About TwoCut DIY Tools

TwoCut operates this English DIY tool library and the linked Korean website-service home. Editorial and calculation review date: October 12, 2026. Code and drafts use AI assistance; this is not installer certification.

How calculations are verified

The library contains DIY material and layout calculators. Python models and JavaScript fixtures are compared for all 258 retained input presets in the original eight tools. Fence, deck and grout add nine independent hand-calculation cases and six distinct decision examples, with imperial/metric and package or cutting boundaries tested. Tests also cover independent hand calculations, unit conversions, invalid inputs and rounding boundaries. Local jsdom checks exercise live input and change events on generated pages. The sources and formulas are visible in each calculator; these tests cannot certify actual installation or material condition.

Why fewer example pages?

Dimension variants are comparisons inside each calculator. Separate editorial examples address different decisions: opening placement, boundary conditions, product fixings, overlap and pins, miter reference edges, thickness and density, physical wallpaper labels, and kerf at a stock boundary.

There are no fabricated qualifications, measured installation trials or customer performance claims. Report a reproducible calculation issue.

Choose a model that fits the purchase

A useful estimate starts with the question being answered. A sheet-area calculation is a quantity budget; it does not show whether every required rectangle can be cut from those sheets. A linear trim total does not allocate long wall runs to individual stock lengths. A bag or carton estimate rounds to whole packages after applying the stated coverage and allowance. Read the method and worked decision beside the relevant tool before treating the final number as an order.

From a result to a checked material list

Measure the actual job and the material being supplied. Keep nominal dimensions separate from measured widths, record the units, and compare the calculator's coverage or density input with the current label. Repeat the calculation when a product changes. Retain your own sketch and purchase list: these tools do not provide a project account or a saved specification. For installation spacing, safety requirements and structural decisions, consult the manufacturer's instructions and an appropriately qualified local professional.

Editorial scope and corrections

The linked guides explain measurement, rounding and common planning mistakes. Worked examples are mathematical scenarios, not customer projects or field test results. External references help readers check product context; a link does not imply endorsement or that a supplier has approved an estimate. Use the contact page to report a reproducible arithmetic or wording problem, including the tool address and the inputs needed to reproduce it.