Loops Versus Interpolation
Maybe not the same, but an answer to my experience in making a convoybelt. The intention was to create a production line with an energy cell with twenty frames. I have noticed that the method that uses darkplaces is different from fitzquake.
I animated one cell/1frame, going to the half part, then hide the cell under the convoybelt, and then sweeping it up after the other half part was gone.
The convoybelt went easy, as it is a straight line.
The claw made an angle , so I had to hide it in three frames before the next row.
When I finally got the animation right, the interpolation was discussed.
After a lot of sliding and fitting I finally got the series running, but then I realized that each engine applies its own way of "turning".
here are the model versions I used.