Decent wood for deep box frames

[sim.on]

I was wondering where I could get some quality pine for making box frames. Wood that generally isn't arched a lot across it's width. Is there a moulding supplier that does it specifically for frames? At the moment I'm using the 'good' stuff from Homebase which works out at around 4 pounds a metre. Even cherry picking what I think is the best there it's still pretty rubbish for making deep 10 x 8 box frames in any quantity. At the moment I'm using the 95mm wide stuff (but there is up to a 3mm width difference between lengths) but would prefer around 80mm width. Thanks.

[Roboframer]

For a lot less than £4 per metre you could buy a flat frame moulding, finished or unfinished and in better wood. Mitre it on its side and the 'lip' of the moulding forms a small rebate; you can either fit this box to your frame in the same way as you normally would, which would mean that your backing mount/board would sit in that small rebate, or you could sit your frame in that rebate and fix your backings however you do already.

[Not your average framer]

quality pine for making box frames

That depends upon what you mean by "quailty pine". Pine is not exactly what everyone would describe as a quality variety of wood. Even for a very large moulding, £4 per metre is a lot to pay for a pine moulding.

For that kind of price you would very easily get the same profile machined up by Norfolk mouldings, or another similar company in a very much better quality type of wood, even after paying for carriage.

[prospero]

If you want really cheap, get a timber merchant to slice you up a sheet of MDF into strips. You should get about 30 metres out of an 8x4 sheet
Granted, It's not solid wood, but it is stable and no knots.

[sim.on]

That's really great thanks a lot all.