Mark the assembly contacts
Lay out the part labels against the assembly drawing. Identify the broad faces and edges that remain exposed, the areas covered by adjacent parts and the contacts used by the chosen assembly method. Do not decide what to coat from the surface area alone. Follow the adhesive, hardware and coating instructions for the contact areas in this particular build. The planner can exclude a whole face or edge, but it cannot model a masked strip within a selected surface. Record partial masking in the shop notes and keep the geometric approximation visible.
Approve the finish system on a sample
Use representative stock, edging and preparation for a test panel. Record the exact product and variant, appearance, application method, coverage basis and coat schedule. Check the result against the intended use and the product instructions. A numerical purchase estimate does not establish compatibility between stain and topcoat, or suitability for an interior drawer, floor or exterior project. Avoid setting a generic coat count simply because it is prefilled in the calculator. The example project is there to explain the controls.
Separate a quantity plan from a time plan
Drying before another coat, readiness for careful handling and full cure are different milestones. Obtain the actual timing and environmental requirements from the product instructions. Do not use the number of coats as an elapsed-time prediction. This planner deliberately leaves those milestones out of its quantity model: it cannot observe temperature, ventilation, film thickness or the condition of a surface. Write the release criteria on the shop traveler so the purchase list is not mistaken for a permission to assemble or use the finished item.
Run the five-point release review
First, confirm that every part row matches the approved finished dimensions and physical quantity. Second, compare each selected surface map with the drawing and check for missing edges or duplicate rows. Third, confirm the product stage on each row, including any front/back differences. Fourth, read the product label and confirm per-coat coverage, required coats, extra allowance, usable stock and package size. Fifth, review the test panel and document the handling and assembly criteria from the chosen system. Resolve any disagreement before placing the order.
Carry the estimate into the shop
Export the purchase CSV and a JSON project backup. The CSV is a reviewable snapshot with the units and assumptions included; the JSON restores the editable project in this tool. Importing a backup presents a replacement review before it changes the current browser draft. Keep a separate backup before clearing browser data or moving devices. Labels can carry a batch reference, finish colour or drawing location, but they should still identify the physical part without requiring a guess.
Learn from actual use
After the job, compare the planned product demand with usable stock consumed and new stock left over. Record what changed: an added coat, a missed back face, unusually absorbent stock, a different package size or practical application loss. Update the next job with measured evidence rather than changing the finished dimensions to force the purchase result. If the surfaces are curved, deeply profiled or only partially coated, move to a measured surface schedule that describes them instead of stretching the rectangular-panel model.
Product documentation
General Finishes: High Performance product instructions — The manufacturer distinguishes product application instructions, drying and curing. Use the exact system instructions to plan those milestones; the calculator estimates quantity only. Checked 2026-10-08.