Tool Sharpening, Reconditioning & Industrial Repair Services calculator

Coating Batch Size Calculator

Recoating is the final value-add in reconditioning — a PVD or CVD chamber lays down TiAlN, AlCrN, or similar coatings so a reground tool performs like new. Coating and production managers use this calculator to convert fixture capacity and available chamber runs into the number of good, sellable coated tools after accounting for chamber downtime and coating rejects. It matters because the coating chamber is a fixed-cost, batch asset — empty or under-yielding runs waste the most expensive step in the shop.

What this calculator does

  • Recoating is the final value-add in reconditioning — a PVD or CVD chamber lays down TiAlN, AlCrN, or similar coatings so a reground tool performs like new.
  • Use it when coating batch size in tool sharpening, reconditioning and industrial repair services is being asked to take on more work and you need to know if there is room.
  • It multiplies tools per coating run by available runs for gross capacity, then derates by chamber uptime and first-pass yield to give good output.

Formula used

  • Gross coating batch size capacity = units per cycle × available cycles
  • Good capacity = gross capacity × uptime × yield

Inputs explained

  • Tools loaded per coating run:
  • Coating runs available in the period:
  • PVD chamber uptime:
  • First-pass coating yield:

How to use the result

  • Use it when planning coating throughput for a shift, week, or campaign, or when deciding whether to add runs to hit a delivery number.
  • It assumes uptime and yield are stable and independent; a bad batch of adhesion failures or a chamber fault will pull actual good output well below the estimate.

Common questions

  • How do you calculate coating batch capacity? Multiply tools per run by available runs for gross capacity, then multiply by uptime and yield. At 4 tools/cycle, 480 cycles, 90% uptime, and 97% yield, good output is about 1,676 tools.
  • Why multiply by both uptime and yield? Uptime accounts for runs lost to chamber maintenance, pump-down, or faults; yield accounts for coated tools rejected for adhesion, color, or thickness. Both derate the gross number, and they stack multiplicatively.
  • What is a good PVD coating yield? Well-run reconditioning coating lines hold first-pass yield in the mid-90s percent; 97% is strong. Lower yields usually trace to inadequate pre-clean or edge prep before the tools ever reach the chamber.
  • How much does downtime cost in coating output? In the example, 10% downtime alone costs 192 tools of gross capacity before yield is even applied — chamber availability is the single biggest lever on coated output because the asset is batch-based and fixed-cost.
  • How do I increase good coated-tool output? Fill every fixture (tools per cycle), maximize chamber uptime with disciplined maintenance windows, and lift yield with better pre-clean and edge prep. Yield and uptime gains compound because they multiply.

Last reviewed 2026-05-12.