Drill Bits breaking

[55fairlane]

There was no can I spell worth a crap when I was in my apprenticeship.....thank goodness!

 

[Lpherr]

There was no can I spell worth a crap when I was in my apprenticeship.....thank goodness!

So, it's a good thing you didn't want to become an editor, right?

 

[ditcherman]

Spelling nazi peeve... there is no such thing as "leanth".

leanth​

Not English​

Leanth has no English definition. It may be misspelled.

Leanth vs Volume - What's the difference?

As a noun volume is a unit of three-dimensional measure of space that comprises a length, a width and a height it is measured in units of cubic centimeters in metric, cubic inches or cubic feet in english measurement....

wikidiff.com

hey, leave the cat alone wer leernin stuff her!!

(But I did look up McMaster Carr drill **** and THEY call them drill ****!)

 

[55fairlane]

So, it's a good thing you didn't want to become an editor, right?

I am a featured author in "machinist workshop " & "homeshop Machinist " I spell so poorly I confuse spell check. The editor will call me and ask what word am I trying to use....it's funny

 

[red_zr24x4]

I became a tool make, because "can you spell" was not in the mechanically inclined test.
And after 32 plus years, I have quite caring if I can spell.....lol.....

Huh, that's why I became a pipefitter

 

[mark40sw]

Priced McMaster-Carr Short-Length Cobalt Steel Titanium Nitride Coated -- 1/8" & #29 ~ $5 each plus 8-32 tap for hardened Steel $14 ... ( maybe get 2 of each bit - just in case )

--- Shipping $10 seems excessive --- any places in NWI that sell the McMaster-Carr brand ?

McMaster-Carr is a distributor, not a brand of tools or materials. They do not list brands carried but have heard they will tell the brand if you contact them on a specific item. They do carry very good brands, not cheap stuff.

Cleveland Twist / Greenfield drills seem to hold up very well.

If you are drilling into an odd angle or and area with an odd surface (not flat), the drill can catch or walk resulting in snapped drills. A center or spotting drill can be used to help the situation.

 

[Vimace]

You need to use a press drill while your receiver is dead center and level, while is holded to a press vise attachment

 

[D K]

You need to use a press drill while your receiver is dead center and level, while is holded to a press vise attachment

I was just about to ask if you’re using a press or hand-holding. Its usually that angular moment that snaps the bit, not the rotational force of the drill itself.

 

[Dean C.]

Priced McMaster-Carr Short-Length Cobalt Steel Titanium Nitride Coated -- 1/8" & #29 ~ $5 each plus 8-32 tap for hardened Steel $14 ... ( maybe get 2 of each bit - just in case )

--- Shipping $10 seems excessive --- any places in NWI that sell the McMaster-Carr brand ?

This is the answer , though no idea if they have retail locations. A lot of the Chinese steel these last couple years have had serious metallurgical issues. For important stuff you want to use USA sourced parts 100% right now

 

[Creedmoor]

Huh, that's why I became a pipefitter

Lol. I looked at my quarter card more than once to spell,
International Union of Elevator Constructors.

 

[Vimace]

I was just about to ask if you’re using a press or hand-holding. Its usually that angular moment that snaps the bit, not the rotational force of the drill itself.

Exactly, also the drill speed, too high and it will snap in half. 400-600 rpm and a constant still press will do

 

[radar8756]

I was just about to ask if you’re using a press or hand-holding. Its usually that angular moment that snaps the bit, not the rotational force of the drill itself.

I broke the first 2 Freehand - then moved to a Drill Press - ( I will double check the speed / Pully combo ) ---
But now think a big factor was the Length - the short length will be more stable

 

[radar8756]

Once you get your drills, get yourself some Tap Magic (cutting fluid). A drop or two will do ya.

Are there different Flavors ?

Ace Hardware $12.99 / 4 oz
Amazon 6.99 / 4 oz

 

[55fairlane]

I broke the first 2 Freehand - then moved to a Drill Press - ( I will double check the speed / Pully combo ) ---
But now think a big factor was the Length - the short length will be more stable

Do not forget to center drill first!
At minimum layout and center punch!!!
Easy up on the pressure are you break thru, or (old trick) "dupe off" the lips (portion of the drill that cuts) so the drill doesn't grap or bite as you break thru.

Kohler

 

[Good on paper]

Priced McMaster-Carr Short-Length Cobalt Steel Titanium Nitride Coated -- 1/8" & #29 ~ $5 each plus 8-32 tap for hardened Steel $14 ... ( maybe get 2 of each bit - just in case )

--- Shipping $10 seems excessive --- any places in NWI that sell the McMaster-Carr brand ?

The thing with McMaster is generally you’ll have it in hand the next day, almost immediate gratification.

 

[Vimace]

Are there different Flavors ?

Ace Hardware $12.99 / 4 oz
Amazon 6.99 / 4 oz

View attachment 256970


View attachment 256971

You could use automatic transmission fluid, you won't need that much, a few drops at the most per hole

 

[ed1838]

Please dont break the tap off! I have got tired of getting them little ones out. A certain coworker will break them every time if under 1/4"

 

[55fairlane]

You could use automatic transmission fluid, you won't need that much, a few drops at the most per hole

ATF is not the best idea , but will work in a pinch.

Dark threading oil/cutting oil can be had at most hardware store.

Do a lot of drilling? Hit Amazon and get a coolant mister and some water soluble oil.

 

[marvin02]

McMaster-Carr in Elmhurst, IL has will call pickup.

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

 

[dprimm]

Ps...machinist peeve...there is no such thing as a drill bit, you don't want a bit of the drill do you? There are gun drills, jobber leanth, screw machine leanth, aircraft leanth, tre-pan, Carbide tipped, Indexable Carbide tipped, ECT. but no such thing as a drill bit!

Hmmm. Machinists at my day job call them drill bits. Then other things.

Of course, I sometimes struggle to get more than “I need a drill bit” out of them.