fencing: Choice - picket fence $400ish

docs/playground/fencing.md

@@ -4,16 +4,49 @@ Boundary is `3570` x `2800`. `6370` total.
 
 1.2m seems good against Augie.
 
-## Exploration
+Has a gate.
+
+Rails 150mm down from top and up from bottom of pickets.
 
-Bunnings:
+> Fix the rails to the posts with two 75 x 3.75mm galvanised bullet head nails. Joins in the rails should be butted together in the centre of the post notch. Stagger the joins in the rails over different posts. 
+> Don't use plain steel nails, as they'll eventually rust and leave brown stains on the fence. Use galvanised fasteners for all outdoor fixings.
+
+## Exploration
 
 1. [70mm H3 Treated Pine Picket 1.2m](https://www.bunnings.com.au/70-x-19mm-fence-picket-h3-treated-pine-windsor-1-2m_p0051791): $4.95
 2. [90mm H3 Treated Pine Deck 4.8m](https://www.bunnings.com.au/90-x-22mm-decking-h3-treated-pine-4-8m_p8032591): $23.90
 3. [2.2m x 1.2m Pool Fence](https://www.bunnings.com.au/rapidfence-2200-x-1200mm-dark-grey-square-tube-pool-fence-panel_p0261643): $89
 
-Cost:
+Costs:
 
-1. 70mm gaps gives 45 pickets (should be less after plinths): $223
+1. 70mm gaps gives 45 pickets (should be less after posts): $223
 2. 70mm gaps gives 40 1.2m cuts; 10 planks: $239
-3. 3-4 fences gives: $267 - $356
+3. 3-4 fences gives: $267 - $356
+
+### Picket Fence
+
+Also need.
+
+1. Rails
+
+- [70x35mm 3.6m](https://www.bunnings.com.au/70-x-35mm-outdoor-framing-mgp10-h3-treated-pine-3-6m_p8032107): $19.08
+- [70x35 3.0m](https://www.bunnings.com.au/70-x-35mm-outdoor-framing-mgp10-h3-treated-pine-3-0m_p8032105): $15.90
+
+1. Posts: Need 4 rect and 1 square
+
+- [90x45mm 4.8m](https://www.bunnings.com.au/90-x-45mm-outdoor-framing-mgp10-h3-treated-pine-4-8m_p8032180): $40.80
+- [80x80mm 1.8m](https://www.bunnings.com.au/88-x-88mm-1-8m-f7-h4-kd-treated-pine-premium-post_p8423171): $49
+
+Costs:
+
+- Rails: $70
+- Posts: $90
+
+## Options
+
+1. Picket fence: $383 + hinges
+2. Pool fence: $267 - $356
+
+## Choice
+
+Go with the picket fence it's cuter.