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Author Topic: Curved stair  (Read 2196 times)
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Rob-GB

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« on: October 25, 2011, 02:19 PM »

The architects vision.



The means to the end require formers to build around, for both inner and outer strings. This is for the inner with the smallest radius.



I made two veneers of pine 3.8mm thick to wrap around the core of solid and staved pine components all glued with Cascamite, the battens are screwed to the whole thing to keep it “clamped”.



The outer was formed in a similar manner but from 8mm flexi ply, I then cut all the tread and riser apertures with a combination of the Trion and TS55 with a little fettling from a Jap saw and 2” chisel…my fault I should of ordered some more Festool blades for the Trion.  Embarassed Then I started to fit treads and risers…



It took a while but I got there…



The shame of it is the sides will be covered in plasterboard (drywall) and the rest in carpet! Sad
Oh well, kept me occupied for a few days.
 Cheers for looking.
Rob.
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bellchippy

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« Reply #1 on: October 25, 2011, 02:42 PM »

Rob

Looks great, how do you find using MDF for treads and risers, does it split the tread when you screw the the riser to the tread. What is the thickness of the strings, And how did you work out how thick the strings should be.
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nydesign

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« Reply #2 on: October 25, 2011, 05:23 PM »

That's really impressive! I sort of get a headache trying to figure out how you calculated all that  Huh?!
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rookie08

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« Reply #3 on: October 25, 2011, 06:29 PM »

Very nice!  thanks for sharing!
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jmbfestool

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« Reply #4 on: October 25, 2011, 06:34 PM »

 Scared nice!   Very impressed! 

I know anything curved is a pain and these curved stairs would of been a head scratcher  I'm Sure!


Nice!



Jmb
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Rob-GB

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« Reply #5 on: October 26, 2011, 12:54 AM »

Rob

Looks great, how do you find using MDF for treads and risers, does it split the tread when you screw the the riser to the tread. What is the thickness of the strings, And how did you work out how thick the strings should be.

Always use the best quality MDF you can buy i.e. not the stuff that goes all fluffy when cut, min 25mm thick for treads. Pine string is 38mm flexi ply one 42mm. Lastly, from experience mostly.

Quote from: nydesign
That's really impressive! I sort of get a headache trying to figure out how you calculated all that

I draw everything in Autocad first and take it from there.

Thanks rookie08.

 
Quote from: jmbfestool
nice!   Very impressed! 

I know anything curved is a pain and these curved stairs would of been a head scratcher  I'm Sure!

Pain! no! It's good fun and what I love about this job. Anything curved generally incurrs greater costs though due to added wastage and set up costs it entails, getting some customers to understand that fact is often harder than the project! Wink

Thanks for all your kind remarks,
Rob.


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Tim Raleigh

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« Reply #6 on: October 26, 2011, 09:51 AM »

Looks much better than the architects drawing. I like how the risers angle back, this should create a nice shadow line when installed.
Your stairs look slightly wider than the drawing, are they? 
I know it's not your design but the height of the stair walls/railings in the drawing make the stairs look like a tunnel.
Tim
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nydesign

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« Reply #7 on: October 26, 2011, 12:46 PM »

This is OT but what's the cool looking machine behind the stairs in the last photo?  Cool
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Rob-GB

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« Reply #8 on: October 26, 2011, 01:46 PM »

Looks much better than the architects drawing. I like how the risers angle back, this should create a nice shadow line when installed.
Your stairs look slightly wider than the drawing, are they? 
I know it's not your design but the height of the stair walls/railings in the drawing make the stairs look like a tunnel.
Tim

Er! No actually, they are slimmer by two outside skins of gyproc/drywall....but you got me worried just then and I had to review the drawing Eek! Grin
We had renders of another job that looked even more claustrophobic but it seems to be the in thing at the moment. I am sure in the whole context of the build the design will be a natural fit, from the drawings I have seen and our site survey it will be a light and airy home with some nice modern features.

Cheers, Rob.
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"A $2 guppy swims......" Deke
Rob-GB

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Location: Kent, UK.
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Posts: 783



« Reply #9 on: October 26, 2011, 01:56 PM »

This is OT but what's the cool looking machine behind the stairs in the last photo?  Cool

That is a four sider, it is alledged that it will plane, thickness and spit out perfectly square and micrometer perfect dimensioned lengths of wood.....which it does most of the time until you need to replcate something you put through that morning before someone used it on another project..then  Doh! Beating a dead horse Bite your tongue useful bit of kit 98% of the time  Grin

Rob.
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Problem? No such thing! Only a solution waiting to be found:- RJ

"A $2 guppy swims......" Deke
mattfc

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Location: Hertfordshire, UK
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« Reply #10 on: October 27, 2011, 07:10 AM »

Great work Rob, I love working with curves and the challenges they throw up!

I got this book which is quite interesting
http://www.amazon.co.uk/Building-Stairs-Pros-Kevin-Ireton/dp/1561586536/ref=sr_1_4?ie=UTF8&qid=1319713693&sr=8-4


I was also from this book that I saw this product for making bent handrails:
http://www.gerberwood.com/bentrail.html

Have you seen anything like this in the UK
Cheers Matt
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Rob-GB

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« Reply #11 on: October 27, 2011, 01:32 PM »

Hi Matt, firstly thank you for your kind comment, next, not seen anything marketed as such, but do know it can be done using a set of matching spindle cutters, and does not need to be a shown in the example. The technique has it's uses but does involve a fair amount of sanding and a lot of glue lines (that may not suit every client) in some situations it does negate the old short grain issues though.
It is also a short step away from the old bundled dowel rods method of forming a handrail, something I would love to see an example of outside of a book. Grin

Rob.
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Problem? No such thing! Only a solution waiting to be found:- RJ

"A $2 guppy swims......" Deke
Tim Raleigh

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« Reply #12 on: October 27, 2011, 01:50 PM »

...but you got me worried just then and I had to review the drawing Eek! Grin

Sorry about that didn't mean to scare you...my own bias.
I hate that sinking feeling when I think something might be the wrong size...it's nice to find out that it's right when you check though.
Tim
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