I am finalizing my supplier for the all important torsion spring. My beta run is going to cost me $3/spring. A production run is going to cost me $0.75/spring. McMaster-Carr wants $4+ for a less than ideal spring. Simple Simpson is going to cost nothing to make. "Wealth Without Money" or at least "Wealth With a Small Amount of Money".
Even at the grand total of $2.25 for all 3 springs, this is the high dollar vitamin. The bearings are less than $0.40/piece. The bolts are all less than $0.10/piece. I think I have actually crossed over to the point where the plastic mechanicals cost more than the metal mechanicals. I can't wait to put the official BOM together to see what this thing is going to cost for someone buying off the shelf parts.
Even at the grand total of $2.25 for all 3 springs, this is the high dollar vitamin. The bearings are less than $0.40/piece. The bolts are all less than $0.10/piece. I think I have actually crossed over to the point where the plastic mechanicals cost more than the metal mechanicals. I can't wait to put the official BOM together to see what this thing is going to cost for someone buying off the shelf parts.