The B9 Builders Club: Getting Started with the Community
What the B9 Builders Club is, what it offers builders at every stage, how to use the forums effectively, and what to expect from your first build with community …
Read more →The Robot Workshop
From classic robot builders to today's STEM makers
Latest Articles
Silicone Mold Making Part 3: Multi-Part Molds and Complex Geometries
Advanced silicone mold making for complex shapes — three-part and four-part molds, core molds for hollow castings, and strategies for masters with challenging …
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WonderFest 2025: B9 Robot Display and Builder Community Report
Report from WonderFest 2025 in Louisville, Kentucky — B9 robot displays, builder community highlights, and notes from the show floor.
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Cold-Cast Metal Resin: Bronze, Aluminum, and Copper Finishes for Props
How to achieve genuine metal-looking prop parts using cold-cast resin — mixing metal powder into urethane resin and polishing to reveal real metal surfaces.
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B9 Robot Radar Section: Construction Guide
How to build the B9 robot's radar section — the rotating sensor assembly on top of the head dome. Covers structure, motor drive, lighting, and mounting.
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Painting and Finishing Cast Resin Parts: Surface Prep to Final Coat
How to properly paint and finish urethane resin castings — surface preparation, primer selection, paint compatibility, and achieving professional results on …
Read more →STEM & Making
Engineering Scholarships for Maker Students: How to Position Hands-On Skills
How students with maker backgrounds -- prop building, electronics, fabrication -- can identify and apply for engineering scholarships, and how to present …
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Science Fair Projects Using Mold Making and Materials Science
Ideas and approaches for science fair projects built around mold making, polymer chemistry, and materials testing -- with guidance on how to frame fabrication …
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Women in Making and Fabrication: Communities, Resources, and Opportunities
Overview of women's participation in maker culture, prop building, and fabrication — with resources for female makers pursuing STEM opportunities and …
Read more →Prop Building
Cold-Cast Metal Resin: Bronze, Aluminum, and Copper Finishes for Props
How to achieve genuine metal-looking prop parts using cold-cast resin — mixing metal powder into urethane resin and polishing to reveal real metal surfaces.
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Sci-Fi TV Prop Building: Skills, Materials, and Where to Start
Overview of sci-fi television prop replica building -- the skills involved, materials used, and how to approach your first build. Covers mold making, casting, …
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Lost in Space Prop Replicas: Building the B9 Robot and Beyond
Guide to building Lost in Space prop replicas -- the B9 robot, the Jupiter 2, control consoles, and set dressing pieces. Covers reference sources, materials, …
Read more →Mold Making
Silicone Mold Making Part 3: Multi-Part Molds and Complex Geometries
Advanced silicone mold making for complex shapes — three-part and four-part molds, core molds for hollow castings, and strategies for masters with challenging …
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Silicone Mold Making: Troubleshooting Common Problems
Diagnose and fix the most common silicone mold making failures — uncured spots, tearing, bubbles, inhibition, and molds that won't release. Covers platinum and …
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Mold Box Construction: Techniques for Any Size and Shape
How to build mold boxes for silicone rubber casting. Covers LEGO brick method, melamine board boxes, clay bedding for two-part molds, and large-format …
Read more →Resin Casting
Painting and Finishing Cast Resin Parts: Surface Prep to Final Coat
How to properly paint and finish urethane resin castings — surface preparation, primer selection, paint compatibility, and achieving professional results on …
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Urethane Resin for Beginners: What You Need to Know Before Your First Pour
Beginner's guide to urethane resin casting. Covers safety, material selection, workspace setup, first pour preparation, and the most common mistakes to avoid.
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Advanced Resin Casting Techniques for Prop Fabrication
Advanced urethane resin casting techniques including pressure casting, rotational casting, foam fills, colorants, and surface finishing for production-quality …
Read more →B9 Robot Construction
The B9 Builders Club: Getting Started with the Community
What the B9 Builders Club is, what it offers builders at every stage, how to use the forums effectively, and what to expect from your first build with community …
Read more →B9 Robot Radar Section: Construction Guide
How to build the B9 robot's radar section — the rotating sensor assembly on top of the head dome. Covers structure, motor drive, lighting, and mounting.
Read more →
B9 Robot Collar Section: Construction and Materials
How to build the B9 robot's accordion collar section — the flexible neck piece between the torso and head. Covers materials, construction methods, and fitting …
Read more →Lost in Space
The B9 Robot: History of an Iconic Prop from Lost in Space
The complete history of the B9 robot from Lost in Space -- from its construction by Bob Stewart for the 1965 pilot to its legacy in the prop replica community.
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In Memory of Bob May: The Man Who Was the B9 Robot
A tribute to Bob May, the actor who physically performed the B9 robot in all 83 episodes of Lost in Space from 1965 to 1968.
Read more →Conventions
WonderFest 2025: B9 Robot Display and Builder Community Report
Report from WonderFest 2025 in Louisville, Kentucky — B9 robot displays, builder community highlights, and notes from the show floor.
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WonderFest Louisville: The Model and Prop Convention for Serious Builders
What WonderFest in Louisville, Kentucky is, what to expect, and why it's the most important annual gathering for B9 robot builders and sci-fi prop replica …
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WonderFest 2005: Louisville Convention Report
Convention report from WonderFest 2005 in Louisville, Kentucky. Covers B9 robot displays, model kit vendors, prop replica builders, and the maker community at …
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