Flue Pipe Organ

Generating Pipe Dimensions

Setup

# create python virtual env
python -m venv venv

# activate venv
source venv/bin/activate      # if using bash
source venv/bin/activate.fish # if using fish

# install dependencies
pip install -r requirements.txt

Generate

# make sure the python venv is still activated

# view all input parameters
python pipe_gen.py --help

Future Ideas

Generate CAD files

generate OpenSCAD files from pipe dimensions and then generate an STL file using the openscad commadline tool:

openscad -o result.stl my_generated_pipe_dimensions.scad

then, we can use FreeCAD to convert to an STEP file and generate gcode for cnc.

Bill of Materials

• 1/4inch DC 12V 2 Way Normally Closed Electric Solenoid Air Valve, Stainless Steel
• Flow Rate: 22 SCFM at 100 PSI (Air Flow)
• One-Way Air Valve
• this could be used to pressurize the wind chest from a simple compression source (bike pump? to start with)

References

• Recipe for Wooden Organ Flue Pipes
• The physics of voicing organ flue pipes
• Pipes made of glued wood lumber
• Pipes
• Pipe Scaling
• Calculating the Flowrate Requirement for a Pipe
• Pipe Anatomy
• Pipe cut-up and flue dimensioning chart
• Ising's Formula
• Pushing and bouncing air
• The physics of organ blowing
• Wikipedia: Typical Organ Wind Pressures