Originally Posted by protc3
you want to use high helix carbide circuit board drills.you will get about 2500-5000 holes before you need to regrind depending on if your speeds and feeds are correct.being you are using it on a drillpress which are pretty low RPM,you should be able to get 200-300 holes with no splintering before a regrind.you can get them from McMaster Carr for about 10 bucks a piece.for countersinking an 82 degree or a 90 degree carbide countersink is what you need.standard screws use 82 degree and metric screws are 90 degrees.i will look up the part numbers on monday at the shop so you can order them.
I tried to order from "McMaster Carr" two times one time through JetCarrier and once directly. This is the e mail i got:
"Due to the ever-increasing complexity of U.S. Export regulations, McMaster-Carr has decided to only accept orders from a few, long-established customers of ours
overseas. We cannot accept your order, and regret any inconvenience this causes you. "
The second mail follows:
"Thank you for purchase order xxxx. In the past you advised us that some or all of the material you purchase from us is exported from the
<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com
ffice:smarttags" />United States. The United States government regulates the
documentation required for material shipped outside the US and also controls what material companies are allowed to export. This is a serious
responsibility for any exporter, and we have chosen to avoid the risks involved in these transactions. We will be unable to accept your order or
to continue doing business with you. We regret any inconvenience this may cause you.
Jason, do you know of any other company that has a good Countersinker
Solid-Carbide Three-Flute Countersink 3/8" Body Dia, 1/4" Shank Dia, 82
I was told that if somone will try to order it for me in the US
and "McMaster Carr" finds out it is to be send out of the US, then
they will cancel you order.