How To Spray Block Crochet or Knit Squares
I've fielded lots of questions about blocking recently, and I thought a wee tutorial might be in order. So I spent this afternoon up in the mountains recovering from the last few months, and in so doing I blocked some squares. Here's the long and short of it; click any photo for more information, or check out the full photo tutorial on Flickr (there are about twice as many photos there*).
Blocking is the process of setting your fiber pieces with some form of water. You can spray block (demonstrated here), wet block (using a similar technique but starting by submerging your pieces in water until they're saturated), or steam block (using a steamer or a steam iron after you pin the dry pieces). Blocking almost always works magic on natural fibers and blends. Results are less predictable with synthetics. There are several benefits to blocking:
- Blocking sets the shape of your pieces (e.g., you can even out edges or help correct unwanted curling).
- Blocking relaxes and evens out your stitches.
- Blocking can dramatically improve the drape of your fabric.
- You can slightly adjust the finished size of your fabric by blocking it. (You can block it to be bigger, but not to be smaller.)
Gather the following before you begin:
- Completed pieces of crochet or knitting
- A flat surface (like a blocking board [used here], bed, carpet, or stack of towels)
- Rustproof pins
- Spray bottle filled with tepid water
1. Note the finished dimensions of the squares (if you're blocking a garment, use the measurements in the schematic drawing as a guide; from here on I'm only going to refer to squares). In this example I'm blocking both standard 7-round granny squares (pictured on the right) and several different-size squares for my Babette Blanket. The standard grannies need to be 7.5" square, and the largest-to-smallest Babette squares need to be 15", 5", and 2.5" square, respectively.
2. Leaving breathing room between them, lay your squares out on a flat surface. In this example I'm using a blocking board**, which is already (after this one use) my new best friend (sorry, Emma). You could also use a mattress (I would remove blankets first), a clean carpet, or a stack of towels. The bonus of using a blocking board is the super handy grid printed on the fabric lining (also, the lining wicks moisture to speed drying). You could make yourself a blocking board using foam board and fabric, too.

[Bonus photos of Babette squares laid out, and of the tremendous capacity of the blocking board.]
3. Grab some pins (but not really; you'd stick yourself). Pin the first corner of the square; any corner will do. If you're using a grid, make sure to position the square on the grid so that it's easy to measure in both directions so you can determine where to pin the other corners.
4. Pin the corner diagonally opposed to the first corner. Continue to pin the remaining two corners. Measure to make sure the pins are equidistant from each other along the edges. In this example, each edge is now 7.5" across. I had to stretch the edges slightly to achieve this.
5. Notice in the previous photo that pinning the corners caused the edges to curve. Correct this by pinning the center of each edge to the proper dimension. Continue pinning until the edges are flat and square.
6. Spray the pieces evenly and thoroughly with tepid water. (This is why you should use rustproof pins.)
7. Leave the pieces pinned until they're completely dry. Depending on your climate and the time of day, you might have to leave them overnight. Here are the Babette squares just after spraying:
8. Once dry, remove the pins and enjoy your work. (Photos of dried squares to come tomorrow, when these squares are dry.)
* There are 19 photos in the Flickr set. I took 173 during the shoot.
** I got my board at Three Bags Full in Vancouver, BC. Lots of local yarn stores carry them, as do some online stores.
[X-posted @ Granny-Along]
Technorati Tags: crochet, granny squares, tutorial
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Ok, so this is a really late comment/question ---from an impatient person with limited grid space to block and a lot of squares to block.....is there any way to speed this up with acrylic fibers? I was considering using a blow dryer on cool? Is there something magical about letting it dry naturally, or could you use the cool button on your blow dryer?? Curious. Thanks in advance!!
Where did you get your blocking board??????????? Thanks for all of the helpful advice.
I would dump me for a blocking board too. Which, I might add, looks huge and amazing!!
I am a relatively amateur crocheter (from Vancouver, I might add!) and I recently crocheted a blanket for my friends' baby. The center of the blanket is one big square of single-crochet stitch, and then I did a somewhat elaborate border with double-crochet and popcorn stitching. Even though there are the same amount of stitches, the border wrinkles. I am hoping that blocking might help, but I'm not sure it will. Do you have any ideas? (I've also never blocked before, so I'm not sure which method, if any, would be best)
thanks a million!
Hi Ariella -- Several factors can make your edges ruffle. The gist, though, is that there's too much fabric on the border as compared to the edges of the centre. Here are things you might want to check out:
* It's possible that you made the double crochets looser than the single crochets, so even though you have the same number of stitches, the doubles take up too much space and therefore ruffle. New crocheters often crochet very tightly, so it's even possible that as you progressed making the blanket that your single crochets loosened up a bit, and that by the time you got to the border your stitches were looser enough to cause the ruffling.
* Popcorns also take up a lot of space. It could be that you need to give them more room to breathe by skipping an additional stitch before or after each one.
* It's also possible that the inherent drape of the taller, heavier stitches on the border, as compared to the denser single crochet centre, would require you to work slightly *fewer* stitches for the border than for each side of the centre.
If you do try to block (just don't weave in your ends first, so if it doesn't work you could still rip out the border and rework it), try blocking only the single crochet center to try to stretch it out a bit to match the longer edges of the border.
Good luck!
Kim
Very good tutorial. I'm making squares of crochet for a blanket and I will try your blocking technic
I just completed crocheting a vest out of size 5 100% cotton thread. How would I block this on a board? Wouldn't I need a shirt-form to block the front and back at the same time?
Confused in Texas
You can block it flat the same way I show blocking the squares, unless there is gathered shaping that prevents either the front or back of the vest from laying flat. If it lays flat, though, you can pin the whole thing out to the proper dimensions, spray it, and let it dry. You could block it to a dress form, but cotton has a tendency to drag down from gravity - especially when wet.
Does this work on all kinds of yarn, or is only the all natural fibers? I hope that this isn't a silly a question, but I'm new to crocheting and am just learning about everything and the differences between yarns and stitches and such. :)
Thanks so much for this great tutorial!
Hi Kelly - It works always on natural fibers, and less predictably with synthetics and blends. It's all about the experimentation. :) Have fun!
Been crocheting for some years but finally decided to get around to actually blocking my items. What keeps the project from loosing shape after blocking? I mean, you wash it and won't it return to the shape it ended up when I first finished it?
Hi Kari - You have to reblock items after washing them again. This is often why garment labels instruct you to reshape a sweater and dry it on a flat surface. As for the resilience of the blocked shape after blocking, it depends on the fiber, the tension of the stitches, and the stitch pattern. Cotton blocks beautifully, but due to its inelasticity and its weight, with wear it tends to fall victim to gravity; you have to wash and block it back into shape fairly regularly. Animal fibers, on the other hand, really do retain their blocked shape, relatively speaking. The blocking sets the fibers in place - it's the closest thing to magic in crochet and knitting. But yes, after washing, items do need to be reblocked.
Thank you for your detailed response. I am often hesitant to "move forward" with my crocheting skills because I feel intimidated by certain terms and processes like this. I so appreciate your help!
Thanks for such good explanation of blocking crocheted squares. Well done.