Workshop · WS-001
Handsaw bench hook
Brace a small workpiece against a bench edge for controlled hand sawing.
Editorial construction draft. Original digital diagrams; no physical build or load certification. Read dimensions, fit and use limits before making changes. US customary dimensions control; metric values are references.
Before marking and cutting
- US inches; feet where appropriate. Metric values are rounded references. Written inch values control.
- 3/4 in means measured 0.750 in actual thickness wherever used. Recalculate mating lengths for other sheet thicknesses; do not substitute nominal stock blindly.
Use limits
- For the bounded stated manual task. Do not install it on a powered machine or use it to replace a guard.
- No load, measurement-certification or protective-equipment claim.
Materials and cuts
| Part | Qty | Size to cut | Material |
|---|---|---|---|
| A Reference board | 1 | 12 × 8 × 3/4 in 304.8 × 203.2 × 19.05 mm | Sanded birch plywood with sound, void-free receiving edges. Measured actual thickness 3/4 in. |
| B Upper stop | 1 | 12 × 1 1/2 × 3/4 in 304.8 × 38.1 × 19.05 mm | Clear solid hard maple, straight grain along the listed length. Measured actual thickness 3/4 in. |
| C Underside bench lip | 1 | 12 × 1 1/2 × 3/4 in 304.8 × 38.1 × 19.05 mm | Clear solid hard maple, straight grain along the listed length. Measured actual thickness 3/4 in. |
Hardware and consumables
- 6 × Compatible wood screws. Selected length, pilots and locations are stated in the instructions; test on actual scrap.
Tools
- Rule with fractional inches
- Pencil or appropriate material marker
- Reliable square
- Saw suited to the specified stock
- Clamps
- Abrasive and dust-removal brush
- Drill with the specified bit and depth stop where needed
- Driver matching selected fasteners
Assembly
- Use a stable bench with a square front edge. This hook is for a handsaw only; choose a cutting position that never brings the blade toward the supporting hand.
- Cut A to 12 in / 304.8 mm by 8 in / 203.2 mm from flat measured 3/4 in stock. Mark one face UP and mark front-left X0 Y0; remove only the splinters, not the reference edges.
- Draw the centerline and attachment footprints from the part positions below. Measure from the reference faces each time; do not add a chain of rounded conversions.
- Cut B and C each 12 × 1 1/2 × 3/4 in. Label B TOP STOP and C BOTTOM LIP; do not install both on the same face.
- Clamp B on top of A at Y = 6 1/2–8 in, flush at X = 0 and 12 in. Its working face lies at Y = 6 1/2 in.
- Dry-fit and clamp the assembly on a stable surface. Check the intended article against the clearances before drilling or gluing; correct the layout on paper if it does not fit.
- From beneath A, drill three clearance/countersunk holes at X = 1, 6, 11 in and Y = 7 1/4 in. Pilot B while clamped. Fit three #8 × 1 1/4 in screws; 3/4 in crosses A and 1/2 in enters B.
- Ease exposed corners and all edges that the operator will touch. Remove dust and any projecting point; countersink only to a flush head.
- Turn A over and place C at Y = 0–1 1/2 in. Through the top of A, drill/pilot at X = 1, 6, 11 in and Y = 3/4 in; fit three identical screws into C.
- Clamp the lip against the bench edge. Put sacrificial scrap on A, against B, and check the intended saw stroke without cutting.
- Make a short trial cut in scrap with hands clear of the path. The saw may mark the sacrificial base; it must not strike a screw.
- Mark a screw-free cutting strip on the right end, X = 11 1/2–12 in. Keep later replacement screws outside this strip.
Checks
- Upper stop face at Y = 6 1/2 in; lower lip on the opposite face at Y = 0–1 1/2 in.
- Hook remains seated against the actual bench during a light trial; screws do not enter the marked cutting strip.
- Assembly is flat and free of splinters, exposed tips and loose parts.
- A second operator can repeat the intended light-duty operation without being coached.
Cleaning and maintenance
- Brush or wipe the unloaded assembly clean after use.
- Inspect attachment fit and fasteners before each new task.
- Replace a damaged contact surface; recheck the reference dimensions after repair.
Primary context
These sources inform the context and do not endorse the original construction design.