Quote:
Originally Posted by FrankJ
$2000 will by a lot of aluminum. Maybe it had certifications that drove the price up. In that case the scrap doesn't have the certs & is not worth as much. Try www.onlinemetals.com to get a price per square foot or per pound. You only need to cost what actually gets put on the robot not the whole quantity donated. The rest is stock. |
That's not exactly correct. In your Bill of Materials you need to include the cost of the metal you had to purchase in order to make the part. If it required a 4 foot X 2 foot piece of aluminum to cut out your part you must include the cost of the entire piece. You don't have to purchase it that way but you do have to find out what the smallest piece that you could purchase is that you could have cut your pieces out of and use that as a cost in the BOM. You can't just figure out the square feet of aluminum in your parts and multiply that by some square foot cost and put that in the BOM. The waste counts.