soffee83 wrote:
>--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
><stefan_trethan@g...> wrote:
>
>
>>You should run carbide drills quite fast. 30000 RPM is not too fast
>>for them. A regular drill press is on the slow side
>>
>>
>
>I had wondered about that too. I had always related PCB stuff as
>similar to metals, where you wanted more cutting and waste removal and
>less heat/friction.
>
>
>
Yes, but the bits are generally so small that 30K RPM is not too bad,
slower than that and with much feed rate you will dig in and the bit
will snap before it cuts the chips..
toolsandtunes Has good deals that end on Monday mornings, if you miss
this Monday's look again next Thursday or Friday. Limited sizes and the
deals vary, so check many of them before buying. Great guy to order
from too.
drill-bits
<
http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback&userid=drill-bits&iid=7567718209&frm=284>
I haven't ordered any from this one yet, but seems to have some ok deals
too..
Several others on there too, most are probably good. T&T has some small
routers, for cutting out inner sections or boards without too much
margin or waste, just ordered $30 of them myself.
Alan