Thanks, so much, for this link. I was amazed to find the videos that go along with Elanor's books. Since I am more of a visual person, than one who likes to read directions, this was a great find for me.

I guess that I was just lucky. I made a largish tote bag.I did all my piecing by hand.I pinned well and hand sewed.I never did any clipping and had no puckers. As I said I guess that I was very lucky. Knitpick

There is a tutorial showing how to do the apple core. Very easy and very easy to follow. It's from Mo. quilting co. on U Tube. They have some very interesting quilting tutorials on there. Check it out as they just put the apple core one on this week.
Hope it helps you.
BusyGranny

I have not make an apple core quilt, however I have made a drunkers path. You should not need to clip any seams. You really don't want to clip because it will weaken your seams. Yes this is a quilt that is better done by hand, however it will come out well with a few things. I woudl suggest that you use sizing or starch (I use sizing, it is available in the market). Spray your fabric until wet and let dry until almost dry and iron dry. If you are doing this by hand, get a piece of fine grain sand paper and draw around your pattern with a pencil. I use macanical. Trim your fabric to a 1/4 seam allowance, but it doesn't have to be perfect. Place a pin in the corner and then thru the corner of the piece you are joining. Match center and other corner. Continue putting pin thru your seam line and match with seam line or ajoining piece. Check to see that you are sewing on the line. If you are doing this by machine, you still have to pin unless you have a Curve Master presser foot. It really is cool. You also have to start and stop at each corner like you would in a Y seam. Also a lot of seam will help when you are done.

go to Missouri Star Quilt Co and look at the tutorial and new ruler for doing this. She's great with the instructions!It's really easy to follow and comes out great. I'm getting ready to do one for a new baby.

Any of these curves has the potential to stretch if you are not careful. Convex curves do not have to be clipped so much as the concave ones. There are some nifty video clips on You Tube and also on the Quilt Show that show some fool proof methods of temporarily gluing the pieces together and then sewing. I recommend you watch those tutorials. You could also try to place your pattern so that the convex curve was mostly on the warp grain of the fabric in order to eliminate stretch, but anything cut on the bias will be stretchy. Even the weft of the fabric is more stretchy than the warp. All the best with the next project.
P.S. I have a sewing foot called 'the curve master' which is ideal for sewing curved seams. There is a video on You Tube about it as well.

Missouri Star Quilt Company on You tube has a video by Jenny that shows you how to use it. Check it out.:)

YouTube - Tube Tutorial - How to Quilthttp://missouriquiltco.com - Jenny from Missouri Star Quilt Company demonstrates the magic ... 2:40 + Added to queue The Apple Core Template by MissouriQuiltCo 2,644 views
www.youtube.com/watch?

Easy to forget...but have to clip ALL curves for them to "flex" (inward/outward, still need to flex) and become completely flat. Of course...nice pressing finishes the task. Hope this helps. Blessings!

If you happen to have the Accuquilt GO! cutter, they have a die that will cut your apple core to the exact size you need. I have the die but haven't played with it yet because I have 3 baby quilts to finish first. If you don't have the Accuquilt GO! cutter it sure is something to look into. Hope you find your answer.

I gave up and threw my apple core aside. Thought someday I'll learn more about this and dig it out. Looks like it's time to start digging. I'm glad you ask about the problem you're having.
Hopefully you can get going again on your apple core project.