I’ve been evaluating options for precision drilling in hard, abrasive and brittle materials, and sintered diamond drill bits keep coming up as a reliable solution — especially where tool life and hole quality really matter (e.g., stone, quartz, ceramics, and technical composites).
Unlike electroplated options, sintered bits tend to maintain diamond exposure longer under heavy use, which helps with consistent cutting action and reduces breakout or wander.
For anyone comparing sintered drills and different bond styles, this page lays out a range of options and specs:
https://ukam.com/product-category/diamond-core-drills/sintered-metal-bond/
Curious what geometries, grit sizes, and feed/coolant strategies others prefer for clean, repeatable holes without chipping or heat damage?