The Ultimate Guide to Drill Bits - Practical Machinist
What do you all know about drill bits? There’s actually a lot more than you think that goes into their shape and function. In this …
Peck Drill Depth, Rule of Thumb? - Practical Machinist
Dec 28, 2005 · Does that .1" of drilling air mean that the actual first peck depth will only be .2" into the part? Or does the machine …
Practical Machinist eShop - Practical Machinist
Check out the Practical Machinist store! Find the right piece to show your love for the machining community.
Recommendations for twist drill brands - Practical Machinist
Mar 2, 2010 · Who makes good twist drill bits? Any brands particularly recommended, or, abhorred? I've got a number of metric …
Programming a Drilling Cycle with the G81 G-Code
Marc Cronin, founder of GCodetutor.com shares a few tips to write and use effectively the G81 code to drill holes on a CNC mill.
Feeds and speeds for gundrilling - Practical Machinist
Nov 11, 2020 · I'm about to drill a 5mm hole 400mm deep in a piece of 4140QT @235Bn. I have a new gundrill here for the task. A …
Best Way to Drill a Hole thru 80/20 Aluminum Profile?
Oct 20, 2013 · I want to drill and ream a 1/2"-dia hole thru a 1x2 80/20 aluminum profile, as shown by the vertical centerline in the …
General | Drilling and tapping ar400 - Practical Machinist
Aug 18, 2009 · I know the mag drill is the best drill to use as the plates are big and heavy and cant be fitted into any type of other …
Best method to drill 1300 3/4" holes in stainless
Oct 5, 2017 · I need to drill/machine 1300, 3/4" holes in 3/8" thick, 304 stainless. What are your recommendations for tooling to do …
How to stop a drill from 'birds nesting'? - Practical Machinist
Mar 20, 2014 · I have terrible luck keeping smaller drills (3/16 and under) from birdsnesting when drilling hole pattersn. Having to …