The Andy Jumper is named after my dearly departed Grandfather Andy (Andrew). Andy was a no fuss kind of man. He was practical, he was simple and steadfast. I started making my first sample of this jumper just before he passed and I was thinking of him as I was making it. Naming it after him after he left us just seemed fitting.

The Andy Jumper is a top-down raglan style jumper. It includes short rows to raise the back of the neck. 10cm/4in positive ease is recommended on the widest part of the torso.
Optional centre short rows can be added to include bust darts and/or to create a curved base.
I recommend following my free short row tutorials before you tackle this project, all the variations will be used in this project.

Skills
Tunisian simple stitch
Work in the round with a cabled hook (connecting stitch)
Tunisian knit stitch
Increases and decreases
Slip stitch cast on
Tunisian simple stitch short rows

Yarn
Raxor Yarns, raw bamboo sock, fingering weight (Australian 4 ply), 100g/400m, 80% superwash merino, 20% raw bamboo. This is my red sample. Unfortunately, this yarn is no longer available, please use any yarn you can achieve correct gauge with.
My white sample was made using Fibre Arts Shed merino/Donegal nepp yarn. This sample used a different gauge to the red sample and fits differently to the published pattern.

Yarn Quantities
Yarn quantities are calculated based on number of sts in the entire jumper. This includes long sleeves and 60 torso rounds. A 10% contingency is included in these yarn estimates to incorporate optional bust darts and a curved base. If planning on a shorter or longer torso or sleeve, adjust yarn estimates to accommodate this.
348 (392, 452, 496) (560, 602, 660) (694, 770, 800) g
1392 (1568, 1808, 1984) (2240, 2408, 2640) (2776, 3080, 3200) m
1522 (1715, 1977, 2170) (2450, 2633, 2887) (3036, 3368, 3500) y.
This estimate is generous. For example, my size 3 sample weighs 410g and includes bust darts but not a curved base. I had 4 skeins of yarn, and they were all slightly more than 100g each, so I did not need a 5th skein.

Sizes & Measurements
Sizes are expressed in this pattern as
1 (2, 3, 4) (5, 6, 7) (8, 9, 10).
A - neck circumference: 58 (65.5, 67.5, 71.5) (76, 73.5, 78) (80, 82, 82) cm, 22.75 (25.75, 26.5,
28.25) (30, 29, 30.75) (31.5, 32.25, 32.25) in.
B - yoke depth (neck to armpit): 18 (20, 22, 22) (24, 24, 26) (26, 28, 28) cm, 7 (7.75, 8.75, 8.75) (9.5,
9.5, 10.25) (10.25, 11, 11) in.
C - upper arm circumference: 33.5 (34, 38.5, 41.5) (44.5, 51, 54) (56.5, 62, 66.5) cm, 13.25 (13.5,
15.25, 16.25) (17.5, 20, 21.25) (22.25, 24.5, 26.25) in.
D - bust circumference: 87.5 (98, 108.5, 119) (129.5, 140, 150.5) (161, 172.5, 181) cm, 34.5 (38.5,
42.75, 46.75) (51, 55, 59.25) (63.5, 68, 71.25) in. Include a minimum of 10cm/4in positive ease.
E – torso length (armpit to base): 37cm / 14.5in
F – sleeve length (armpit to cuff): 44.5cm / 17.5in

I also wrote a blog article about the gauge of this jumper and what happens when your gauge is off. I hope there are some handy hints in it for you!