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Gut feeling is that I agree with ETV that vertical slats will eventually stick in the bottom slot and that some sort of track system where each slat is hanging on a low friction support would help.
A taught length of roller chain with slats hooked onto the links?

Another more complex method might be to rig up an equivalent of a drawing board parallel motion but attached to the end slats at the top and bottom with springs to keep it in tension all the time. Not thought this through fully (that's for your to do !!) an there might be some mechanical clash if you are proposing two such doors. Although (thinking on my feet here) you might well be able to link them as a pair to open together - like corded curtains.
Vertical tambour would be a whole lot easier with gravity on your side. I've done a cloth backed one with counterbalance springs that works quite well but needs a slightly different spring system to balance the door at all positions. Maybe one day?......

Bob

<blockquote data-quote="9fingers" data-source="post: 647884" data-attributes="member: 1038">Gut feeling is that I agree with ETV that vertical slats will eventually stick in the bottom slot and that some sort of track system where each slat is hanging on a low friction support would help.A taught length of roller chain with slats hooked onto the links?Another more complex method might be to rig up an equivalent of a drawing board parallel motion but attached to the end slats at the top and bottom with springs to keep it in tension all the time. Not thought this through fully (that&#039;s for your to do !!) an there might be some mechanical clash if you are proposing two such doors. Although (thinking on my feet here) you might well be able to link them as a pair to open together - like corded curtains.Vertical tambour would be a whole lot easier with gravity on your side. I&#039;ve done a cloth backed one with counterbalance springs that works quite well but needs a slightly different spring system to balance the door at all positions. Maybe one day?......Bob</blockquote>

[QUOTE="9fingers, post: 647884, member: 1038"] Gut feeling is that I agree with ETV that vertical slats will eventually stick in the bottom slot and that some sort of track system where each slat is hanging on a low friction support would help. A taught length of roller chain with slats hooked onto the links? Another more complex method might be to rig up an equivalent of a drawing board parallel motion but attached to the end slats at the top and bottom with springs to keep it in tension all the time. Not thought this through fully (that's for your to do !!) an there might be some mechanical clash if you are proposing two such doors. Although (thinking on my feet here) you might well be able to link them as a pair to open together - like corded curtains. Vertical tambour would be a whole lot easier with gravity on your side. I've done a cloth backed one with counterbalance springs that works quite well but needs a slightly different spring system to balance the door at all positions. Maybe one day?...... Bob [/QUOTE]

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