Hearts and Apron Strings
 

Does anyone know the size of the Churn Dash block in this pattern,? missing the page for this. Pattern by Sharon Schamber

Have you tried Sharon’s website? Ask there or maybe where you bought the pattern?
Purple Daisy’s quilting is her shop and I think she has tutorials too, should be able to get the help you need directly from her

I have those old Quilter's Newsletters, except one, with that pattern in them. I got them on Ebay.
Anyway, the churn dash block is in the 3rd installment. There is a diagram of the units for the block
and the caption says "7 1/8" Churn Dash Block Piecing". But I think 7 1/8" is the finished size.
The plain center square for the block is cut at 2 7/8". So all the little units have to measure 2 7/8" before
piecing together to make the block. When the block is pieced it should measure 7 5/8" before sewing
in the quilt.
Probably too much info, but hope this helps.
PS-I posted this info on your other query also.