These snippets were first published in Machine Quilting Unlimited magazine's ask-the-expert column 'Ask Kimmy'. Copyrights held by Kim Brunner and Meander Publishing. All rights reserved.
Blocking A Quilt from the May 2010 issue of Machine Quilting Unlimited magazine
Dear Kimmy-I have a quilt that turned out really nice and I want to enter it in a show. I was told that I should block the quilt first, but I don’t know what that means. How do you block a quilt? What difference does blocking make?
Kimmy says: What a great question! I am glad that you gave me the chance to explain this to you, because properly blocking your quilt will make a huge difference in how it will hang in the show and it will also make a huge difference in how the quilt will score in the judging room. A properly blocked quilt will hang flat, its corners will be square and the entire quilt will have a much crisper, more professional finished appearance. Keep in mind that not only show quilts should be blocked; any quilt that needs to hang straight and flat will benefit tremendously from this process.
Before you get started, you must make absolutely sure that the fabric used in the construction of your quilt is colorfast. If you are in any doubt about this, *do not get the quilt wet!* After all, it doesn’t much matter if the quilt is flat if there is red dye bleeding all over the white setting triangles, right?
You will need an area that is big enough to accommodate your quilt as it dries, and gives you enough to room to move about during the blocking process. Good choices are an out of the way bit of floor space or a large table, such as a ping-pong table. If you have pets, make sure the quilt will not be in an area where the pet will walk on it or disturb it as it dries. Make sure that your space can be blocked off to keep it free from foot traffic. You will also need several fans (I like big floor fans) and some clean sheets and blankets to protect your floor or table from the wet quilt.
Next, evaluate your quilt. Is the whole thing wonky, ripply, and out of square? In that case, it is probably best to wet the entire quilt in a bathtub. Before adding the water, drape a sheet across the tub and lay your quilt on the sheet. This way, when removing the heavy wet quilt from the tub, you can lift it using the sheet and prevent any stress to the quilt’s seams or the delicate quilting stitches. Using the sheet to maneuver the wet quilt, squeeze out as much excess moisture as possible, carry the quilt to the area which you have prepared for it and lay it out on the clean sheets or blankets.
If your quilt is only a little out of whack, with just a bit of fullness that needs to be put in its place, you can skip the bathtub and simply lay the quilt out on the sheets and moisten it using a spray bottle or a small canister sprayer. Regardless of which method you used to wet the quilt, lay the quilt out nice and flat, smoothing out any fullness as you go.
Using a long tape measure, measure diagonally across the quilt to make sure that the distance is the same from corner A to corner C as it is from corner B to corner D. If these numbers are different you will have to either stretch the quilt a bit (not too much, or you’ll pop those wet quilting stitches!), or ease it and ‘squish’ it a bit to make the measurements line up.
Next, use the tape measure to make sure that the sides of the quilt are the same length. (i.e., if it is 90 inches from corner A to corner B on the top edge of the quilt, it should be 90 inches from corner C to corner D on the bottom of the quilt. If these numbers are different, do some more pulling or easing to even things up.)
Look at the interior of the quilt. Are any blocks puffing up? If so, pat them gently into place to flatten them. Next, make sure that the sashing lines and piecing lines are straight and that the seam lines connecting the borders to the quilt’s interior are straight as well. Nothing ruins the look of a quilt more quickly than lines that are supposed to be straight but are not. These lines are crucial to the look of your finished quilt, so take the time to fuss with them.
Now, you'll need a tool that will help you determine if your corners are square. I use a big, square rotary cutting ruler, lining up the edges of the quilt’s corners against the ruler’s long lines to make sure that everything is as straight as possible. Again, if anything is out of line, pull or squish until its all square.
To ensure that my borders are absolutely straight, I use a long string and have a helper hold one end of the string at one corner of the quilt while I hold it taut at the opposite corner. The string is straight, so you can easily see if any of the edges of the quilt extend beyond the edge of the string and need to be eased back in, or if they're pulling in from the string and need to be smoothed back out. Make sure that the edges of the quilt are as straight as possible, because if they're crooked, it will be quite noticeable when the quilt hangs. If there are ruffly areas in the borders, use your hands to gently press and smooth until the border lies flat.
Set the fans to a medium speed to create a gentle, steady breeze. Go get all of your dining room chairs and build a frightfully imposing barricade with them to keep everybody out of the area while the quilt dries. (to add extra dramatic effect to this step, I always make sure that there’s a trash can, a lamp and a globe teetering high atop the chairs so nobody will be tempted to go anywhere near my area for fear of making everything come crashing down). Drying time varies considerably, depending on how wet the quilt is and how much humidity is in the air. In general, if you got the whole quilt wet you should plan on at least 2 days of drying time, possibly more if you live in a very humid climate. It is important to let the quilt dry thoroughly, as moving it while it’s still damp will undo all of your hard work.
Yes, it seems putzy, and yes you will lose some floor space during the drying process, but in the end you will have a beautifully flat and square quilt that will wow the judges and maybe even win you a ribbon!