You made your sample and its not square. 🙁 Which measurement do I use?
If the difference is minimal use an average of both. For example:
Assuming you have laid 30cm x 30cm accurately.
One side measures 15cm and the other 17cm then use 16cm.
The maths: 15 + 17 = 32. 32 / 2 = 16. This is the average.
If the difference is large there are a couple of questions to ask:
If all else fails remake the sample and try again.
But if you have used an odd number of layers then you need two shrinkage rates, one vertical and one horizontal:
- Make your sample.
- Measure and designate one side vertical (16.5cm) and one side horizontal (15cm).
- Vertical – 30/16.5 = 1.8
- Horizontal – 30/15 = 2
Now apply to your template. I’ll use the bag example from the last post – the finished size is 60cm deep (vertical) and 45cm wide (horizontal).
- Vertical is 60cm x 1.8 = 108cm
- Horizontal is 45cm x 2 = 90cm.
Full until bag is finished size.
Next post recommended shrinkage rates.