These Coasters were made  using Premier Home 85% cotton, 15% polyester size 4 yarn.   Crochet hooks size G, H, and I, in the first, second and third columns respectively.  Each coaster’s diameter was measured once before washing and once after washing producing two measurements for each hook size.  The average diameter gotten for each hook  before washing was:

• G  –  3.34 inches
• H  –  3.47 inches
• I  –   3.84 inches

And after washing was:

• G  –  3.32 inches
• H  –  3.22 inches
• I  –  3.5 inches

The percent shrinkage in coaster diameter for each hook was:

• G  –  0.6%
• H  –  7.20%
• I  –  8.8 %

Conclusions

1. The larger the hook, the greater the diameter shrinkage.
2. Hook I, after shrinkage had the same diameter as hook G before shrinkage.