Cornerstone Cabin Quilt Block Tutorial

red and white cornerstone log cabin with title.

If you’re following along, we made it to the last block of the Log Cabin Sampler Quilt.  The cornerstone log cabin block isn’t difficult, but it is very important to have accurate cutting and seam allowances to get the right sized finished block because of the number of small pieces.

For the Log Cabin Sampler quilt, you need seven of these blocks.  For the mini sampler, you only need two.  This will give you a chance to finish up your 1-1/2″ scraps.


Dark Fabric:

  • fourteen (four) 1-1/2″ x 7-1/2″
  • fourteen (four) 1-1/2″ x 5-1/2″
  • fourteen (four) 1-1/2″ x 3-1/2″

Medium Fabric:

  • seven (two) 3-1/2″ square
  • eighty-four (twenty-four) 1-1/2″ square

Light Fabric:

  • fourteen (four) 1-1/2″ x 7-1/2″
  • fourteen (four) 1-1/2″ x 5-1/2″
  • fourteen (four) 1-1/2″ x 3-1/2″


This is the layout for the block.  You can see the bars go around the centre square, the same as the other log cabin block, but the medium squares go on the corners.  This adds another step to the assembly.

courthouse 1

Begin by adding the 1-1/2″ blocks to the ends of the bars.  Put blocks on one end of one set of light and one set of dark, but put the last pair onto both ends of the second dark set.  The second light set should have no squares sewn on.

cornerstone cabin

Sew the light 1-1/2 x 3-1/2″ onto the light 3-1/2″ square.


Sew the light 3-1/2″ strips with medium squares onto the medium 3-1/2″ square.  You can see that the medium 1-1/2″ square is on the corner.

cornerstone cabin 4

Sew the dark 3-1/2″ strip with one light square onto the centre 3-1/2″ square.

cornerstone cabin 5

Sew on the dark 3-1/2″ piece with two medium squares.  You can see the four medium squares in the corners.

cornerstone cabin 6

Repeat the same process with the 5-1/2″ squares.


Repeat with the 7-1/2″ strips, ending with the dark strip with two medium squares.

cornerstone cabin 8

There it is!  The finished block should be 9-1/2″ square.  You should have seven (two) of them.


This is almost the end of the Log Cabin Sampler quilt.  All the blocks are done, now it is just assembly, quilting and binding!  If you missed out on any of the other blocks, you can go back to them HERE.


Elizabeth DeCroos - Epida Studio.

Elizabeth DeCroos

Elizabeth DeCroos is the designer and teacher at Epida Studio. She loves to work in quilting, pojagi and embroidery and teach these techniques to others.
Learn more and get her to speak to your group.

Scroll to Top