What the color of the chips tell you when drilling

The color of your chip will give you some very important information. AS A GENERAL RULE:
lets look and see why we believe the standard chip color should be gold. I am using some cutting oil but no coolant.

[@ericjenness2337]

When a hot chip from a fly cutter lands on your lip, you know EXACTLY how hot they are!

[@imnotahealthandsafetyperso4889]

Good old fashioned hand drill where the only thing that get hot is the operator lol

[@bogart-fv5wi]

Another good video, thanks. I learned early on by an old toolmaker who took a liking to me how to "read your chips" to run the tooling efficiently. Regards

[@rexhaereticus2468]

the twist drill is the king of cutting tools. the chisel is the only cutter that can exert more pressure than a twist drill.

[@SuburbanToolInc]

Got that right!

[@MrMojolinux]

Great Video as usual. God, I only wish I had these videos when I was coming up! All we had back then were books and theory. Your terrific videos show and prove all things toolmaking using Don`s expert experience and teaching ability! Keep up your great work guy`s

[@SuburbanToolInc]

I'm glad you enjoyed it, and thank you for the kind words as well!

[@bcbloc02]

Do you all have any experience with the winslomatic style drill grinders? Any thoughts on the various drill geometries that can be ground and their uses? That would be an excellent video I think.

[@SuburbanToolInc]

bcbloc02 We do not use the WinsloMatic style grinders so that may be better suited to someone with experience with them. The various drill geometries would make a good video. We will try to do a video on this topic soon. Thanks for watching and sharing.

[@TheWireEDM]

bcbloc02 In a basic shop there is basically only two grinds: the conical grind that is for some strange reason "the norm" that 'everybody' grinds and learns, and then there is facet grind (preferably 4 facet) which is a lot easier to learn, do, get symmetric and gets you a drill that may not need a starter hole and cuts alot easier. But if you are a production shop, then it pays to buy a CNC grinder that can do whatever you want to get the best performance for the type of work you need to do.

[@jtkilroy]

SuburbanTool Inc Thanks Guys, I really enjoy your informative videos. How about a video on holding 1/4 plate to a mill table for facing over the entire surface. Approx. 9" wide in my case.

[@bcbloc02]

James Kilroy Mag chucks work awesome for that...unless of course it is aluminum plate.

[@jtkilroy]

bcbloc02 You called it, its aluminum

[@SuburbanToolInc]

James Kilroy James, Thank you for watching our video's. We have been enjoying your channel as well. If your work piece is flat, I would recommend a vacuum chuck. Your new Fly Cutter will work well with it. www.subtool.com/st/vc_vacuum_sine_plate_chucks_and_pumps.html We have a video showing it holding plastic kzbin.info/www/bejne/qXand6pmeZqsntE and here is also a video of the product kzbin.info/www/bejne/fITGgWWVhbSjmZY

[@SuburbanToolInc]

SuburbanTool Inc James , If your vise permits , you can also put the vise jaws on the back side of the vise. The vise we have in the video would fit that part with the jaws reversed.

[@jtkilroy]

SuburbanTool Inc Thanks, I have used that technique before, most of the time with success, some times not so much. A combination technique of putting the jaws on the back of the vise and using some soft jaws might work in this case. The part is oddly shaped, one perpendicular edge, otherwise its lots of curves. Thanks a lot for your suggestions. Looking forward to more videos from you guys.

[@Travisfromoregon]

hot enough to melt into safety glasses, lol

[@RumpLeINtiLINsKinnIN]

+Travisfromoregon Or stick to your skin and burn the shit of you. fun

[@MandeepSingh]

I am wondering what rules to follow for Cast Iron drilling? :D

[@MandeepSingh]

***** Thanks for the handy tip. I believe many such finer nuisances are necessary for a machinist

[@dalesimonds]

Blue steel indicates a temp around 700 F. I'm not sure how accurate the test was without a thermocouple attached to the base metal. The color of steel at different temperatures is purely oxidation. There is a chart, but I forget who makes it. Tempil I think.

[@RANDALLOLOGY]

This information and drill bits wasn't "BORING" LOL You want the folks to get the " POINT" you were trying to get across. Ha ha. !