Overview
The Screwball Modular Bowl by Vapvana is a refined evolution of the original Screwball bowl lineup, combining the performance of both the standard Hybrid Bowl and the Micro Hybrid Bowl into one modular design.
At its core is a Grade 2 titanium bowl housing paired with a replaceable glass joint, just like the original hybrid bowls. What’s new is the threaded modular bowl section, allowing you to swap between regular and micro bowl inserts depending on your session style.
The result is the same fast, aggressive extraction the Screwball is known for — now with far more flexibility and less redundancy.
Modular Bowl System
The threaded bowl section can be swapped in seconds, letting you choose between two capacities without changing the entire bowl assembly.
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Regular Bowl: Up to ~0.3 g capacity, with a built-in half-pack screen ridge allowing reduced loads around ~0.15 g.
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Micro Bowl: Approx. ~0.1 g capacity, designed for ultra-efficient extractions with minimal material.
Both bowl sizes use standard screens and thread directly into the titanium housing, maintaining excellent thermal contact and airflow consistency.
Vapour Signature & Performance
The Micro bowl insert features slightly thicker walls, shifting performance toward a convection-heavy (hot air dominant) profile. This makes it ideal for quick, powerful extractions using very small amounts of material.
The Regular bowl insert retains thinner walls, allowing for faster heat soak and a more classic hybrid conduction + convection experience. Despite the wider bowl diameter, extraction speed remains exceptionally fast — preserving the defining Screwball performance.
Importantly, overall performance remains unchanged compared to the original bowls. The modular design simply gives you both behaviours in one compact system.
Why Modular Matters
Previously, users needed separate bowls to switch between standard and micro setups. The Screwball Modular Bowl eliminates that redundancy — reducing storage needs, material waste, and overall cost.
It’s a more efficient approach to manufacturing and ownership, without sacrificing airflow, heat transfer, or extraction speed.
Compatibility
- Ace Heater
- Screwball Heater
What’s Included
- 1 × Grade 2 Titanium Modular Bowl (wood handle installed)
- 1 × Regular bowl insert (20mm screen size)
- 1 × Micro bowl insert (15mm screen size)
- 1 × 14.4mm male glass joint (installed)
- 1 × 18.8mm male glass joint
- 2 × Spare Viton O-rings
Screen Compatibility
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Regular bowl: 20mm screens
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Micro bowl: 15mm screens
The modular bowl uses the same screen sizes as the original Screwball bowls, making replacements simple and inexpensive.
Joint Fit & Removal Tips
The glass joints on these bowls are designed for a snug, secure fit and may feel tight when removing. This is normal.
For best results, grip the glass joint and titanium bowl firmly and pull straight apart — do not twist or wiggle. Take your time and you'll be good to go.
FAQ — Screwball Modular Bowl
Does this change Screwball performance?
No. Extraction speed and vapour output remain the same as the original bowls.
Can I switch bowls mid-session?
Yes. Once cooled, the threaded inserts can be swapped quickly.
Is the Micro bowl only for low temperatures?
No. The Micro bowl excels at fast, high-efficiency extraction across a wide temperature range.
Final Thoughts
The Screwball Modular Bowl is a smart refinement of an already excellent design. By combining two bowl sizes into a single titanium system, Vapvana delivers flexibility, efficiency, and performance without compromise.
For Screwball users who want maximum versatility with minimal clutter, this modular bowl is an easy upgrade.
