The Yield Audit: Why '1kg In' Never Equals '1kg Out' (And How to Calculate the Gap)

In the early days of building Vercos, I fell into the same trap every maker does: I assumed my recipes were 100% efficient.

If a 3D print model said it weighed 200g in the slicer, I calculated my costs based on 200g of filament. If a candle recipe called for 16oz of wax, I assumed 16oz ended up in the jar.

It took a messy end-of-year inventory count to realize I was missing hundreds of dollars. The filament wasn't just in the prints; it was in the purge lines, the supports, and the 'spaghetti' of failed jobs. The wax wasn't just in the jars; it was stuck to the side of the pouring pot and evaporated during the scent-throw test.

In engineering, we don't call this 'bad luck.' We call it Yield Loss. If you aren’t calculating waste with mathematical precision, you aren’t running a business—you’re running a charity for your raw material suppliers.

The Lie of 1:1 Production

Most basic inventory trackers treat your business like a grocery list. You buy 10 units, you use 10 units. But manufacturing is a physical process, and physics demands a tax.

In a professional workshop, 'Yield' is the percentage of raw materials that actually makes it into the final, sellable product.

• 3D Printing: Your yield might be 85% after accounting for supports, skirts, and nozzle purges.
• Candle Making: Your yield might be 96% after accounting for the 'heel' left in the melting pot.
• Soap Making: Your yield changes over time. You might pour 5kg of 'soap,' but after a 6-week cure, you’ve lost 10% of that weight to water evaporation.

If you don't calculate these gaps, your Cost of Goods Sold (COGS) is a lie.

The Four Pillars of Waste

To stop the bleed, you have to categorize where your materials are actually going. At Vercos, we break waste down into four buckets:

1. Setup & Process Waste (The 'Cost of Doing Business')

This is the material required just to get the machine or process running.

• The Woodworker’s Sawdust Tax: The width of the saw blade (the kerf) turns expensive walnut into dust every time you make a cut.
• The Printer’s Purge: The filament used to prime the nozzle.
• The Soap Maker’s Residue: The butter and oils that stick to the whisk and the side of the lye bucket.

2. Geometry & Support Waste

Materials that are technically part of the 'build' but aren't part of the 'product.'

• 3D Printing Supports: You might use 30g of plastic just to hold up a 10g overhang.
• Candle Wicking: The 2 inches of wick you trim off every single candle and throw in the bin.

3. Quality & Failure Waste

This is the hardest to track but the most damaging to your margins.

• The 'Spaghetti' Factor: A 14-hour print that fails at hour 13.
• The Cracked Batch: A candle pour that frosts or pits so badly it can't be sold at full price.

4. Latent Waste (The Invisible Loss)

This is primarily for skincare and soap makers. It’s the weight loss that happens after production. If you sell a 4oz bar of soap that weighs 3.6oz by the time the customer gets it, you’ve miscalculated your yield and potentially your legal labeling requirements.

How to Calculate Your 'Yield Factor'

Stop trying to track every single gram of waste in real-time—it’ll drive you crazy. Instead, use the Yield Factor Formula.

Run a test batch of 10 units.

1. Total Input Weight: Weigh every raw material that goes into the process (Wax + Oil + Wicks).
2. Total Sellable Output Weight: Weigh the finished products ready for the shelf.
3. The Formula: (Sellable Output / Total Input) x 100 = Yield %

If you put 1000g in and get 920g of sellable product out, your Yield Factor is 92%.

To calculate your true cost, you divide your material cost by 0.92.

If your 'theoretical' cost is $10, your 'waste-adjusted' cost is actually $10.87. That $0.87 difference is the difference between a profitable year and a stressful one.

Engineering the Solution in Vercos ERP

We didn't build Vercos to be a passive list. We built it to be a fractional deduction engine.

When you set up a recipe in Vercos, we allow you to build in a Scrap Factor at the ingredient level. If you know that your CNC machine turns 15% of your aluminum stock into chips, you tell Vercos.

When you log a production run:

1. Vercos deducts the full amount of material from your inventory (including the scrap).
2. Vercos applies the actual cost of that scrap to the COGS of the finished item.
3. Your financial dashboard reflects the truth, not the 'best-case scenario.'

The Takeaway: Stop Being Optimistic

Optimism is great for designing new products. It is terminal for calculating margins.

As a maker, you are also a manufacturing engineer. Engineers plan for friction. They plan for heat loss. They plan for waste.

If you’re still using a spreadsheet that assumes 100% efficiency, you are hiding your own losses from yourself. It’s time to run a Yield Audit, find your Scrap Factor, and bake it into your pricing before your next production run.

Ready to move past spreadsheet chaos? Start your Vercos trial and let the engine handle the math while you handle the craft.