GKCrossword in DT.

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20d. Thick fabric with a soft nap on one side, used to make baby clothes? I have A*A*S//*O*N.
32a. Timber beam or rafter with a small cross-section. *C*N*****
24d The appeal of something alluring or dangerous S*R**//*I*N

[arachnid]

32a stanchion

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Swans down
Scantling
Siren song

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(19a is Busk)

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Thanks all. I couldn't get away from STAY for a whalebone corset which threw me!

Two to go:
1d, Red tinged Brazilkian wood used to make the finest violin bows
**R*A*B*C* and

41a Variety of orthoclase with shimmering blue reflections, often a feature of the Art Nouveau jewellery of Rene Lalique.
I had MICVROLINE but this doesn't fit now!
M*O*S*(T)O(N)E

[cruciverbali]

Moonstone

C

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Thanks

[squarebear]

the violin bow wood is pernambuco.

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Gratedul thanks to all.
P.S. Where did you find "permambuco" from???