Architect complex weaving drafts with precision grid tools, verify 4-8 shaft loom compatibility instantly, and calculate accurate sett using proven Ashenhurst formulas
Download Volcano CrownAll starter packages activate upon first app launch. No payment information required. Codes valid for new installations only.
Volcano Crown operates as a comprehensive digital loom companion, translating traditional weaving notation into interactive grid-based drafts. The application processes threading sequences across 4 to 8 shafts, validates tie-up configurations against your physical loom specifications, and generates treadling patterns that account for real-world fabric behavior.
At its core sits a specialized calculation engine that applies the Ashenhurst factor formula to your yarn WPI measurements, producing accurate EPI and PPI recommendations. The system cross-references these values with your loom's reed specifications, automatically determining optimal threading patterns like skip-1-1-1-1 for 10-dent reeds when working with 8 EPI sett requirements.
Every draft you design undergoes structural analysis to identify potential issues: the float map viewer highlights areas where warp or weft threads extend beyond safe limits for your chosen fabric application, whether garment-weight with 3/8 inch float restrictions or more permissive décor specifications. This prevents costly threading errors before you ever sit at your loom.
Design complex patterns with precise cell-by-cell control. Toggle between threading, tie-up, and treadling views with instant visual feedback showing how your fabric will appear on the loom.
Input your physical loom specifications once, then verify every draft fits your shaft count, treadle availability, and weaving width constraints before committing to a project.
Enter yarn WPI measurements and receive mathematically precise EPI and PPI recommendations using industry-standard Ashenhurst factors, with automatic rounding to practical weaving densities.
Catalog your entire yarn collection with fiber content, weight classification, yardage per skein, and measured WPI. The system suggests yarns from your inventory that match project requirements.
Visualize thread float lengths across your entire draft with color-coded warnings for areas exceeding safe limits. Switch between fabric face and back views to ensure structural integrity.
Receive exact reed dent specifications and threading sequences like skip-1-1-1-1 patterns that achieve your target sett with available reed sizes from 8-dent to 15-dent configurations.
Volcano Crown emerged from collaboration between professional textile designers and software engineers who recognized the gap between traditional weaving education and modern digital tools. The calculation algorithms incorporate decades of empirical weaving data, ensuring recommendations align with real-world loom behavior rather than theoretical ideals. Continuous updates refine the yarn database and expand loom compatibility profiles based on community feedback from thousands of active weavers.
Available for iOS 14+ and Android 9+ | Free download | Updated 07.11.2026
Download Volcano CrownRequires 120MB storage space. No subscription fees. Optional in-app purchases for advanced pattern libraries. Suitable for ages 12 and above. Contains no advertising.