12 Sierras

12 Sierras is a furniture estimator for one-person woodworking shops. Start from the overall size of a piece and get the parts, the lumber order, and cutting layouts planned against the boards you own and the machines you have. KNOW WHAT A PROJECT TAKES Pick a form (dining table, bed, side table, bookcase, cabinet or dresser), enter rough dimensions, and 12 Sierras works out the cut list. Every part shows the arithmetic it came from, what it's made of, and whether it's a glue-up. • Joinery as an allowance: say how much length your joints add, whether tenons or dados, or cut to the shoulder for Dominoes, biscuits, dowels and pocket screws. • Show wood, hidden wood and sheet goods priced separately, so a walnut dresser isn't priced as walnut all the way down to the drawer boxes. • Lumber charged the way you buy it: by the quarter (4/4, 8/4…) at nominal thickness, with your waste factor. KNOW WHAT YOU OWN Keep your board rack in the app. 12 Sierras lays the cut list out on your real boards, splits wide parts into glue-up strips your jointer can actually flatten, and shows what's left. After the build, one tap updates the rack with what you used and the offcuts you kept. KNOW WHAT'S MISSING Whatever the rack can't cover becomes a buy list with thickness, width, minimum length and board feet. The Order view shows it in big numbers for the lumber-yard counter. CHECKED AGAINST YOUR SHOP Enter your jointer, planer, saws, clamps and door width. Every plan is checked against them: planer capacity, rip and crosscut limits, clamp count, and whether the finished piece fits through the door. BUILT FOR THE SHOP FLOOR • Works offline • Imperial fractions to 1/16", or metric • Fraction keys above the number pad • Share, copy or print any cut list • Back up everything to a file OPTIONAL AI DRAFTING For pieces the templates don't cover, connect your own Anthropic, OpenAI or Google account and describe what you're building. Drafted parts are checked against your dimensions and clearly marked. Nothing else in the app needs it. PRIVATE BY DESIGN No account, no ads, no tracking. Your projects, rack and shop profile stay on your iPhone. Estimates come from the dimensions you enter. Check every cut list against your own drawing and stock before cutting.