Crystal Madrilejos

Design & Creative

On Creativity, On Family, Uncategorized

DIY Co-Sleeper Guide Coming Soon…

Ever since we posted about our co-sleeper, over the past year we’ve been receiving emails from readers looking to build something similar. Some people have even asked if we had thought about making them and selling them. We don’t have any plans of selling them for two reasons:

1. It doesn’t feel right. We based our co-sleeper on the Culla Belly design and it doesn’t feel like it’s our idea to sell.

– and –

2. Ideally, every one we make would have to be custom fitted to the bed it’s going to attach to and to the baby it will hold. It’s just not a construction that lends itself to mass production (at least with the materials and methods we are using). Maybe that’s why the Culla Belly has yet to be produced.

With that said, we are in the process of trying to put together a guide of sorts on how to make one yourself. It won’t contain any specific dimensions because everyone’s bed set up is a bit different. But the guide will lay out the things to consider and the options you have when building it yourself. Hopefully we’ll be able to get this together in a timely manner!

One last note. We are happy to share our process and make recommendations, but in the end it will be up to you to make sure it’s safe and secure for your baby.

Stay tuned…


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  1. Stephanie Leary - November 25, 2011 3:00 am

    I'm so glad to have found someone working on this! I love the Culla Belly design, and have been disappointed in all the alternatives I've found online.

    I'm sure you're incredibly busy at this time of year, but if you have even some partial specs you could share, I'd be so grateful. My husband loves woodworking, and our baby is due in a couple of weeks, so we're

  2. Andrew and Crystal - December 9, 2011 4:10 pm

    Hi Stephanie!
    Sorry, we're just getting back to you! I just saw this comment today. We were away on vacation. We've been getting a lot of requests with info on the co-sleeper. Unfortunately, we haven't had a chance to put together our specs but this is some info that we've shared with other people who wanted more details:

    1.) We used Poplar. It's nice, on the

  3. Mary Jackson - May 6, 2012 4:25 am

    Did you guys ever make the tutorial? I've been wanting the Culla for my next baby and now I'm 30 weeks. My friend just found this link for me.
    If you don't have time soon to write it all out, can you suggest a way to make it secure with a metal bed frame and mattress?

  4. Andrew and Crystal - June 6, 2012 3:31 pm

    Hi Mary,
    Unfortunately, we don't have the tutorial as we had hoped. If you want to email us pictures of what the frame of your bed looks like (under the mattress) it might help us give some suggestions. We have two boards that extend from the co-sleeper, under our matress and we have those two boards bolted down to our bed frame. Our bed frame is a platform bed made from two heavy duty

  5. Felipe Cárcamo - August 25, 2013 11:13 am

    Es muy bueno su proyecto,y me ha inspirado para hacer mi proyecto de titulo para terminar mi carrera en la universidad, he leído con atención sus post y según mi investigación es muy difícil encontrar estandarizar para ser producido en masa, debido a que existen muchos tipos de cama (box spring , camas americanas , hechas con pallets , etc)y justamente lo que mas me ha costado es lograr afirmar

  6. fay - November 29, 2013 2:48 pm

    hey :)

    Love the design..
    Seriously considering building a co-sleeper. I was just wondering, the slats that fit under the mattress, how much did they lift the mattress up off the base and if so did they hurt your back at all?


    • Andrew and Crystal - December 3, 2013 3:03 pm

      Thank you! We had the co-sleeper bolted to the bed frame, so the weight of the co-sleeper didn't push the mattress up. The boards themselves were 3/4" and I didn't notice them at all.

  7. Anonymous - November 30, 2013 10:00 pm

    I love this design and your approach to constructing it. We are pregnant with twins and are designing a similar co-sleeper. Just curious if you have any thoughts on width dimensions for 2 babies versus 1. The picture with Q in it seems like there's a fair bit of space width wise. I was thinking about only increasing the width from 16" to 24". I'm just interested to see if

    • Andrew and Crystal - December 3, 2013 3:12 pm

      Hi Annie,
      Thank you and congratulations on your twins! There was a lot of space width-wise and would accommodate two newborns easily since they don't move much, if at all. But they probably wouldn't be able to both be in there up to 3-months at 16", I don't think. My babies started to flail their arms and move quite a bit by then.

      I think you could easily make it


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