maybe a 44 mag
animal
On 3/22/25 9:30 PM, Charles Kinzer
wrote:
toggle quoted message
Show quoted text
I thought the hole was to be
through the circuit board, not the chip itself.? The substrate
is silicon which is rather hard.? It has a Mohs hardness of
about 7.? Titanium is less hard at 5 to 6 as a comparison.?
Tungsten carbide 9.? The silicon wafer is also much harder
than regular glass.
You probably not only need
something like a diamond drill as mentioned, but perhaps even
a means to cool it.
One other thing.? The silicon
wafer at the beginning of the semiconductor manufacturing
process is about 1 mm thick.? Many wafers, after the devices
have been deposited on them, go through a "backgrinding"
process to remove much of the silicon wafer to make it
thinner.? Then it is sliced up into individual chips and then
packaged.? Thinning helps with heat distribution.? (I know
this stuff because I was involved in designing semiconducting
manufacturing equipment).? Therefore, the substrate might
actually be quite thin.
Charles E. "Chuck" Kinzer
On Saturday, March 22, 2025 at 09:15:44 PM PDT, Jon Rus
via groups.io
<byghtn5@...> wrote:
Perforate the
chip with a LASER!
?in a CNC to
run a circle pattern round-and-round to achieve the
desired hole size.
On 3/22/2025
2:27 PM, Jacques Savard via groups.io wrote:
Résultats de traduction
Résultat de traduction
I have some cpu 486 or pentium vintage version
?
But impossible to drill a ho;e in the material
Normal drill for Metll Nothing
Drill Diamand for glass or stained glass Nothing
barely trace
Probably epoxy
tre
Do you have an idea please
Jack 47 71
it is exposy proly but very hard stouf
Any Advise Please
