My 24236+24064 have arrived for the first modules. No one has demurred so the ayes have it. Road cross-section is now 60*10, edge margin for both C-Track and road is now 15mm.

I put glue down! And my genius modular system... doesn't work.

The track connectors don't have enough flex in them to decouple without forcing the track off the boards - and I'm left very confused. I've been assuming this would work based on the existence of the C-TRAK standard which must be able to decouple in order to have existed for - but based on this, I have no idea how it could. What do the MSCD in the Netherlands know, which I don't?

Right now I'm somewhat frustrated, and I'm re-evaluating Unitrack for this; which is 2-rail only and has another annoying compromise on LACK boards (10mm -> 15mm -> 40mm) - but is designed from the start to be modular, and also meets the "readily available worldwide" clause. Mainly - it disconnects the same way it connects, so there's no issue with it pulling the track off the board.

Edit: The obvious question is. "Is anybody else seriously invested in this"?

If not, then just scrapping CLACK in favour of a 2-rail-only Unitrack based design (LUCK) would be the simplest option, and I can re-use all my 3-rail C-Track for playing with Tri-ang stock that doesn't work on TRIX/KATO Code 83.

Sadly doesn't solve the problem, as now disconnecting the short-piece pulls the track up; instead of disconnecting the next board.

Again, that works - but if you're cutting the track and using traditional module joints - there's no value in C-Track. Just use Peco Code 83 and it'll be cheaper and prettier. Or; K-Track. Prettier; I don't know what K-Track pricing looks like. It also makes using IKEA shelves pointless - if you have to drill into the shelves and add alignment dowels and locking clamps - suddenly this is worse than just building a custom baseboard from laser cut parts!

The point of the idea was that it took no skill or effort, and no complexity to use. You just put it on a table, smoosh it together, and put trains on it.

I am really confused by the C-TRAK system being able to pull this off! I've emailed them to find out their secrets.

So far, no-one's claimed to be invested... can I take this as "EB421 is the only person who went out and bought shelves"? ;)

So T-TRAK doesn't do this. It uses the Kato bedding-track to hold everything in position, and relies on a solid table to make sure individual modules don't experience unnecessary tension.

CLACK came about because I tried to do Hex-TRAK in H0, decided it was too much work machining modules that large; and then looked at T-TRAK and tried to find an equivalent solution that I could reuse the Marklin track pieces I'd bought to test the H0x-TRAK concept; while not needing to build baseboards from scratch or spend $60 a pop on kits for them; which is what they cost in the UK.

I liked the idea of being mixed 2/3 rail, but I work solely in 2-rail so if the system doesn't work with Marklin track - so be it!