if you want a cube button, to activate something that stays on, after the cube is removed from the button, (eg senario: you 3 launched from faith plate only need to briefly hit button).
you get the button to activate a laser that hits a relay, that activates another laser, that hits the same relay. the relay activates whatever the button originaly would have.
if I later wan't to turn it off, activate a panel, to break the laser beam, that is hiting the relay.
(only needs to be brief) example in following map, based on 1 of geneosis called infinity:
reflector cube-lasers-infinity
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=105482271

thankyou
some good gates.
the alternating funel polarity is drawing us towards the funel.
this can be solved, by increasing the speed of alternation.
I have an example of this in the 2nd chamber of my map:
simple turret problem 7- choose your buttons wisely
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=104514250
I never thought or slicing the light bridge, as you do here.

Well the map I linked is not one of mines ;) I just played it recently ^^

The laser cube on the moving platform is very stable - it took me a while to perfect it, but basically so long as the cube is pushed against a 90 degree panel by an excursion funnel it will stay on the track platform. And like you said make a little ‘hop’ that doesn't affect the cubes position even after a period of time (unless Valve go ahead and change the physics of Portal 2 again! I've not heard anymore off Valve about the gel vs. excursion funnel issue yet!)

I will check out your map when I have time thanks again :)

Oh and about your laser track timer, I don't know if you saw this map but this is basically the same mechanism X)

Liked the basket timer and the laser cube on a moving platform ^^ I would again use a funnel to be sure the cibe will not fait, but it seems that the hop when the platform change direction don't affect the orientation of the cube ;)

Nice to use the laser cube circle as a timer ^^ But that will also probably work with any other cube ;)

Thanks again for the references!

Map Creator Tools +1 :p