Build a Gasifier Right the First Time

Step by Step Plans Show You How


New! Second Edition

Print Book $55
Download Ebook $37

Passing the knowledge down to future generations

The Wood Gasifier Builder’s Bible is a builder’s manual for the construction of an improved WWII type wood gasifier. This knowledge was lost and rediscovered again through much TRIAL & EFFORT.

Inside, you will discover a wealth of photos and schematics, along with step-by-step instructions. Build a safe solid wood gasifier the first time, using mostly local parts and resources.

Transform wood into clean fuel at home

Learn how to turn wood into biofuel in just minutes. Fuel electric generators & enjoy steady off grid power any time, day or night. Make your fuel safe at home.

What if the grid went down? For a long time…

The threat of WWIII, hackers, terrorism, financial collapse, an EMP or even just a strong storm could knock out the power grid for a long time. Are you prepared for that?

Energy insurance for uncertain times

How many types of insurance do you have? Do you have energy insurance? With a wood gasifier you can make fuel and be a shining light in your community, no matter what the future holds.


Wood gasifier and engine system

Wood Gasifier Connected to an Electric Generator


  • Clear step-by-step instructions, 280 pgs. 8.5″ x 11″
  • 400+ pictures, tool list & material list
  • Part drawings & measurements
  • Schematics & sizing charts. Tips and more…

Advanced, yet simplified

  • Hands-free automation with active flow grate technology
  • Advanced heat recycling, air pre-heating & insulation
  • High suction blower for fast starts and clean gas
  • 12 volt design for global use
  • Safety features like safe touch and release lid
  • Designed with affordable, rugged local materials
  • Weldable with mig, tig and stick welders
  • Compact for mobility

FAQ: Can I upgrade to Wood Gas Mastery later? Yes, a discount link is in the book.

FAQ: Can I print off pages from the ebook? Yes.

Gasifier fabrication highlights


Learn How to Convert & Automate Engines to Run on Wood Gas

Print Book $55
Download Ebook $37

Engine Conversion: Run Your Electric Generator on Free Woodgas

This is an engine conversion and automation workshop. We converted a propane electric generator to run on either wood gas or propane. Then, since it made AC power, we built a simple control system for the air-fuel ratio to keep the engine speed stable. Done using off the shelf parts and a little elbow grease.

  • – Clear step-by-step instructions
  • – 200+ pictures, 118 pgs.
  • – Part drawings & measurements
  • – Software code, material list, tips and more…


Revolutionary DIY design:

  • Controls biogas air fuel ratio electronically
  • Hands free automation
  • Uses off the shelf parts like Arduino and an O2 sensor
  • Simple 12 volt electronics
  • Weather resistant design
  • Scalable for various applications
  • Simple copy and paste code
  • Extend your engine’s life

FAQ: Can I print out pages from the .pdf? Yes, of course.

Electronic Carburetor

Electronic Carburetor

Engine conversion to wood gas


Special Discount Bundle

Get the set of print books and save!

$88 reg. $110


Or get both ebooks instead for $67

Purchase Questions?

Reader Reviews



– “I am a red seal fabricator welder and I found this book informative and technically sound.¬†However the format makes things understandable in such a way that even a non-trades person could make the final product happen.

– “Very detailed, loving it.”

– “I would like to thank you so much for the plans. My generator started immediately the very first time!”

“Easy to understand and a terrific amount of illustrations. ”

– “This is a great project with a very valuable unit in the end. I’ll admit it was a little more work than I thought at the beginning but we ended up with an amazing gas generator.

– “Perfect for the home fabricator.”

– “I am a member of a ARES/RACES team that, if called upon, would help provide emergency radio communications to our county in the event of a disaster… I looked into multiple ways of keeping the lights on and the radio station up and decided a wood gasifier was my best and most economical option. Of all the gasifiers I studied, Petersen’s is the best documented, best supported and in my estimation, the best quality one for the do-it-yourselfer.”

– “As builder and avid user of Ben’s gasifier design I highly recommend his latest book. I have all of Ben’s books. Such great material. Ben’s latest book ties it all together. For the builders the info is very valuable saving hours trying to dial in a gasifier. For the historian, potential builders, and gasifier enthusiast it’s a must for the collection. I’m not much of a welder or fabricator I found the building directions very easy to follow.”