How do you cut accurate angles in balsa wood?
Make a template from your plan, use a cutting guide or mitre box, and sand to the line. How to get matching angled ends on every member.
Updated · 1 min read
Short answer: get the angle off your full-size plan, cut it with a guide, and finish on a sanding block. Matching angles on every copy matter more than perfect numbers.
Steps
- Draw the plan full size so every angle is on paper. See step-by-step building.
- Make a template. Trace each angle onto a scrap of card, or onto a clear plastic sheet.
- Use a guide. A small mitre box for the angle you need, or two blocks glued to a base so the knife follows one face.
- Cut a bit long, with a sharp blade and light passes.
- Sand to the line on a block against a stop set to the same angle.
- Test against the plan. Lay the cut stick over the drawing and check the end.
Making several copies
Cut one, check it, and use it as the pattern for the rest, laying each new stick against it to mark. Cutting all your same-angle ends in one go makes them match.
Common problems
- Wandering cuts: a dull blade or too much pressure.
- Crushed edges: the blade is dull. Change it. See cutting without splintering.
- Gaps at the joint: sand and test again. See cutting joints by hand.