Neither is really "high maintenance" but if I had to choose one, I would say free weights because you have to take the weight off and on to adjust, as opposed to machine weights, all you need to do is adjust the pin to get a heavier weight.
Machine weights require little or no maintenance at all.
Most camp stoves require little maintenance. Usually they just require you to oil the pump cup every six months and clean up the food spills on the stove. Basic cleaning of the camp stove is the most important maintenance needed to make your stove last.
Yes you need your own weights for the videos for the arm lifting, or any one of the videos that require weights.
It does not require regular maintenance but some occassional maintenance will help keep the steam cleaner working at it's best.
Sure, not all exercises require a bar. Using free weights with built-in handles give you a variety of options and exercises.
Most solar panels are guaranteed for about 20 years. They require no maintenance apart from a cleaning occasionally to remove dust, debris and bird contributions.
All organizations require some form of maintenance, however, not all organizations require a maintenance department. Maintenance does not necessarily have its own department, it can be a function of some larger department.
Different applications and engines require different weights of oil to operate properly and prevent engine wear. Therefore different weights of oil are produced.
You don't need to "do" weights, but most boxers do some strength training with weights!
Some examples of peripheral devices that require regular maintenance are scanners, printers, speakers, and disk drives.
Yes, glass top dining tables do require a lot of maintenance. They need to be sprayed with Windex almost everyday.
The Deadweight Gauge is the most accurate instrument available for the pressure measurement. Repeatable readings with accuracies of 0.1%. 0.05% and 0.02% of measured pressure are obtainable. The device does not require recalibration unless the components have excessive wear of weights. It can be easily transported and set up in the field, requires minimum maintenance and is simple to operate.