December 27, 2018

2019 #modernHSTBOM...All the Details! all *all* the details for the 2019 Modern HST Block of the Month sampler quilt! (If you notice any errors or discrepancies, please let me know. I'm human and make mistakes!)


  • To have one or more quilt tops completed in early December than can actually be finished and gifted at Christmas. (Seriously. We say it every year. Let's make it happen!)
  • Learn something new!
  • Support other quilters and get support and encouragement when you need it.
  • Have fun!

How it Works:

  • One modern HST quilt block will be posted on Instagram (@stephjacobsondesigns) and here on my blog on the first of each month from January 2019 through December 2019.
  • The 12 blocks can be easily assembled into a modern HST quilt top. You can have a quilt top completed on December 1, 2019 with plenty of time to finish the quilt and gift it for Christmas.
  • Each half-square triangle unit will be made of of one neutral/background fabric and one color/focus fabric. Each monthly quilt block will use 16 of the HST units, and the completed quilt top of 12 monthly blocks will require 192 of the HST units. You can totally work ahead and make all 192 HST units if you want so you just need to assemble each monthly block when it is posted.

How to Participate:
  • Simply make the HST block posted each month.
  • Share your fabric pulls, completed blocks, progress, and questions on Instagram. Use the hashtag #modernhstbom so I and other participants can find you!
  • Consider sharing this post on Instagram so other quilters can join in the fun.
  • Consider following me (@stephjacobsondesigns) on Instagram so you can see my progress and tips and tricks for sewing HSTs.

HST and Quilt Details:
  • If you have an AccuQuilt die-cutting system, I highly recommend using it to make your half-square triangles! The chart below lists various HST sizes, the die(s) needed and the resulting block and finished quilt size you will get. (I will be making two sizes of quilts. One will use the 4-inch finished die and the other will use the 6-inch finished die.)
Choosing Fabric:
  • To make these blocks pop, you will need two types of fabric: a neutral/light fabric and a darker/print/colored fabric. As long as you have a fair amount of contrast between your two fabrics, almost anything will work!
  • For my quilts, I'm making a two-color quilt in solid fabric and a scrappy quilt using my Island Batik scraps paired with some neutrals.

Yardage Requirements:
  • The amount of fabric needed will depend on the size of quilt you decide to make.
  • Once you decide on your quilt size, I highly recommend using a yardage calculator to figure out how much fabric you need. I use this calculator at Quilter's Paradise.
  • For my black and white quilt I am using the 6.5-inch AccuQuilt die and will need approximately 7.5-inch squares (96 squares of black and 96 squares of white) to cover the area on the die board. Using the yardage calculator, I will need 4.25 yards each of black and white. That's a lot of fabric, but I'll end up with a nice, big quilt!

I know that's a lot of information, and I've probably raised more questions than I've answered. If you need help or have questions, feel free to ask in the comments (just make sure you aren't a no-reply blogger) or DM me on Instagram!


  1. I am confused. I do not have the "die". How do I figure out the number of squares?

    1. Hi, Mel! You will need a total of 192 squares to make your HST blocks. 96 squares will be your background fabric and 96 squares will be your focus fabric. The size of squares you need to cut will depend on what size HST blocks you want to make.

  2. At the top of the newsletter it says we need 192 half square blocks. Cheers Miep

  3. I love the fact that the h s t can be made all at once then monthly we can assemble one block. That is modern to say the least!

  4. I live in MN can I still participate? I noticed it is Omaha modern quilt guild.

  5. What a fun project! I love that I can cut all the HSTs ahead of time!

  6. I love the fact that we are getting even more use from our wonderful Accuquilt dies! Thanks so much!