Background with expanding foam, silicon and Sawdust instead of cocofiber?

[7Up]

i saw many tutorials about how to make backgrounds with expanded foam, silicon
and coco fiber but can i use sawdust instead of coco fiber. any side effects ??

 

[Brookster123]

Sawdust can rot and harbor mold. Coco fiber is far more resilient when submerged and will add more structural integrity. I'd stick with the recommended materials.

 

[7Up]

any sawdust resilient woods that wont rot ?

 

[Brookster123]

Mahagony and cedar. Why the sawdust though? Do you live behind a sawmill?

 

[7Up]

personal reaction when coco fiber weight price becomes higher than swordfish steaks

 

[Brookster123]

How much does the build require?

 

[7Up]

maybe 100 grams, but i still wont pay 15 - 30 euro for a bag plus shipping. sawdust is free. if it wont rot iits perfect