dbc
02-20-2014, 10:17 AM
Until now, we listed the step "cut (scissors, knife)" for each fibre layer or mat. Accordingly, we needed more material (cutoff) and more labor. When I looked into the 2013 Cost Report of Cornell for another reason, I saw that they did not use "cut (scissors, knife)" for any fibre part.
So my question is: Is it necessary to list the cutting of fibre mats? If so, only for non-rectangular shapes? Or only if we cut holes into a mat?
And how about machined parts (Aluminum, no Carbon fibres:D)? Some of our parts are ashlar formed so that they can be sawn in shape or ordered as readily shaped sheets from a supplier. If we don't need a close tolerance, nothing should be said against just counting the value for the material with the needed dimensions (e.g. 30*60*10mm^2, \rho=2,7g/cm³, 4,2$/kg => cost=0,20$)
So my question is: Is it necessary to list the cutting of fibre mats? If so, only for non-rectangular shapes? Or only if we cut holes into a mat?
And how about machined parts (Aluminum, no Carbon fibres:D)? Some of our parts are ashlar formed so that they can be sawn in shape or ordered as readily shaped sheets from a supplier. If we don't need a close tolerance, nothing should be said against just counting the value for the material with the needed dimensions (e.g. 30*60*10mm^2, \rho=2,7g/cm³, 4,2$/kg => cost=0,20$)