Calculus tools: Disc and Shell Method visual aid

thingiverse

These are printed separately. The disc must be printed with supports as the discs are printed with separation. The discs have holes in them just so they align, when using them as a visual aide, explain that there shouldn't be a hole (otherwise it'd be a washer method) when explaining the volume of the disc. The shell method has a small thin disc connecting all the shells, which you can break and make them all individual. Some cleaning needs to be done since they are all printed together (and not individually)