link!

It could even fix your wimpy fabric for the reverse needle turn...just sayin' 

Whenever I sew knits with my serge I use ballpoint needles.

I guess I should probably get some ball pointed needles .... though.. I did sew a couple of things that are knit with a regular needle on my main machine a couple of months ago...

Hello Everyone!

My Cathedral Windows quilt is finished!  Woohoo!  Very happy to have it done. It will be a charity quilt for Valley Children's Hospital and I will make a similar one for my GD in Michigan for her birthday.  My camera is charging and I will post pictures soon.

Donna and her crazy  kitty helpers, Missy and Racer