Asteroid Bone Saw

There's a possible solution to reducing the damages & threat of potential asteroid strikes that I've never seen in print or heard discussed since Carl was whisked away from us all decades ago.  

Many years ago I had nightmares for some months about asteroid strikes after those two collision movies came out. As a onetime aerospace engineer, I tried to think of ways to break the problem down into smaller, manageable pieces when I had trouble falling asleep. Unfortunately, the only practical solutions I could think of need years of effort to accomplish due to the astronomical size of the problem. Luckily, the JWST is now on duty searching the infra red band for distant debris that appear to grow larger during their fall around the sun.

The simplest solution uses today's tech to construct an array of independent kilometer-sized reflective Solar Power Satellites at one of Earth's 5 LaGrange points. It should be simple to scale up the output by adding one or more simultaneously while not affecting those already in service. Some power wb devoted to electric motors that provide angular momentum to steer the beam of reflected solar light at an approaching threat. The additional sunlight from multiple SPSs would increase outgassing to deflect its' orbit or perhaps affect the rotation by shifting the center of gravity to help it spin apart. 

An array constructed at Venus could produce beams w/ twice the intensity of those near earth. SPS would have a greater effect on Icy comets that cb vaporized at a distance. SPSs around Mars cb used on the asteroid belt. When not focused on a threat less than 20 years away, The mirrors could target whatever earth crossing threats are within their effective range. This offers long term, low fuel requirements compared to the tight belt solution that needs to be implemented while the threat is as far away as posssible

It's assumed that megawatts can be made available by harnessing solar or nuclear power on or near the surface of the asteroid. It's assumed thousands of giant interchangable links could be launched to form a ring around the "waist" surface of the asteroid threat. The links are collected from where they "crash-landed" and assembled into an endless chain that can be pulled over the surface and thru fissures by motors that are embedded where they provide torque when powered. Not much different than dredging waterways. 

More power & motors means more cutting torque. When a link breaks or loses its' edge, a replacement is located nearby and quickly installed by robots or humans who work there. Simple tools and mass produced parts sb all they require to keep things running smoothly on schedule. Several motors cb distributed to pull on different parts of the same chain independently if a bit of slack is allowed near each. Small debris cb gathered in nets and disposed of by a nuclear fireball that vaporizes the solid material in an explosion.

Questions Welcome

BSky post to my favorite living author

Have any space experts you know ever considered a giant bone saw chain wrapped around an astronomical threat assembled from thousands of giant interchangable cutting links that can be pulled into the curvature?

Neil DG did not respond when I mentiioned it in a response some weeks ago