Bay Window - Windowsill

[Sando8901]

Hello

I'm looking at replacing an old water/condensation damaged MDF type windowsill in our front room. Its started to warp and the edges between the joins are lifting. It is in a curved bay window though.

I've replaced a few straightforward rectangular sills with pine furniture boards before, i.e. all 90deg cuts but this one has got me scratching my head.

Bearing in mind I'm no joiner or carpenter, what would be the best way to measure up the angles? I would need to cut four pieces of wood and join them up into a semicircular shape.

Thanks

 

[crank39]

The most proffesional way and probably the most expensive is to use a winklefix and a sliding mitre saw with a decent width capacity.

Or the cheap way which is not really the wrong way is to measure each segment of the bay (inside) and cut the new windowboard into to those sizes then lay them into place obviously they will over lap on the bull nose front edge, then mark off where they cross over at the front then strike a line from there backwards OR just use your old windowboards as a template if the mitres are good

 

[Sando8901]

Thanks.
Using the old boards as a template is a great tip. I'll try that first

Thanks again
Paul

 

[Chukka63]

ply with a softwood nosing is an option.