Use our free configurator to explore the modular system, visualize the structure in 3D, and see how the components come together to create space.
- ✓ Explore Modular Layouts
- ✓ Real-time 3D preview
- ✓ Save and share designs
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100% Open Source
10 Languages
PB
Peter Bartsch
Founder & Product Designer
From building skateboard ramps as a teen to designing for John Deere and scaling FourKites from $3M to $100M — 15+ years of product design, now building the future of backyard spaces. Open source, because everyone deserves good design.
Why This Matters
Fork it, Hack it, Sell it
Open Source means you can use it commercially, modify it freely, and share your improvements.
View on GitHub🛠️
Hardware-store Parts Only
Built from standard lumber and hardware. No exotic materials or special tools required.
💰
Your $29 Funds Prototypes
When you buy a handbook, you're literally funding the next open-source prototype we build.
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Full CAD + Cut Lists Included
Every handbook includes complete 3D models, 2D drawings, and precise cut lists for zero waste.
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Full Documentation
Complete CAD files, cut lists, assembly guides, and living documentation.
🔗
Ecosystem, Not Just Plans
More than blueprints—join a growing network of suppliers, builders, and fellow makers.
Precision CNC-Cut MDF Templates
Pre-order these professionally manufactured templates – perfect fits, zero waste. Manufactured after reaching minimum order quantities.
🎯 Ecosystem Pre-Order: Building a network of certified manufacturers • Your order funds the first certified partner • Join the open source shelter revolution
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Perfect Fit
Laser-precision cuts ensure every piece fits exactly right.
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Drop-Shipped
Delivered straight to your door from our manufacturing partner.
♻️
Zero Waste
Optimized cutting patterns minimize material waste.
Pre-order system now live! View all available templates →
We're Sequencing From Simple to Complex
🏕️
Why Sauna First
Fewest parts, rustic aesthetic, forgiving construction. Perfect for learning manufacturing without needing precision. Your handbook purchase funds us getting good enough to build the complex stuff right.
🏃♂️
Crawl → Walk → Run
Sauna (crawl): Basic structure, forgiving tolerances
Greenhouse (walk): More complex, tighter fits
Office/Other (run): Full complexity, zero margin for error
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Why Greenhouse Last
Most parts, tightest tolerances, zero margin for error. Water leaks destroy everything. We're building capability first before tackling the most demanding builds.
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Current Focus: Saunosphere
We're building the simplest, most forgiving structure first. This gets us good at manufacturing while giving you something valuable to build.
Support Development & Get the Plans
Two ways to support: Buy individual handbooks as they're released, or become a Lifetime Supporter and get everything we ever build.
Standard Edition
$29
The Essential Start.
Get the Whole Thiosphere Handbook now. Buy additional handbooks as they release ($25-55 each).
Get the Whole Thiosphere Handbook now. Buy additional handbooks as they release ($25-55 each).
- ✅ Current PDF Plans
- ✅ Complete Build Guide
- ❌ Future Updates
Lifetime Edition
$79
Get the SDK handbook + all future updates to this handbook forever. As we improve the plans, you get every revision.
- ✅ Lifetime Updates
- ✅ Current PDF Plans
- ✅ Complete Build Guide
Founder's Edition
$299
Every handbook we ever release, forever. Sauna, greenhouse, office - all of them. Plus direct team access and founder badge.
- ✅ All Future Handbooks
- ✅ Lifetime Updates
- ✅ Founder's Badge & Swag
👷
Call for First Builders!
We are looking for the first 5 makers to document their build process. In exchange for high-quality photos and video, we'll feature you on our main site and send you exclusive Thiosphere swag.
Apply to be a First BuilderTransparent Funding — Join the Journey
Every handbook sold directly funds the first Saunosphere prototype. You are not just buying plans — you are backing the movement.
Progress to Sauna Prototype
$2,950 / $8,500
Latest from the Workshop
Follow our journey building in public. Real progress, real challenges, real solutions.
Community Builds
Share your Thiosphere builds with the community! Use the Share button in our configurator to create a link to your design.