Yes, I do use steam but I don't recommend that for everyone, you must use it carefully or it can mishape your blocks.

What a great tute, thanks a bunch. I will try harder to improve my locking seams, but I still pin, pin, pin!

Wow, that was great

in this first picture of the twosies for pinwheels, it looks like there's no seam allowance where the points will come together.

two pictures down, where i see them again, seam allowances are shown.

is that supposed to be that way? i always leave a seam allowance whenever i put points together, but maybe there's an easier way.

have i made a mistake?

In the first picture it is just how you should layout your HST's, they are not sewn yet, in the following pictures they are sewn.

i was looking at picture #4. where the twosies will come together in the center, won't they lose the points? two pictures down, there are seam allowances that will let them come together without losing the points. is that the way it belongs? it looks different.

Great tut! :)

In picture 4 the HST's are not sewn together, once sewn together the picture looks different. Is this what you mean?

if you look at #4, the HST points come all the way to the center edge.

in #6, there is a seam allowance shown. the seam allowance lets you bring the top row and the bottom row together without losing the points. at least, that's how i do it.

on the #4 one, where there is no seam allowance shown, won't you lose the points when you bring the top row and the bottom row together?

this is #4

this is #6. see the seam allowance. when you put this together, you keep the points.