If you run a slitting line, you have several options for managing arbor setups — from manual spreadsheets to dedicated software. This guide compares the major solutions available in 2026 to help you make an informed decision.
Disclosure: This comparison is written by the OptiStack team. We've done our best to be factually accurate about competitor products based on publicly available information. If anything is incorrect, please contact us and we'll update it.
The Options at a Glance
| Feature | OptiStack Pro | TKM CASKA 4.0 | ANDRITZ ASKOedge | Spreadsheet / Manual |
|---|---|---|---|---|
| Arbor stack map generation | Yes | Yes | Yes (clearance-focused) | Manual calculation |
| Inventory-aware builds | Yes — strict qty checking | Partial | No | No |
| Shimless / fraction kit mode | Yes | Unknown | No | No |
| Alternating engagement | Yes | Yes | Yes | Extremely difficult |
| Printable shop-floor PDF | Yes — visual diagram + BOM | Yes | Yes | Manual |
| Web-based (no install) | Yes | No (desktop) | No (desktop) | N/A |
| Multi-language | 5 languages | Limited | English | N/A |
| Pricing model | SaaS subscription | License + hardware | License (comes with tooling) | Free |
| Free trial | 14 days, no card | Demo on request | Demo on request | N/A |
| Setup time | <60 seconds | Minutes | Minutes | 30-120 minutes |
TKM CASKA 4.0
CASKA (Computer Aided Slitter Knife Assembly) is developed by TKM Group, a German manufacturer of slitter knives and tooling. It is the longest-established arbor setup software in the market.
Best for: Operations that already buy TKM tooling and want an integrated solution from their knife supplier. CASKA is typically bundled with TKM tooling purchases or sold as a separate license.
Strengths: Mature algorithm, backed by a major tooling manufacturer, deep integration with TKM's tool design software for custom tooling calculations.
Limitations: Desktop-only software (Windows), no web access for multi-site operations, tied to TKM's ecosystem, licensing model requires upfront investment. Version 4.0 was announced for spring 2025.
ANDRITZ ASKOedge
ASKOedge is developed by ANDRITZ Metals USA (formerly ASKO Inc.), another major slitter tooling manufacturer. It focuses specifically on clearance-control optimization.
Best for: Operations primarily concerned with edge quality optimization and clearance management, especially those already using ASKO tooling systems.
Strengths: Deep clearance calculation algorithms, backed by ANDRITZ's metallurgical expertise, well-suited for AHSS (Advanced High-Strength Steel) processing.
Limitations: Desktop software, focused on clearance rather than full arbor stack map generation from inventory, tied to the ASKO tooling ecosystem.
OptiStack Pro
OptiStack is a web-based SaaS application built by Maxwell Slitter Industries, a cutting tool manufacturer with 35+ years of slitting line experience.
Best for: Operations that need inventory-aware setups (using only parts actually in stock), shimless/fraction-kit workflows, and web-based access across multiple locations or devices.
Strengths: Strict inventory checking (never generates unbuildable setups), fraction kit mode for shimless operation, visual arbor diagrams, web-based with no installation, multi-language support (English, Spanish, Portuguese, Italian, Russian), transparent SaaS pricing with a free trial.
Limitations: Newer to market than CASKA or ASKOedge, smaller user base, no ERP integration yet (planned), no automated clearance optimization (you set clearance manually).
Spreadsheets / Manual Calculation
Best for: Operations with very few changeovers (1-2 per week) running the same slit patterns repeatedly.
Strengths: Free, familiar, no learning curve.
Limitations: Error-prone (especially for alternating engagement), no inventory checking, no visual verification, time-consuming (30-120 minutes per setup), knowledge locked in one person's head.
Which Should You Choose?
The right choice depends on your specific situation:
- If you already use TKM tooling exclusively and want integration with their tool design software → consider CASKA
- If edge quality on AHSS is your primary challenge and you use ASKO tooling → consider ASKOedge
- If you need inventory-aware setups that only use parts you actually have, shimless operation, or web-based access → try OptiStack Pro free for 14 days
- If you run fewer than 2 changeovers per week with the same patterns → spreadsheets may be sufficient, but consider our free calculator to save time
Regardless of which software you choose, the key is to stop relying on manual calculation for production setups. The cost of one bad setup (scrap, rework, quality claims) almost always exceeds the cost of proper software.