Aiaya, I know HK doesn't have a DIY culture but you have to know your tools. There are two distinctive tools shown in that report by cute_manager.
The green tool is your dildo drill. I can imagine it will be very painful as it is spins. Watch those rpms or else you will get friction burns.
The red tool is a your dildo reciprocating saw. Unlike the dildo drill which spins along the long axis, the dildo instead will stroke in-and-out like a saw. This tool is much better preferred, I think, as you will not have constant contact between dildo and ur ass. Also I think the speed can be better controlled.
Because each tool is specialized in one motion, the handler will get very tired switching between drill-drill baby, to stroke-stroke baby, back to drill-drill, and so on. Those tools are not light. Best thing is to have the handler use the plain old dildo and manipulate the motions (drill, stroke, jiggle) by hand so she can work longer.