Can you do a decorative stitch of any sort using the double needle? At least a zig-zag? My manual only covers the basics of how to thread for a double.

Yes the backside is a zig-zag. I only tried mine once and it took a lot to get my tension back to normal after I changed back to a single needle. Im sure that was just due to my inexperience. I love the way double seams look.

I have twin needles. Never think about them. I will have to try some of these things.

My machine dealer gave me a lesson on them one day...it is amazingly cool the different effects you can get with them. Using different color thread just adds to the "bling" effect! Play with them- they are loads of fun.

I also use them to hem up DH's sweats...them make it look just like the Original.

Also check out the Triple Needle from Schmetz! You can run 3 threads instead of 2 for some really neat designs!

If you are going to use a twin needle for decorative stitches, turn your fly wheel by hand one full design just to make sure that both needles will go thru the hole in the face plate. Some older machines will only allow straight stitching with a twin needle. I use them often in my embroidery to get that "shadow" effect in my stitching.

I used twin needles for sewing down the bias on a stained glass wall hanging. This was the first time I ever used this type of needle and I broke 3 sets - UGH! After losing $15, I decided to try again and went real slow. I managed to finish the wall hanging but decided I will zig zag my bias down from now on. May not look as pretty, but at least I don't break expensive needles!

I suggest lightweight fabric, which will be easier for the middle of the pintuck to raise up a little bit.

The other method for pintucks is to fold the fabric and sew near the fold.

Usually, several pintucks are done fairly close together, often in symmetrical groups on each side of a garment or item.

I use twin needles to do all kinds of decorative stitches. I have several books called..Sewartfully Yours. The book shows you how to use all the decorative stitches on your machine in combinations for cute edgings. It is a lot of fun to experiment. I am hoping to get a quilt top done that I have embroidered on my machine..then sew it together with the decorative stitching. So much to do and so little time.
Peace and Blessings,

If you are breaking them, one suggestion is that when you have the needle down and try to pivot your fabric in a turn, remember you can't do that because there are 2 needles side by side and you can't pivot. I had students think they could pivot and broke needles. Also stitch slower. You can't be in a hurry.