Water Gun Blueprint Development
Budget: $250 – $750 USD
P01 — Shell Left Blueprint
Shell Left Specification
Purpose
Left half of main body; houses internal components.
Dimensions
• Length: 17.5 in
• Height: 8.0 in
• Half‑width: 1.75 in
• Wall thickness: 2.5–3.0 mm
• Draft: 1–2° on all vertical faces
Features
• Locating pins (x6)
• Screw bosses (x6)
• Internal ribs (1.5–2.0 mm thick)
• Pump guide cutout
• Nozzle housing interface
• Trigger cavity
• Tank mounting bracket
Notes
• Maintain symmetry with Shell Right
• No undercuts
• All ribs drafted
---
P02 — Shell Right Blueprint
Shell Right Specification
Purpose
Right half of main body; mates with Shell Left.
Dimensions
Same as Shell Left.
Features
• Locating sockets
• Screw boss receivers
• Mirror of all internal ribs
• Pump guide cutout
• Nozzle housing interface
• Trigger cavity
• Tank mounting bracket
Notes
• Must align perfectly with Shell Left
• Maintain 2–3 mm clearance around internal parts
---
P03 — Pump Handle Blueprint
Pump Handle Specification
Dimensions
• Length: 5.0–6.0 in
• Diameter: 1.25–1.5 in
• Wall thickness: 2.0–2.5 mm
• Draft: 1°
Features
• Internal guide tube cavity
• Front stop
• Rear stop
• Grip texture (optional)
Notes
• Must slide smoothly on guide tube
• Clearance: 2–3 mm
---
P04 — Pump Guide Tube Blueprint
Pump Guide Tube Specification
Dimensions
• Length: 4.0–5.0 in
• Outer diameter: 0.75–1.0 in
• Wall thickness: 2.0 mm
Features
• Center alignment tabs
• Front stop interface
Notes
• Must be centered inside shell
---
P05 — Nozzle Assembly Blueprint
Nozzle Assembly Specification
Dimensions
• Outer diameter: 1.0–1.25 in
• Inner opening: 0.25–0.5 in
• Housing width: 2.0–2.5 in
Features
• Locking tabs
• Nozzle seat
• Alignment channel
Notes
• Must align with pressure chamber housing
---
P06 — Trigger Blueprint
Trigger Specification
Dimensions
• Length: 1.0–1.25 in
• Thickness: 0.25–0.35 in
• Pivot hole: 0.125–0.187 in
Features
• Pivot boss
• Return spring seat (optional)
Notes
• Clearance: 1–2 mm
---
P07 — Grip Frame Blueprint
Grip Frame Specification
Dimensions
• Width: 1.1–1.3 in
• Height: 4.0–4.5 in
• Wall thickness: 2.5–3.0 mm
Features
• Trigger cavity
• Rib reinforcement
• Mounting tabs
---
P08 — Pressure Chamber Housing Blueprint
Pressure Chamber Housing Specification
Dimensions
• Length: 4.0–5.0 in
• Diameter: 1.5–2.0 in
• Wall thickness: 3.0–3.5 mm
Features
• Alignment tabs
• Nozzle interface
Notes
• Clearance to shell: 2–3 mm
---
P09 — Reservoir/Tank Blueprint
Tank Specification
Dimensions
• Length: 4.0–5.0 in
• Height: 3.0–4.0 in
• Width: 2.0–2.5 in
• Wall thickness: 2.5–3.0 mm
Features
• Mounting bracket
• Neck opening (optional)
---
P10 — Internal Ribs & Supports Blueprint
Internal Ribs Specification
Dimensions
• Thickness: 1.5–2.0 mm
• Height: 2–3× wall thickness
• Draft: 0.5–1°
Features
• Boss reinforcement ribs
• Pump guide support ribs
• Trigger pivot reinforcement
---
P11 — Screw Bosses Blueprint
Screw Boss Specification
Dimensions
• Outer diameter: 6–8 mm
• Inner diameter: 3–4 mm
• Wall thickness: 2.5–3.0 mm
• Draft: 1°
Features
• Rib reinforcement
• Alignment with opposite shell
---
P12 — Alignment Features Blueprint
Alignment Features Specification
Features
• Locating pins
• Locating sockets
• Rib‑to‑rib alignment
• Nozzle alignment channel
• Pump guide alignment tabs
Notes
• All drafted
• No undercuts
Shell Left Specification
Purpose
Left half of main body; houses internal components.
Dimensions
• Length: 17.5 in
• Height: 8.0 in
• Half‑width: 1.75 in
• Wall thickness: 2.5–3.0 mm
• Draft: 1–2° on all vertical faces
Features
• Locating pins (x6)
• Screw bosses (x6)
• Internal ribs (1.5–2.0 mm thick)
• Pump guide cutout
• Nozzle housing interface
• Trigger cavity
• Tank mounting bracket
Notes
• Maintain symmetry with Shell Right
• No undercuts
• All ribs drafted
---
P02 — Shell Right Blueprint
Shell Right Specification
Purpose
Right half of main body; mates with Shell Left.
Dimensions
Same as Shell Left.
Features
• Locating sockets
• Screw boss receivers
• Mirror of all internal ribs
• Pump guide cutout
• Nozzle housing interface
• Trigger cavity
• Tank mounting bracket
Notes
• Must align perfectly with Shell Left
• Maintain 2–3 mm clearance around internal parts
---
P03 — Pump Handle Blueprint
Pump Handle Specification
Dimensions
• Length: 5.0–6.0 in
• Diameter: 1.25–1.5 in
• Wall thickness: 2.0–2.5 mm
• Draft: 1°
Features
• Internal guide tube cavity
• Front stop
• Rear stop
• Grip texture (optional)
Notes
• Must slide smoothly on guide tube
• Clearance: 2–3 mm
---
P04 — Pump Guide Tube Blueprint
Pump Guide Tube Specification
Dimensions
• Length: 4.0–5.0 in
• Outer diameter: 0.75–1.0 in
• Wall thickness: 2.0 mm
Features
• Center alignment tabs
• Front stop interface
Notes
• Must be centered inside shell
---
P05 — Nozzle Assembly Blueprint
Nozzle Assembly Specification
Dimensions
• Outer diameter: 1.0–1.25 in
• Inner opening: 0.25–0.5 in
• Housing width: 2.0–2.5 in
Features
• Locking tabs
• Nozzle seat
• Alignment channel
Notes
• Must align with pressure chamber housing
---
P06 — Trigger Blueprint
Trigger Specification
Dimensions
• Length: 1.0–1.25 in
• Thickness: 0.25–0.35 in
• Pivot hole: 0.125–0.187 in
Features
• Pivot boss
• Return spring seat (optional)
Notes
• Clearance: 1–2 mm
---
P07 — Grip Frame Blueprint
Grip Frame Specification
Dimensions
• Width: 1.1–1.3 in
• Height: 4.0–4.5 in
• Wall thickness: 2.5–3.0 mm
Features
• Trigger cavity
• Rib reinforcement
• Mounting tabs
---
P08 — Pressure Chamber Housing Blueprint
Pressure Chamber Housing Specification
Dimensions
• Length: 4.0–5.0 in
• Diameter: 1.5–2.0 in
• Wall thickness: 3.0–3.5 mm
Features
• Alignment tabs
• Nozzle interface
Notes
• Clearance to shell: 2–3 mm
---
P09 — Reservoir/Tank Blueprint
Tank Specification
Dimensions
• Length: 4.0–5.0 in
• Height: 3.0–4.0 in
• Width: 2.0–2.5 in
• Wall thickness: 2.5–3.0 mm
Features
• Mounting bracket
• Neck opening (optional)
---
P10 — Internal Ribs & Supports Blueprint
Internal Ribs Specification
Dimensions
• Thickness: 1.5–2.0 mm
• Height: 2–3× wall thickness
• Draft: 0.5–1°
Features
• Boss reinforcement ribs
• Pump guide support ribs
• Trigger pivot reinforcement
---
P11 — Screw Bosses Blueprint
Screw Boss Specification
Dimensions
• Outer diameter: 6–8 mm
• Inner diameter: 3–4 mm
• Wall thickness: 2.5–3.0 mm
• Draft: 1°
Features
• Rib reinforcement
• Alignment with opposite shell
---
P12 — Alignment Features Blueprint
Alignment Features Specification
Features
• Locating pins
• Locating sockets
• Rib‑to‑rib alignment
• Nozzle alignment channel
• Pump guide alignment tabs
Notes
• All drafted
• No undercuts