Prime Coasters (with Pattern)

Prime Coasters

Prime as in prime numbers Wink

But don't worry, there's no math involved, I just noticed all those primes when I was trying to come up with a name. You start with 5 ch, make 11 V-sts, so the finished coaster has 11 "corners", stop with 3 or 7 dcs between the V-sts and make 5 dc-shells as an edging.

Working the dcs between the stitches of the previous round (instead of into the stitches) separates the dcs a bit, makes the coaster look less solid. Contrary to that it also gives you additional thickness and stability.

The pattern includes instructions for normal coasters and also for a larger size to use for a pitcher or bottle.

Materials:

2 balls cotton yarn (50g/125m)
- I got 8 small coasters and one larger coaster from my 2 balls of cotton
- Also you could use any yarn you want with a corresponding hook,
just adjust the number of rounds before the edging
to get the size you want
3,5 mm/ E hook
tapestry needle

Finished Size:

Small Coasters: 9,5cm/3,75" diameter
Larger Coaster: 15cm/6" diameter

Pattern notes:

US notations used.
All dcs are worked between the sts of the rnd before.
Ch3 at the beginning of the round counts as (1dc, ch).
V-st: (dc, ch1, dc) all into same ch1-sp

Coasters:
Ch 5, join with a sl st to form a ring
Rnd 1: Ch3, *dc into ring, ch1* 10 times, sl st into beg ch (= 11 ch-sp)
Rnd 2: Ch 3, dc into same sp (1st V-st made), V-stitch in each ch-sp around, join with sl st to beg ch (= 11 V-sts)
Rnd 3: Ch3, dc into same sp, *1dc between dcs of prev rnd, V-st in ch-sp* repeat around, ending with dc right before 1st V-st of this row, join with sl st to beg ch (= 11 V-sts, 1 dc between V-sts)
Rnd 4: Ch3, dc into same sp, *1dc between each of the next dcs until ch-sp, V-st in ch-sp* repeat around, ending with dc right before 1st V-st of this row, join with sl st to beg ch (= 11 V-sts, 2 dc between V-sts)
Repeat Rnd 4.
In every round you increase the number of dcs between the V-sts by one (i.e. Rnd 4: 2dc , Rnd 5: 3dc, etc).
For the small coasters I stopped after rnd 5, that is 3dcs between the V-sts.
For the larger coaster for the pitcher I continued until I had 7 dcs between the V-sts. Both versions have the same edging.

Edging:
The edging is not worked between the sts of prev rnd, work into sts as normal.
Sl st in every st for the ch1-sp and the 2 following dcs, sc in every dc until ch1-sp, *5dc in ch1-sp, skip 1dc, sc in every dc until ch1-sp* around, end with 5dc in last ch1-sp and sl st into sl st made at beg of rnd, fasten off.
(The skipped dc is the 2nd dc of V-st that is almost hidden under the 5dc)
Weave in ends.
Done!

Note: This is my first attempt at writing down a pattern for someone else to follow. It has not been tested. So if you find any errors or unclear instructions, please let me know, so I can correct/clarify the pattern. Thanks.
Also, if you make this, please post your results. I would like to know, what this looks like in other colors/yarns.