I have the wool needed to knit a childs sweater in 8 ply with an intarsia pattern on the front of Lightning Macqueen. However I am having trouble finding a basic pattern - drop sleeves, soft roll neckline - to use so I can count rows and position the pattern where needed. I found just the pattern I needed and was ready to start when I realised the pattern was written for 10 ply yarn. Can I convert the pattern to suit an 8 ply yarn or is it too difficult and not worth the trouble?
Knit a swatch with that yarn and find out what size needles you need to make your wool match the gauge for which the pattern calls. You adjust the size of your needles to match the end size of the swatch and you'll do just fine,. You may need to knit several swatches with different needles to discover which size you will need, but it will work out if you get the gauge correct.
flyty1n is right. You will need to swatch and measure your gauge.
Knit a swatch to the fabric drape you like - find out how many stitches per one inch.
Now, read the pattern, and see how many inches wide the back is - let's say, it is to be made 18 inches wide - now, multiply your number per inch by 18. Cast on that many - when you get to however many inches to start the arm hole, start it. You will find that the difference in row gauge won't matter that much to the shaping of the arm hole, as long as you knit for however many inches they tell you. Front - same thing - when you get to where you want to put the picture - put in the picture.
So many US patterns are written for 10-ply (worsted) yarn. I usually use 8-ply (DK) and knit these patterns using needles a size or two larger than the pattern states. No problems so far, and I NEVER swatch! It was so nice to meet you at the KP get- together this morning. Regards, Althea