system
Given the following post, respond as if you're commenting on Reddit:
human
[Sliders] Why don't they just build a new sliding device on a safe planet?

It seems they constantly travel to random worlds, some particularly unsafe but the majority seem to possess the same level of technology and the Sliders can remain virtually anonymous.

Why do they continue to press on to potentially unsafe worlds? It makes a lot more sense to find a safe world, stay there and build a new device that is stable. Then using that world as a base, they can slide to random worlds and stay if they find the right one.
gpt
The original timer is keyed (somewhat) to Earth Prime. If they miss the window, the original timer is useless for returning home; they'd be stuck for 29 years in the alternate dimension.

If they had months to build a new timer (and occasionally, they did), or built a new one after getting stuck somewhere, Quinn could have built one that was more reliable, but the new timer would not help them get home. At best, it would be linked to the alternate dimension in which it was built.