# Lecture notes global

transfer adhesive

Chamfer - helps aligning joints

filleting corners prevents stress on the corners. It gets more divided.

cardboard nice for prototyping, cheap

acrylic easy to cut and clear. very chemical and not renewable

first parameter is the thickness of the material

## Local lecture bas

everything is a circle or square or triangle. You can make anything with any primitive shapes. 

### OpenScad
Bas is teaching us how to use OpenScad

![alt text](../../assets/assets_week_3/image.jpg)
Everything needs to be within a function because otherwise it won't interact with eachother

If you place a # you can sort of debug and see where the shape is. Instead of blindly placing things

![alt text](../../assets/assets_week_3/image-1.jpg)

You can declare variables by name=value;

Example:
![alt text](../../assets/assets_week_3/image-2.jpg)


You can also do equations in openScad
![alt text](../../assets/assets_week_3/image-3.jpg)

The order of declaring variables matters. I found that out the hard way. because some variable wasn't working until I switched order.

Blender plugin to export to openscad