Guys,
Just ran a TEST.
Grabbed a 5/8 in dia. piece of Electreat 50.
Drilled a #15 (.1800 dia) hole, normal for 10-32 form tap would be #16 (.1770 dia). Used Guhring screw length HSS.
Drill speed was 260 rpm. No problem. By looks of drill, easy 20 holes per drill.
Then tapped hole with a regular 10-32 3fl OSG tap, with Tapmagic PRO TAP lube.
Kind of tough but ok.
Then ran 10-32 FORM tap in same hole, (to open up) again Tapmagic PRO TAP lube.
The hole will not gauge with a 2b thread gauge, but a 10-32 screw will thread in no problem.
By the looks of the form tap, probable 8-10 hole per tap.
If a guy were careful and didn't have hundreds of holes it's an option.
__________________
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Last edited by wms; 06-10-2003 at 10:12 PM.
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