My mom offered to trade us two (exactly the same) twin beds for our queen with the idea that we can use a kit to convert them into a king.  We would love to get a little extra room if co-sleeping is going to be a long-term arrangement for us, and we think it will be.  Has anyone ever converted two twins into a king before?  How well did it work? Any recs on which product to buy to bridge the two mattresses?                
                BFP#1 11-26-10 MMC 1-13-11
BFP#2 6-8-11 Eleanor Beatrice born 2-15-12
BFP#3 9-4-13 Benjamin Lee born 4-28-14
 
        
Re: Converting two twin beds to a king?
I put 2 twin beds together, but I didn't use a kit (was a long time ago, did they even have kits then). It worked great, I had a foam topper and that just put that over the twin mattresses.
Hopefully someone has experience with the kits.
More Green For Less Green
We would be using two twins. DH is worried about them pushing apart, too. It looks like we will keep using our queen for now since we are all comfortable but keep this idea as a back-up.
Thanks for the input, all!
BFP#3 9-4-13 Benjamin Lee born 4-28-14
This is an easy fix. You can get buckle straps (I use them to hold my kayak on my car) and they will hold it super tight and never let go. You would probably need 3 of them. We're planning on doing this with 2 twins next week.
https://www.outdoorplay.com/NRS-Heavy-Duty-Kayak-Straps