My essential supplies for basting are hand quilting thread, (It is nice and thick and easier to pull out.) a larger size hand sewing needle, and my Sewline glue pen.
To begin with, it is not necessary to cut an exact 1/4" seam allowance all the way around. You can baste with excess fabric if you like.
Here are a couple of examples of what my fabric pieces look like along with their matching templates
(Update--I've started cutting the edges and points off. I don't like the excess):
I use my glue pen to glue the template to the fabric.
A small circle in the middle is all that it takes.
Some pin right through the middle instead, but this is so much easier!
The sewline is the only glue that I recommend. I actually tried some others just for this post.
I tried my favorite Elmers glue and a very popular, more expensive applique glue.
I didn't like either. They were too 'wet' and runny. They soaked right through the fabric.
And they don't allow the finished shape to just 'pop' off when you are finished.
After you have glued the middle (or pinned) it is time to start basting it.
The method I prefer is basting from the RIGHT side. You actually sew right through all three layers---front, paper template, and back.
I have one more basting method for you.
Are you ready---grab your Sewline glue--and glue baste it!
Yep, just glue it down on all sides!
If I could bring myself to, I would glue baste all the pieces.
But ONLY with Sewline. I tried that name brand applique glue that I showed you up above.
NO. Wet, sticky, yuck.
Do you realize how much glue that would have taken to glue baste all 288 diamonds that I just finished?
Oh my! No, I don't think I'd better do that.
But for a quick Hexagon flower here and there---glue basting is the perfect method.