By bonamore 08.04.2021

Thickness of thin walls

Small surfaces with a big width to height ratio are sensitive to vibration and this makes them especially difficult targets for precision machining

Small surfaces with a big width to height ratio are sensitive to vibration and this makes them especially difficult targets for precision machining. To reduce machining time, it is recommended to make the walls thicker and avoid any protruding parts with a width-to-height ratio of more than 4.

If the weighting factor is irrelevant, prefer thicker walls and solid profiles as these are more stable and thus easier to work with and less costly for the machine.

To prevent deformation or, in the worst-case scenario, breaking when machining thin walls, repeat path lines at a small cut depth. Since thin walls and surfaces are extremely susceptible to vibration, it is hard to ensure precise machining. This means machining details takes much longer and becomes much costlier.

To minimise cost:

  1. Design walls thicker than 0.8 mm (the thicker the better) and ensures individual access to each machining function.
  2. Try not to position holes and threads near the edge of details as this is usually where thin walls end up being positioned.
  3. Follow the above instructions even if you include holes in your design.