# Working materials

Posted by Bruno Martins
 Working materials July 22, 2008 07:51AM
hi again if i build a reprap machine, i want to use ABS. in the webpage e see that this material cust \$5,24/Lb. i like to now how much i need(Lb) to do a single piece.. for example piece wiht a Working volume [230mm (X) x 230mm (Y) x 100mm (Z)]. thank you
 Re: Working materials July 22, 2008 08:44AM Registered: 16 years ago Posts: 550
ABS density 1040 to 1120 kg m^3
230x230x100 mm is 0,00529m^3 thats about 5.5 to 6 kg

'sid
 Re: Working materials July 22, 2008 12:42PM Registered: 15 years ago Posts: 199
sid Wrote:
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> ABS density 1040 to 1120 kg m^3
> 230x230x100 mm is 0,00529m^3 thats about 5.5 to 6kg

I think what he meant to ask was the mass of ABS he would need to make the parts for a Darwin which has the standard working volume of 230x230x100 mm, not how much to fill the working volume.

This came up before in [forums.reprap.org] and the answer there was "1.1kg". That was with an earlier design and probably not ABS so I would say "Under 2 kilograms/Under 4 pounds" would be a reasonable guess.
 Re: Working materials July 22, 2008 01:03PM Registered: 16 years ago Posts: 550
Hmm,
because the working volume is not much depending on the plastic parts of darwin but more or less only on the length of the rods (well up to a certain stage of course) I got confused by the question.

So if John is right, I apologize

but yes then it would be about three pounds, but under four for sure.

'sid
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