Workshop project estimate

List the work that is easy to miss

Preparation, finishing, assembly, and inspection can matter as much as cutting or printing. Give them their own task rows where useful. Enter purchased parts and consumables with consistent quantities and unit prices. Do not count the same setup both as a separate task and inside every piece time.

Budget days are not a scheduled completion date

The working-hours-per-day setting converts total effort into an equivalent number of workdays. It does not model dependencies, parallel work, delivery delays, or machine availability. Contingency is an explicit cost allowance, not a correction for omitted tasks or a guaranteed maximum price.

Separating setup from repeated effort

For a task with half an hour of setup and 0.1 hour per piece, ten pieces require 1.5 hours of effort in the model. Twenty pieces require 2.5 hours, not three hours, because setup is counted once. Use separate rows where tasks have different labor rates or where a second setup is genuinely required.

Material rows multiply quantity by unit cost, so verify whether the unit is one sheet, one meter, one kilogram, or one purchased assembly. A contingency percentage applies to the subtotal as a budget allowance; it does not add missing hours to the task list. If elapsed time includes drying, curing, unattended machining, or waiting for delivery, distinguish that from hands-on effort when interpreting the estimate. The working-days result is equivalent effort divided by the entered daily hours, not a dependency-aware schedule. Review the largest cost and time contributors before refining minor entries, and keep the estimate's scope consistent when comparing it with the finished job.

Formula

Task effort = setup + time per piece × quantity. Budget = (materials + labor) × (1 + contingency).