Building a wooden arch for stone

mcneil

I'm building a stone porch on front of house and have an arch over the door. Im wanting to know how I can get the correct arch so it's inline with my steel lintel over the door and also to support the weight of the stone while building it. Has anyone any tips on how this is done.

I'm thinking maybe get some ply and level it across the opening and try and trace it. One problem I might encounter this way is will I be able to get my hand up to finish of the top curve.

Even if I do manage to get trace this line correctly, when building the arch, how can I bend the timber around so it'll hold 200mm thickness of stone above it.


Any ideas of tips.

Bonzo Delaney

mcneil wrote: »

I'm building a stone porch on front of house and have an arch over the door. Im wanting to know how I can get the correct arch so it's inline with my steel lintel over the door and also to support the weight of the stone while building it. Has anyone any tips on how this is done.

I'm thinking maybe get some ply and level it across the opening and try and trace it. One problem I might encounter this way is will I be able to get my hand up to finish of the top curve.

Even if I do manage to get trace this line correctly, when building the arch, how can I bend the timber around so it'll hold 200mm thickness of stone above it.


Any ideas of tips.

Make up one of these and clad the top in 6 mm ply or 2x1lath https://detailsinthedecor.files.wordpress.com/2012/02/arch-formwork.jpg

mcneil

Bonzo Delaney wrote: »

Make up one of these and clad the top in 6 mm ply or 2x1s https://www.google.ie/url?sa=i&source=images&cd=&ved=0ahUKEwjXz_bmp8HOAhWNOsAKHbqXA8oQjB0IBg&url=https%3A%2F%2Fdetailsinthedecor.wordpress.com%2Fpage%2F7%2F&psig=AFQjCNHQ5rBpQ4gQdngBHAd_H18Fd4JHtA&ust=1471277963845420&rct=j

Not exactly what I want but very close to it. However ill take few tips from it. TY.

gutteruu

mcneil wrote: »

Even if I do manage to get trace this line correctly, when building the arch, how can I bend the timber around so it'll hold 200mm thickness of stone above it.


Any ideas of tips.

Drill some dowels into scrap wood in the curved shape you need. Bend ply around these, clamp and then use a few layers of thin ply glued together if you have to to get strength. Rough frame out inside of curve to finish.