Finally it’s time to start the decreases on the raglan sleeves for the imaginary baby sweater. A short recap. I increased from 34 stitches to 40 stitches (widest part of sleeve in schematic below) over 6.5″ (16.5) cm or 48 rows only 24 of which were RS rows and can be used as increase rows.
Now I need to decrease 40 sts to 6 sts over 4″ (10) cm or 30 rows of which only half, 15, are RS rows. All these numbers are now etched in granite, so to speak, because my imaginary sweater front and back have been completed, at least in my mind. The first thing I naturally want to do is panic. I can’t get 40 sts to 6 sts in 15 rows. Deep breaths, make a cup of tea.
Next grab a pencil, calculator and paper. It’s time for Knitting Math. The first problem I need to solve to calm my brain is make a dent in that number 40. The panicky little voice in my head keeps circling around the fact that 40 is so much larger than the 15 rows I have available for decreases. To ease it, I am going to take the 6 sts that will be left after all the decreases are done and subtract them from the 40. I now have 34 sts. The panic in the little voice goes down a notch.
The next number I need to subtract from that group of 34 sts is the number of stitches I originally bound off at the same point on the sweater body. My initial bind offs were two sts each side. 2 + 2 = 4. So 34 – 4 = 30. The panicky little voice disappears. 30 and 15 are numbers that play nicely together.
In order to evenly space the decreases along these rows I divide the number of RS rows available for decreases by the number of decreases. To find the number of decreases I need to divided the 30 sts by 2. Why 2? Because I am going to decrease 1 st at each end of the needle, which means each RS row I’ll be offing 2 sts. So 30 divided by 2 = 15.
To find the rate of evenly spaced decreases I divide the 15 RS rows by the 15 decreases and I get 1. That means I will decrease 1 st each end of needle every RS row 1 until 6 sts remain.
The knitting math I used to figure out the numbers on the baby sweater is the same math I would use on an adult sweater. Increases and decreases and the math that goes with them is the same whether it is for a wee one or an adult.
Here’s a tip I find helpful when making sweaters for a specific individual. Once I get the correct sizing I make a general schematic and plug in the numbers for the widths and lengths of the body and sleeves. I then file it. The next time I make a sweater for that individual, whether creating it from scratch or from a pattern I take out the file. Then all I need do is figure how many stitches and how many rows to get the widths and lengths I want. Once I know the math, I can adapt any pattern I want and so can you.
I hope this information helps. Have a good weekend.