Stacking Doors That Open Together
From the original questioner:
That is what we do now, but there are is the issue of sizing the panels asymmetrically to have the middle rail(s) line up with adjacent doors. This mostly occurs with a pantry next to a fridge where we want the lower rail to align with the adjacent base cabinet and the upper pantry door to align with the fridge upper adjacent to the other side. We have been making the long door with custom placement of the middle rail but it is a lot of work to lay out and subject to error.
From contributor X:
If you are stuck on the idea of joining two doors together you may want to consider using Domino's. They would be plenty strong and invisible.
From contributor N:
I've used a plastic shelf pin for a 5mm hole before and it works extremely well - you can always pull them out easily. I guess a smooth dowel would work too.
From contributor P:
Iím dealing with the same problem myself right now. I remember some company made a 5 mm dowel just for that purpose. It had a collar so it wouldn't just fall into a hole drilled too deep. The current job needs rtf doors on MDF and I don't trust the pin. The pin worked well for wood doors but I haven't used any for decades and can't find them.
From contributor D:
Hafele has barbed connector pins and spacers - 267.23.900/267.23.093. They work, but itís not a very solid/rigid connection - spacing them a few inches apart might help with that.
From contributor Z:
We use dowels and an edge boring jig. Itís stronger than a biscuit and quick and accurate (3/8" dowel 2" long). We usually stain it the same color as the doors when there is an intentional door reveal. We will also use a spline that is continuous and stained as well. We use a biscuit machine to cut the spline slot in each door, join together, leaving the appropriate reveal.
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