When I set off a 5t nuke too close to my spidertron, it of course got damaged. What also got damaged was the spidertron's legs. One, they should not be damaged since they don't have HP to my knowledge, and two, my bots can't repair it. Thankfully putting it in my inventory and back out fixed the spidertron leg damage.
Note: I had a spidertron mk2 from Spidertron Extended

Yeah, I've noticed spidertron legs taking damage. As far as I can tell it doesn't change anything.

I don't intend to do anything about this, as it isn't a major problem, just a graphical annoyance, and fixing it would impact performance.

Fixed in True Nukes version 0.3.19.

Yeah. I feel I've ended up delaying your requests for ages - sorry about that. It's been coincidental.

I'm just glad you decided to fix it anyways.

No problem.