puncture drill

... here's a different idea: looking for data material that was destroyed - I just fished out a model in the kitchen that fits - as a pattern! we need for our multifunction vehicle https://grabcad.com/library/vehicle-for-universal-use-1 a puncture drill with which we want to drill a hole, so to speak - for soil samples - but also have an analyzer in it: we need a nested drill - in the middle of which we have provided a water jet cutter - starting from the middle, as a second element an archimedean screw for the removal of overburden, on which our analyzer analyzes both solid and dissolved sedimentation. We also need a double drill - two outer rings that we want to rotate against each other. here i have first recorded the simple construct of an existing sample, used by a kitchen device .... as an an example! The development of the puncture drill is ongoing: but it is part of an overall concept, on the basis of which, for example, the individual harvesting of rows of cabbage types, including turnips, which is required in the breadth of our vehicle! on my trip to japan i saw how japanese - with a field that they had completely occupied with rows of seeds - the ripe cabbages - without paths, for machines simply and simply harvested from one side. the vehicle width - it was a small tracked vehicle, like a pedestal for a mini-excavator - comprised just 4 rows of narrow cabbages. in principle it is sufficient if there is such a narrow field in a non-flat location. we have a vehicle width of just over 1.5 meters. but we also want to set as narrowly as in japan: because we generally want to protect soils from water evaporation - and because we set tightly - other, undesirable plants leave no room for development! In addition, an existing field can be used better - and the soil structure also develops more positively. So that's what we want to do: there are a lot of stimuli - yes, and also limitations in the project: as I said, we want to plant the vehicle - harvest all of th