Practical Workshop Skills and Project Work
Scope
This domain tests the order of work from drawing to finished, inspected article, and the habits that keep the job accurate.
Sequence of work
- Read the working drawing; check that all dimensions add up to the overall sizes.
- Write a cutting list with finished sizes and material, plus a rod or setting-out board.
- Select and check timber: straight grain, no knots or splits at joints, MC about 10–12%.
- Plane one face and one edge, mark face side and face edge, then bring to size, thicknessing last.
- Mark out from the face side and face edge only; gauge lines once, from a single reference.
- Cut joints, dry-fit, check square and diagonals, then glue up on a flat surface and re-check the diagonals before the glue sets.
- Clean up, sand, finish, and inspect against the drawing.
Accuracy
Work to ±0.5 mm on joinery, check with a try square and winding sticks, and compare diagonals to confirm a carcase is square. Keep tools sharp and the bench clear; return each tool after use.
Worked example
Making a small book rack: sides planed to size, housings gauged 6 mm deep, sawn with a tenon saw, chiselled and routed clean. Dry assembly shows a 2 mm difference in diagonals - re-cut the housing rather than forcing the joint, because cramping a skew carcase will not pull it square, it only strains the glue line.
Traps
Cutting every part before checking the first joint; marking from the end of a board instead of one datum; assembling on an uneven bench; sanding before the glue has cured; leaving the project report to the last day instead of recording each stage.