"Make a Model of a chair from scratch"

-- local script 
-- Create the base part
local chairPart = Instance.new("Part")
chairPart.Name = "ChairPart"
chairPart.Size = Vector3.new(2, 0.2, 2)
chairPart.Anchored = true
chairPart.CanCollide = false
chairPart.Parent = workspace

-- Create the back part
local chairBack = Instance.new("Part")
chairBack.Name = "ChairBack"
chairBack.Size = Vector3.new(2, 0.2, 0.2)
chairBack.Anchored = true
chairBack.CanCollide = false
chairBack.Parent = workspace

-- Create the legs
local chairLeg1 = Instance.new("Part")
chairLeg1.Name = "ChairLeg1"
chairLeg1.Size = Vector3.new(0.2, 0.2, 0.2)
chairLeg1.Anchored = true
chairLeg1.CanCollide = false
chairLeg1.Parent = workspace

local chairLeg2 = Instance.new("Part")
chairLeg2.Name = "ChairLeg2"
chairLeg2.Size = Vector3.new(0.2, 0.2, 0.2)
chairLeg2.Anchored = true
chairLeg2.CanCollide = false
chairLeg2.Parent = workspace

local chairLeg3 = Instance.new("Part")
chairLeg3.Name = "ChairLeg3"
chairLeg3.Size = Vector3.new(0.2, 0.2, 0.2)
chairLeg3.Anchored = true
chairLeg3.CanCollide = false
chairLeg3.Parent = workspace

local chairLeg4 = Instance.new("Part")
chairLeg4.Name = "ChairLeg4"
chairLeg4.Size = Vector3.new(0.2, 0.2, 0.2)
chairLeg4.Anchored = true
chairLeg4.CanCollide = false
chairLeg4.Parent = workspace

-- Position the parts
chairPart.CFrame = CFrame.new(0, 0, 0)
chairBack.CFrame = CFrame.new(0, 0.1, 1)
chairLeg1.CFrame = CFrame.new(-0.9, -0.1, -0.9)
chairLeg2.CFrame = CFrame.new(0.9, -0.1, -0.9)
chairLeg3.CFrame = CFrame.new(-0.9, -0.1, 0.9)
chairLeg4.CFrame = CFrame.new(0.9, -0.1, 0.9)

-- Create the welds
local weld1 = Instance.new("Weld")
weld1.Parent = chairPart
weld1.Part0 = chairPart
weld1.Part1 = chairBack
weld1.C0 = CFrame.new(0, 0.1, -1)

local weld2 = Instance.new("Weld")
weld2.Parent = chairPart
weld2.Part0 = chairPart
weld2.Part1 = chairLeg1
weld2.C0 = CFrame.new(-1, -0.1, -1)

local weld3 = Instance.new("Weld")
weld3.Parent = chairPart
weld3.Part0 = chairPart
weld3.Part1 = chairLeg2
weld3.C0 = CFrame.new(1, -0.1, -1)

local weld4 = Instance.new("Weld")
weld4.Parent = chairPart
weld4.Part0 = chairPart
weld4.Part1 = chairLeg3
weld4.C0 = CFrame.new(-1, -0.1, 1)

local weld5 = Instance.new("Weld")
weld5.Parent = chairPart
weld5.Part0 = chairPart
weld5.Part1 = chairLeg4
weld5.C0 = CFrame.new(1, -0.1, 1)