Sometimes you can use more than one strand of yarn together and that can make your hat bigger. If there is a gauge with the pattern, try making it with the hook you have and more than one strand of yarn held together.

I hope that helps!

I’d try quite a number of hat patterns. But the results actually dissappointed me….they turned to be too small. My problem is now the largest hook I have is 3.5mm and most of the patterns use larger size hook. What can I do? Can I change sc to hdc or dc in order to make a bigger size hat or any opinion?

Honestly you can use any sized hook for any sized yarn or thread. But of course each hook size will give it a slightly different look, making your stitches tighter or looser. Most yarn packages can will tell you the recommend hook to use with that yarn. If you are using a crochet pattern, it should tell you what hook and yarn size to use as well. A good rule of thumb is to create a little square using the yarn you want with a certain crochet hook and see if it turns out the way you want it. If not, them choose and different hook and test that

I’ll try and post a chart for the recommended hook size to use with different types of yarn!