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View Full Version : Good deal alert for Canadians plus a tooling question



Evan
06-23-2010, 01:38 PM
Princess Auto has some nice little boxes of solid carbide cutters in the surplus section @ 6 bucks for 9 cutters. The contents of the boxes vary but include some tiny carbide circuit board drills, router bits and what look like mini roughing cutters and various others.

http://ixian.ca/pics7/mintool1.jpg

It's the roughing cutters I am a bit puzzled about. The red one has a drill bit tip. What are these intended for?

http://ixian.ca/pics7/mintool2.jpg

Before anybody asks, yes, I went tool shopping an hour after surgery....

snowman
06-23-2010, 01:43 PM
I'm not sure what they are for, but that's a pretty good price. I pay $1 each or $5 for 6 for those surplus over here.

They are nice little bits regardless. I always assumed they were for some type of circuit board manufacturing process, whether it be the shape routing or what.

Willy
06-23-2010, 03:38 PM
Not exactly sure about the red one Evan, perhaps an easy way to make a plunging rougher, or mill/drill?

Good for you for seizing the moment and hitting PA before going home.
No sense wasting a trip to the big smoke just for surgery.:D

By the way the local PA had those on for $2.49/box a couple of years ago, yes I stocked up.

Black_Moons
06-23-2010, 03:46 PM
lol at macro roughing cutters.

Why, those are for hoging out large amounts of very little material. :P

darryl
06-23-2010, 05:04 PM
I would imagine that it's for ease of slotting in pc boards. Drill, move sideways to make the slot-

Dan Dubeau
06-23-2010, 05:28 PM
lol at macro roughing cutters.

Why, those are for hoging out large amounts of very little material. :P

Good for removing mass quantities of microns.

I've got a couple boxes of those. I know I've used them a few times, but can't remember what for. I know I've used the little drills to drill safety wire holes in some bolts on the race bike a time or two. Other than that they live with all the other dremel bits that suck me into buying them at cheap prices everytime.

darryl
06-23-2010, 07:16 PM
I wonder how good that carbide is, or what grade it is. I wonder if it would make decent custom cutters for shop made boring bars, etc, where you could easily mount them in drilled holes-

I have a tool holder for my lathe which takes round cutters. Most of these I've made from HSS long drill bits that originally came from Boeing Surplus. It would be easy to make up another holder with a 1/8 hole for these carbide shanks. I think I have a few around here somewhere-

Black_Moons
06-23-2010, 08:26 PM
I wonder how good that carbide is, or what grade it is. I wonder if it would make decent custom cutters for shop made boring bars, etc, where you could easily mount them in drilled holes-

I have a tool holder for my lathe which takes round cutters. Most of these I've made from HSS long drill bits that originally came from Boeing Surplus. It would be easy to make up another holder with a 1/8 hole for these carbide shanks. I think I have a few around here somewhere-

woah awsome idea, especialy considering how much shank there is on those toolbits.

beanbag
06-24-2010, 03:44 AM
No wonder this chain is Canadian only - no American male would go to a store with the word "princess" in it. Unless it was a "gentleman's club", or something like that.

Evan
06-24-2010, 04:50 AM
It is a reference to royalty. Canada is still "owned" in name by the Queen of England. Her name appears on the title to all public lands.

Have you ever noticed that the countries noted for the fiercest warriors have no problem accepting a woman as the ruler? For example, all the Scandinavian countries (vikings), The Scots (Mel Gibson :D ), India (the Sikhs) and Japan (Samurai) to name just a few. The US has what? Rambo? :D

John Stevenson
06-24-2010, 04:58 AM
The US has what? Rambo? :D


Al Jolson.

I see OZ now has a woman as a prime minister.

I have nothing against women, I think every tradesman should have one. :D

jugs
06-24-2010, 05:09 AM
Al Jolson.

I see OZ now has a woman as a prime minister.

I have nothing against women, I think every tradesman should have one. :D

Well your Gert hasn't done a very good job with your shop floor, you need to get a Russian bride.
john
:)

madman
06-24-2010, 07:38 AM
Many Years ago my Austrilian Engineer Friend had bought some in a small white box. 50 in a box for like $15 dollars./ He told me they are for circuit board machining work. I still have my set and have not yet used then but since I recently bought a Taig CNC Mill i hope to use some of those cutters soon on some new projects. Mike

Herb W
06-24-2010, 10:14 AM
No wonder this chain is Canadian only - no American male would go to a store with the word "princess" in it. Unless it was a "gentleman's club", or something like that.

Princess auto started out on Princess street in Winnipeg. We don't think about the name when we go there :p :)

topct
06-24-2010, 10:25 AM
I wonder how good that carbide is, or what grade it is. I wonder if it would make decent custom cutters for shop made boring bars, etc, where you could easily mount them in drilled holes-

I have a tool holder for my lathe which takes round cutters. Most of these I've made from HSS long drill bits that originally came from Boeing Surplus. It would be easy to make up another holder with a 1/8 hole for these carbide shanks. I think I have a few around here somewhere-

I have a big set of drills like that. They came from the local Keytronic factory. I would guess them to be C2.

Very easy and forgiving to grind on a green wheel.

troyken
06-24-2010, 10:54 AM
In my early work days, my job was to sharpen those very drills. We used a Tulon brand drill sharpening machine that had two angled diamond wheels. The drill was held in a spindle with an Albrechect chuck. The facets (4 on these drills ) was aligned by microscope the spindle was locked by air and then the carridge moved across the wheels by motor if I recall. Then you indexed the spindle 180 degrees and ran again for the other facets. There was an inspection microsope on the side of the machine to check the sharpened point.We sharpened loads of those drills and had 5 gallon pails full of worn ones. At that time 2 Tulons supplied 15 4 spindle machines running 3 shifts 7 days per week.Those drills, in the small sizes, required high rpm and very good spindle bearings as they are brittle and break easily. The plastic rings were to hold them in the drilling machine's tool holders. The spindles would come over and pick up and release the required sizes. The red ringed one is likely a slot drill/ router bit of some type. They beefed up the later spindles to allow limited routing of features to eliminate secondary routing operations. Prior to that most of the circuit board's internal features and perimeter were punched on a punch press.

Evan
06-24-2010, 11:00 AM
Interesting. I have several high speed spindles including one that does 40,000 rpm which should work nicely with these bits.

gzig5
06-24-2010, 02:05 PM
I'd picked up some carbide PCB drills a while back on a whim, 10 for a buck on ebay. They came in very handy when I broke a 10-24 tap in the last hole on a complex part. Couldn't get to the broken end becuase I was 1/2" down a counter bore, The PC drill happened to be close to the tap drill diameter so I loaded it in the mill, spun it as fast as it would go (~3800rpm), flooded the broken tap with wd40 and pecked away at it. After multiple iterations of flood cooling, I was able to drill out the 1/2" long section of HSS tap and save the part I had invested 4-5 hours in.

Elninio
06-24-2010, 10:39 PM
Active Surplus in toronto has buckets of these small dental bits for cents each, and probably 10000 broken inserts of various shape in three buckets. busybeetools too but its not as cheap. KBC tools too, probably. Do you fellows know where I can get angular contact bearings over the counter in Ontario, Canada? Its for a toolpost grinder ...

oldtiffie
06-25-2010, 03:55 AM
Let's not forget Boudica (Wales/UK)

http://en.wikipedia.org/wiki/Boudica
http://www.google.com.au/#hl=en&source=hp&q=boadicea&aq=0s&aqi=g-s1g-sx9&aql=&oq=bodecia&gs_rfai=&fp=585020c7b4ce828c

And let's not forget the "Brit" Britannia:

http://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Britannia-Statue.jpg/220px-Britannia-Statue.jpg

http://upload.wikimedia.org/wikipedia/en/2/26/Britannia.jpg

http://en.wikipedia.org/wiki/Britannia

France - Joan of Arc:
http://en.wikipedia.org/wiki/Joan_of_Arc

USA: ?

oldtiffie
06-25-2010, 05:25 AM
Originally Posted by beanbag
No wonder this chain is Canadian only - no American male would go to a store with the word "princess" in it. Unless it was a "gentleman's club", or something like that.

A "Gentleman's Gentleman" perhaps?
http://en.wikipedia.org/wiki/Gentleman%27s_gentleman#Domestic_valet

In/from "Queens"?
http://en.wikipedia.org/wiki/Queens

Just take care of your "pinkie".