If you’re interested in the full build, please visit Deskthority.net
Overview
Opportunity
- Unique offering: first board specifically designed for Omron B3G-S
- Innovation: merging vintage switch technology with modern compatibility
- 75% layout: introduces variety to the market in 2018
Constraints
- Scarcity: difficulty sourcing Omron switches
- Technical challenges: high failure rate while harvesting the switches
- Compatibility: limited keycap options due to the unique dimensions of B3G-S
Accomplishments
✓ Excitement for 75%: paved the way for many other variants to come, especially the Knight
✓ Community awareness: raised interests on the Omron B3G-S as a viable daily driver
✓ Proven theory: demonstrated that sandwich design can deliver a quiet and soft typing experience
✓ Experience: Omron75 gave me the confidence and skill upgrade needed to start the Boring Box
Timeline
01
Ideation & Analysis
Mar 2018
- Gaining interest in B3G-S switches since the acquisition of the Datavue Spark Laptop
- Researching sandwich system from Filco OEM, VE.A, and the Cheat keyboards
02
Detail Designs
Jun 2018
- Prepro
- Concept designs
- Implementing complimentary features
- Risers for feet

03
Prototypes & Revisions
Apr 2019 - Jun 2019
- First prototype
- Switch breakdown
- Documentation on Deskthority.net
- Changing risers to single foot bar
04
Final Design
Aug 2019
- Final revision
- Final design doc
- Two final products
