Industry-standard waste percentages for 20 common maker materials — feed into the True Product COGS calc for honest pricing.
Without waste factor
Recommended waste buffer
Mix cups, sticks, drips, test pours
22%
Amount per project with buffer
0.61
Projects per purchase
1.6
Material cost per project
$30.50
Waste is the difference between what you buy and what ends up in the finished product. It kills margin if you forget it. This calculator gives you the industry-standard buffer for 20 common maker materials — plug into the True Product COGS calculator.
Use the lower end (3-8%) for precise liquid ingredients and beads; the high end (20-25%) for resin, wood cut from rough, leather, and meat — anything where you're working around defects or sticky residue.
buffered_amount = raw_amount × (1 + waste_%)
True Product COGS (No-BS)
The real cost to make and sell one unit — materials with wastage, packaging, labor with burden, overhead, payment + platform fees, shipping absorbed, income + self-employment taxes. All in.
Resin Project Cost
Epoxy resin volume, Part A/B split, and total cost — with deep-pour exotherm warning for 1:1 mixes over 2 inches.
Packaging Cost Per Unit
Sum the real packaging stack — box, label, stickers, tissue, mailer, void fill, tape, ship label — into a single per-unit cost.