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Medium Operations

Roll'n Grind

#Manufacturing

Practice this intermediate operations case interview question in the Manufacturing sector. Includes detailed problem prompt, clarifying questions, structured framework, and expert recommendation. Part of ProHub's 835+ consulting case library.

ProHub Comment

This is a manufacturing operations case requiring capacity analysis and root cause identification. The candidate must synthesize quantitative data (capacity calculations) with qualitative judgment to identify summer bottlenecks and propose cost-effective solutions that balance financial prudence with operational constraints.

Estimated Time 26 minutes
Difficulty Medium
Source Duke
19 / 100
Your client is Roll ’n Grind (RNG), a manufacturing company that specializes in industrial roll grinding and servicing. The company prides itself on its strong reputation and commitment to customer service, but recently its clients have raised numerous complaints about on-time delivery of their rolls. The CEO has asked you find out what RNG should do to fix delivery time in order to maintain its reputation and client retention rates.

Clarifying Information

  1. Client/Company information: Roll ’n Grind currently operates four plants in the eastern United States but serve a global client base. They are a privately held company that has been in business over 50 years.
  2. Industry/Competition information: N/A
  3. Product information: RNG manufactures large, metal rolls that are used by many industries for processing products, such as paper, paint, steel, textiles, and rubber. The rolls’ measurements must be extremely precise – up to a twentieth of an inch in accuracy – and require servicing to maintain these requirements over time.
  4. Value Chain/Revenue information: RNG’s revenue streams include manufacturing new rolls and servicing rolls in use (which are shipped back to RNG for service). RNG has experienced customer complaints for both new and serviced rolls.
Mock Interview
Interviewer

Your client is Roll 'n Grind (RNG), a manufacturing company that specializes in industrial roll grinding and servicing. The company prides itself on its strong reputation and commitment to customer service, but recently its clients have raised numerous complaints about on-time delivery of their rolls. The CEO has asked you find out what RNG should do to fix delivery time in order to maintain its reputation and client retention rates.

You

Thanks. Before analyzing, I'd like to clarify a few key questions...

Interviewer

Good question. Let me provide some background information...

You

Based on this, I suggest analyzing from these dimensions...

AI Score
Structure Analysis Communication Business Sense Quantitative
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Roll ’n Grind faces on-time delivery delays despite strong reputation. Analysis reveals the company operates at capacity limits during summer months for its servicing business (24 rolls/month capacity vs. 24 rolls actual volume). The solution involves renting temporary space for $37,000 during peak seasons rather than a more expensive alternative, with consideration for risks and ROI.

Key Insights:

  1. Capacity analysis is critical: calculate available production time (30 days/month) divided by average time per roll to determine true bottleneck
  2. Distinguish between manufacturing (8 days/roll average, 15 rolls/month capacity) and servicing (5 days/roll average, 24 rolls/month capacity) as separate constraints
  3. Summer months reveal the constraint: volume reaches maximum capacity exactly when demand peaks, explaining delivery delays
  4. Cost-benefit analysis of solutions: Option A ($37,000 for 4 months) is more financially prudent than Option B ($43,000) despite higher per-job fees
  5. Strong recommendations address both immediate relief (renting space) and longer-term improvements (forecasting, customer incentives, communication transparency)

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