I would go with the sofa snap system. I have my upholsterer use it on all of our sectionals and it works great. I don't see another options, maybe some else has one. Could you use duct tape or heavy duty carpet tape. It would probably ruin the fabric underneath the sofa but would eliminate the need for drilling.

Go to homedepot and buy a large padded clamp (not heavy duty) get underneat and clamp the two pieces together. It wont be visible.

joel

Couple of c-clamps attached to the underside of the frames?

I would agree with Shawn. They make c-clamps in a large range of sizes. You could definitely find some small enough to be quite hidden. Not to mention this is probably the cheapest fix compared to how sturdy it will be.

All its feet on a rug (if you have one) should keep it together fairly well

How about these clamps?

http://www.irwin.com/irwin/consumer/jhtml/detail.jhtml?prodId=IrwinProd100029

Rotated correctly you shouldn't be able to see them unless you are laying on the floor.

Would discretely cable-tying (i.e. http://www.buycableties.com/) the adjoining legs together work? Cable ties can get pretty tight, and if hidden up at the top of the legs they'd probably not be visible?

Umm do they really move that far apart? floor surface too slippery? I've used those rubber grippy sticky pads for furniture before. Cheap, and they work pretty well.

Sofa snap is the type of hardware that is typically used in the industry for securing two pieces together. You could mount it to the under side of the frame and you wouldn't see it. Drilling into the frame to secure something like that wouldn't damage it. It only requires small screws.

I had a nearly identical sofa custom made and I've never had a problem with the pieces separating, even on my marble floor. I would give it a try for a while and if it still bothers you, try the clamps the others have suggested.

i would go zip ties. cheap easy, small and tight. i doubt it'll move that much at all and these babies are pretty darn strong.

go with the clamps, it is a good idea. u might have to cut the lining underneath to make it work correctly, but just a little. You could also just stick it on a rug, that tends to help

lots of good ideas on this previous AT post as well, asking the very same question...

http://www.apartmenttherapy.com/ny/seating-sofas-armchairs/good-questions-how-can-i-keep-the-sofa-and-chase-together-045535

rubber bumpers on the feet.

Two words... Duct Tape!

How heavy are the couches? My grandparents (well, now just my grandfather) have a few sectionals that have been in the same place for over 20 years now. They've never budged, even when I was young and used them as trampolines.

hmmm, what about some velcro, particularly if there were some kind of long piece that could be wrapped around itself.

zip ties would be cheap and easily removed and replaced!

Picture wire, twisted snug. Like zip ties, but a little less bulky.

I was the "asker" of the question that sniplet linked to.

I can say that sofa clamps are the way to go. Just required screwing them into the bottom of the sofa. Most sofa's (mine included) come with a extra wide wooden brace bit in the middle to screw to. Just feel around.

Mine came from Room & Board, but there were similar devices linked in the comments.

I would put down the extra bucks (they are not that expensive) and get a proper clamp rather then tieing them with wire (which could scratch the legs)

My parents have had sectionals all my life, and have never had a problem with them moving apart.

Your sectional did not come with hardware to link the pieces together for a good reason: it doesn't need it.

Plus, it is much easier to vacuum, clean up after a party, and hunt for things that fall underneath if you *can* move the components apart.

My free-standing sectional came with things that snap it together - they are fairly large and totally invisible.

I agree with trying it without anything and, if there's a problem, the clamps or plastic ties.

"rubber bumpers on the feet"

Agreed. That's what we use.

All of these comments will help. I would also be upset if GUS MODERN didn't think this through for their customers. At any price, who wants to duct tape or clamp a brand new sectional together?

Man, what a bummer! It IS beautiful, so congrats on your purchase. Have you tried getting suggestions from the company? Although, it sounds like they weren't much help to begin with.

That's a shame that they don't provide that, especially for the price. I could see a sectional not splitting apart on carpet or if you're fairly gentle with it, but in our house we have a Room and Board sectional (that yes, has connectors) and it sits on hardwood flooring with kids bounding on/off it. It always stays together, though obviously slides from time to time. I can't imagine what it would be like w/out that connector.

I got a huge heavy sectional and that sucker is always coming apart in the middle. Even when it's sitting on a rug. Every time somebody plops down it moves. The rubber things work well but it's hard to move around if you want to vacummn or sweep under it. Unfortunalty the way mine is made I can't clamp it but I like the padded clamp idea. When you want to unseparate just unclamp it.

My sectional sofa with a similar problem, but the structure is of a kind that I cannot use clamps.

What I'm going to do and recommend is to get this sort of plate with couple holes and just screw it, really.

http://www.etrailerparts.com.au/702224.jpg

Couple of those plates and small 3/15 mm screws will do the job.