--- In
Homebrew_PCBs@yahoogroups.com, "cdvsmx5" <inquiry@...> wrote:
>
>
> < "sailingto" > wrote:>
> > Trying to figure how it works, I expect the hidden mandrel is the secret?>
>
> There is no secret, the mandrel is tiny and is only pouched for identification.
>
> The mandrel is used to form and then insert a tube of thin copper foil to line the via walls.
>
You won't mind unpouching it, then?
> > Do you have a video showing how to make the vias?...>
>
> The magic happens between the thumb and index finger. Pictures are not helpful. The graphic instructions included permit emphasizing critical steps.
>
May we see the graphic instructions, then?
> <... I would be interested in good vias, but not willing to buy a "pig in a poke" type product.>
>
> The kits are priced to compete with the retail cost of raw materials before adaptation to this purpose. If you need 'good vias' this is a great offering.
>
> I don't understand your mistrust.
Anyone who is going to pay out money for something investigates it first. If a salesman won't let you see critical parts of a new device that claims to make something much easier, it will make any reasonable person press for more information.
The sample board, IMHO, looks very crude.
Steve Greenfield