Yet another pattern that I've adjusted for myself, for ease of reading as well as understanding. The website that it came from has wonderful step by step photo instructions for how to do the LTC, so all you'll find here are the written instructions. Visit the link if you need more of a visual instruction.
Lattice Hat
Materials:
H hook for body
G hook for ribbing
Abbreviations:
SC- single crochet
DC- double crochet
FPDC- Front post double crochet
BPDC- Back post double crochet
LTC- Lattice treble cluster
Special Stitch:
Lattice Treble Cluster:
Instructions:
YO 2 times. Insert hook under first LTC from round before last, YO, pull loop up. (5 loops on hook)
YO, pull through first two loops on hook. YO, pull through next 2 loops on hook. (2 loops remain on hook)
YO 2 times. Insert hook under next LTC from round before last, YO, pull loop up. (5 loops on hook)
YO, pull through first two loops on hook. YO, pull through next 2 loops on hook. (3 loops on hook)
YO, pull through all three loops. LTC is complete.
Additional Notes:
Ch 2 at the beginning of each dc row, counts as first dc.
For rows that begin with fpdc: ch 2, fpdc down into starting stitch. Ignore ch 2 henceforth. Sl st into the first actual stitch at the end of every row.
Pattern:
Ch 4, join
R1: 9 dc in ring.
R2: 2 fpdc in each dc (18 fpdc)
R3: * fpdc in fpdc, dc in space between fpdc, fpdc in next 2 fpdc, dc in space between fpdc, fpdc in next fpdc* repeat around. (18 fpdc, 9 dc)
R4: *fpdc in fpdc, dc in dc, fpdc in fpdc, dc in space between fpdc* repeat around (18 fpdc, 18 dc)
R5: *fpdc in fpdc, dc inc in dc, fpdc in fpdc, dc in dc* repeat around (18 fpdc, 27 dc)
R6: *Fpdc in fpdc, dc in dc, dc in dc, fpdc in fpdc, dc inc in dc* repeat around. (18 fpdc, 36 dc)
R7: *Fpdc in fpdc, dc in dc, dc inc in dc* repeat around. (18 fpdc, 54 dc)
R8: dc around. (72 dc)
R9: ch 1, sc in same st, sc, LTC.(for first repetition use fpdc, for all others, follow special stitch instructions) *sk 1 dc, sc next 3 dc, LTC* repeat 17 times, sk 1 dc, sc next dc, slst in first sc (18 LTC, 54 sc)
R10: Dc around (72 dc)
R11: ch 1, LTC, *
sc in next 3 dc, LTC, sk 1 dc* repeat 17 times, sc next 3 dc, slst to first LTC. (18 LTC, 54 sc)
R12-21: Repeat Rows 8-11, ending with row 9.
Switch to G hook
R22: *fpdc down into sc, bpdc, fpdc, bpdc* repeat around (36 fpdc, 36 bpdc) FPDC should fall on the peak of the LTC and the middle of the LTC.
R23-24: fpdc in fpdc, bpdc in bpdc around. (36 fpdc, 36 bpdc)
Fasten off and weave in ends.
original pattern may be found here: http://www.rheatheylia.com/index.php?page=patterns&id=11