Coaster performance update

I sent my Dad four reed coasters for Father’s Day. He sent back data on preferences for hot and cold drinks.

Photo description: from left to right, #2 round reed with braided edge, reed and hemp string with braided edge, reed with tucked loop edge, reed and plied hemp string with braided edge

Dad reports that his favorite coasters for hot drinks are ranked left to right, and for cold drinks, right to left. The shades of orange coaster on the right made with several plies of hemp string absorbs the most condensation, so is best for cold drinks with condensation.