Arm / swatch

I realy wanted to do something that would knit upp fast after arisaig so I used some heavy yarn and 6mm needles and started on a arm for a lace cardigan.

I should have made a sample! the gauge is realy off 16stiches over pattern should be 4 inches but on the arm 16stiches were 5 inches. What to do? Abandon the project? recalculate the pattern?

I have not decided yet.