The Pattern for this is now available to buy on Ravelry – http://www.ravelry.com/patterns/library/celtic-coasters
These coasters are made by interleaving four rectangular crochet strips. You only need a small amount of of yarn. Ideally made with four or at least two colours as you will see from the photographs.
They should come out about 3.5 inches / 9cm square.
Although this is a very straighforward pattern I do not consider it to be suitable for beginners.
More about devising these coaters
You may remember my “I have a new obsession” post. Well since then I have been working on more celtic designs, in particular I have continued thinking about how to make a coaster.
I had given up the crochet cotton coaster because my hands were hurting but it occured to me that it might be possible to make one in DK weight yarn if I gave up the idea of combining five pieces, so I tried with three and my standard method of working out how many chains were needed.I realised that although this worked well for my celtic bookmark that the gaps in the resulting coaster would be better eliminated, so I reduced the number of trebles (US-dcs) for a crossing point from four to three and tried again.
I had realised that using less trebles per crossing, I could increase the number of pieces from three to four.
Now, I had shown you how I messed around with a drawing program to see how different colours could be used. I had a play and chose to make a couple more coasters like this from my regular stash.andI then thought it might be fun to use just two colours arranged so as to get a chequer pattern in the centre.