BkkCoins did not place the hole under the chip. This is impossible. He placed 4 holes on the corners of the board, and a hole in the center of each 4 chip cluster for mounting the heatsink. Without a corresponding hole in the heatsink, there is nothing to attach to. Again, there are no holes under the ASICs.
I need to have a rough estimate for the amount of heatsinks required before I move forward. Asking for a price range between 500 and 5000 heat sinks implies a lack of organization and business plan.
I am speaking with manufacturers in China and the US.
Sorry, i overread the setting. So its 4 heatsinks for each K16 board.
I now found what i referred to with the holes under the chips... Its this post: https://bitcointalksearch.org/topic/m.2179575
If i understand it correctly it means the holes are filled with heat dissipating stuff so that the chip can connect to the heatsink. The heatsink doesnt have to reach to the chip, its already done in the pcb.
I dont think that asking for prices for different quantities is bad business behaviour. Often they will give a list with quantity to create and the attached price to it. I thought that you maybe have such list.
Forgive my noobness but whats the problem with such heatsink for example: http://uk.farnell.com/h-s-marston/890sp-01000-a-100/heat-sink-100mm/dp/4105977
Its the first result searching "heatsink 100mm". Wouldnt it be possible to drill in the needed holes to attach it at the pcb? I mean the pcb on the other side is flat, theres no parts built in.
The price for these arent low though... i only wanted to ask why such things wont work.