Provisional cast ons are a fabulous way of deferring decisions, creating symmetry and producing a cast on edge that mirrors a cast off edge if kept permanent. Let me explain a little more before I show you how I do a crochet chain provisional cast on.
One of the frustrations of working a bottom up design, let’s say a sweater, is that a firm decision needs to be made on the cast on edge and the welt before the main body of the sweater is worked. If one has done their sketching and sampling this should not prove to be a problem but for those of us who have a plan but are easily persuaded to “I wonder what would happen if I just did this …..” half way through said plan, it is near on impossible to change the welt (design, length etc) after the main body has been worked. This is where the provisional cast on really comes into its own. If you have an idea of the main part of the sweater but wish to defer a decision on the welt until the end, you can cast on provisionally, work the body upwards and then come back to the cast on edge, release the stitches and work the welt downwards. Brilliant!
Sometimes a stitch pattern needs to be worked in a certain direction to create the desired effect. Where a mirror image of the stitch pattern is required to complete another side the provisional cast on is, once again, your friend. A great example of this is my leaf and lace scarf design. The way to achieve the leaf motif at both ends of the scarf is to cast on provisionally at the centre back neck and work one side of the scarf to the motif. You then return to the provisional cast on, release the stitches, and work the other side of the scarf down to the leaf motif thereby creating a symmetrical design.
A decorative cast on edge
As the provisional cast on I am going to show you is a crochet chain, it can look rather decorative especially where teamed with a cast off (also effectively a crochet chain) and/or when worked in a contrast colour. Of course in these circumstances the cast on is no longer provisional but permanent, however it is worked in the same way. I have just finished designing this hat (pattern to come soon once test knitting is completed) where I have used this effect.
So, now to the knitty gritty:
How to work a provisional cast on
- Using smooth waste yarn and a suitable sized crochet hook start a single crochet chain and work a few repeats (the number is irrelevant here as the cast on has yet to begin). It is really useful if the waste yarn contrasts well with the main yarn as it will make it easier to see when releasing the stitches at the end. Smooth yarns also help prevent snagging, catching and splitting when releasing the chain. I often use a mercerised cotton in a light colour.
- Introduce your knitting needle and begin to work the crochet chains over the top of the needle. It is a bit fiddly at first but once you get a rhythm going and remember to swing the working yarn behind the needle again after each chain is pulled through it becomes easier.
- Continue working the required number of chains over the knitting needle until the correct cast on number has been reached. If the cast on is going to be removed at a later date i.e. it is provisional, then continue for a few crochet chains more without the knitting needle before cutting the yarn and pulling through the final chain. Don’t pull too tightly as this will be undone later.
If the cast on is going to be permanent then obviously it is worked in the correct yarn for the garment. There is no need to work additional stitches at each end of the chain and the last chain loop created is the last cast on stitch and gets slipped onto the knitting needle.
Once all the stitches are in place, knitting can begin using the correct yarn for the garment. When it comes to unravelling the provisional cast on, the tail end of the yarn is slipped back through the last chain and gently pulled. The chain will unravel leaving the first row of garment stitches live, one by one, which need to be carefully placed on to a knitting needle as they appear. Care needs to be taken not to twist the stitches as you put them on to the needle and I suggest counting as you go to ensure you don’t miss any. Once all of the stitches are on the needle, work can commence in the opposite direction.
I hope you found this tutorial helpful. Provisional cast ons are such a useful tool to get the hang of and I use them a lot so I encourage you to get practicing. I have shown you my favourite way of doing this cast on. However, if you don’t get on with this method there are others so please don’t give up as a bit of research will reveal another way which might suit you better.