Custom quill shuttle to left recently completed, shown next to a standard (for 4" bobbin) boat shuttle to the right. Quill shuttle is 12 1/2" L, 1 1/4" W, 13/16" H and cavity is 5" L (for holding 4 1/2" long quills). Rod is 3.5mm diameter, operates up & down with an internal spring mechanism, and fits commercial cardboard quills. There are lignum vitae inserts at either end of the yarn slot. Woods on both shuttles: fiddleback (hard) maple top/bottom, 2nd layers of black walnut, and bird's eye maple center layer.
The first two shuttles, left to right, have walnut featherwood tops/bottoms, curly cherry as second layers, and curly maple (bird's eye maple) in the center. Black yarn hole surround & slot is ebony, red is pink ivory. Shuttle to far right is 7 layers: bird's eye maple tops/bottoms, then quartersawn sycamore, quartersawn oak, and curly maple in the center.
Crammed and space threading in reed...use 5dent reed, thread each inch...15epi,10epi,5epi,10epi...repeat for a total of nine inches...using the same size thread throughout. I used alpaca approx 1650ypp...97 ends @ 3yds long. Thread heddles in a striaght draw, set treadles with plain weave on treadle 1(1/3) and 6(2/4), with 2/2 twill on treadles 2(1/2),3(2/3),4(3/4),5(4/1). Treadle 1,2,3,4,5,6,5,4,3,2,...repeat.