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Posted by Scrim on April 30, 2008, 12:18 pm
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> from "Scrim"
>> "Tony Jeffree"
>> > Mike wrote:
>> >> "TT_Man" wrote:
>> >>>"Scrim" wrote
>> >>>> I'm struggling to find an online source for lengths of about 6mm
>> >>>> sided
>> >>>> square cross section wood.
>> >>>> It just needs to be strong enough to build a box frame for tacking
>> >>>> warped 3mm plywood to.
>> >>>> Is there somewhere nice and cheap?
>> >>>>
>> >>>B&Q, hardwood,but it might be 1/4"
>> >>
>> >>B&Q square softwood is 8mm minimum (in the stripwood rack) B&Q
>> >>"hardwood" 12mm - in the mouldings rack but it's just pine and so not
>> >>hard. I was down there rooting through their stock only the other
>> >>day.
>> >>
>> >>Best place for 6mm hardwood is a model shop - ask for balsa. You never
>> >>said how hard you needed and balsa is a hardwood :)
>> >
>> > ...sounds like a load of balsa to me... <G>
>> >
>> Thanks chaps. Actually I never mentioned hardwood (that was TT_Man)
>> just "It
>> just needs to be strong enough to build a box frame for tacking warped
>> 3mm
>> plywood to", which pretty much cuts out Balsa I reckon!
>
>> I was hoping there might be some nice online sources. My usual experience
>> with travelling to a shop to buy is that it's too much hassle to look at
>> alternatives for the cheapest. Add in the travel expenses and paying for
>> postage buying online doesn't seem such a pricey alternative.
>
>> I think I'm going to go for 8mm square wood instead of the 6mm I
>> originally
>> chose. The stronger the better, but not at any cost.
>
> I would suggest that you are on a hiding to nothing with this project.
> The warp in 3mm Plywood will be much stronger than any 6 or 8mm square
> timber of any specie will be able to correct.
>
> You haven't said how 'warped' the plywood is, or it's other dimensions,
> so it is difficult to offer any good advice but if you can find 12 or
> 15mm square Ramin you might have a chance.
>
> Ramin is what all small mouldings & dowels used to be cut from up to
> about 20 years ago but due to excessive harvesting is now restricted.
>
> Balsa (ochroma lagopus) is an oddity as far as being a 'hardwood' is
> concerned. The quick and dirty method of determining 'Hard' or 'Soft'
> wood is that Evergreen is 'Soft' and Deciduous is 'Hard' but Balsa is
> described as Evergreen or 'dry season deciduous if the dry season is
> long'. It's 'strength to weight ratio' is its prime benefit.
>
> JG
Thanks to all (except :Jerry:) for the helpful contributions,
Scrim
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