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Crusader68
10-11-2014, 12:01 AM
I saw end mills listed as "spoon cutter" end mills, what's the difference from a regale end mill? I haven't been able to find a definition online.

KiddZimaHater
10-11-2014, 12:09 AM
Spoon Cutter ??!!
Never heard of such a critter.
Was there a picture of said 'Spoon Cutter' ?

oldtiffie
10-11-2014, 12:45 AM
Any help?

https://www.google.com.au/search?q=spoon+cutter+end+mill&biw=1920&bih=845&tbm=isch&tbo=u&source=univ&sa=X&ei=a7U4VK_bGcrj8AWX0YCICw&ved=0CDwQsAQ

https://www.google.com.au/?gws_rd=ssl#q=spoon+cutter+end+mill

loose nut
10-11-2014, 11:57 AM
There used to be spoon cutter drills/augers a long time ago, 1800's but they disappeared when twist drills etc. came along.

alanganes
10-11-2014, 07:09 PM
I've never heard that term before used to describe an endmill. Looking at the link posted above might suggest that it refers to an EM with a high helix angle, but that's just a wild guess on my part.

PStechPaul
10-11-2014, 07:34 PM
From what I was able to find, a spoon cutter might be a ball nose end mill, which could be used to mill a concave feature, like a spoon.

Crusader68
10-12-2014, 02:58 AM
When I first searched on Google I couldn't even fine a photo. My initial thought was that it may refer to an EM with flutes that extend out wider than a normal one, to help with chip evacuation.

Old Hat
10-12-2014, 03:37 AM
There used to be spoon cutter drills/augers a long time ago, 1800's but they disappeared when twist drills etc. came along.

It was a spoon-bit back then, and a skilled smith could make one on the spot as needed.
It's only drawback was, that feed pressure needed to be constant for it to hold a given size.
A geared quill-feed was virtually non-existant, so a smith had to have a good "feel"
to keep it "on-size" where needed, which wasn't really an issue in most work.

Today a single-lip gun~drill is the decendant of the spoon-bit.
And is fed with a good metered feed, and will exit long distance thru holes
well with-in a thou per inch of where it started.

Mister ED
10-12-2014, 05:03 PM
There used to be spoon cutter drills/augers a long time ago, 1800's but they disappeared when twist drills etc. came along.
Well disappeared may be a strong word, lol. I still have two sets of spoon bits and a couple other bit designs that would be considered nonfunctional by today's standards (and a couple of braces to use them with). Mine are for wood, not sure if they were made for metal or not.

Crusader68
10-21-2014, 11:58 AM
I emailed customer service at the site that has the spoon cutter end mills and this is the reply I got: "used for heavier stock removal in alum for true high speed machining."

oldtiffie
10-21-2014, 06:48 PM
Perhaps as it is tapered and has a radiused end that it could be used to cut the draft angle and radii on a wooden casting pattern.

JCHannum
10-21-2014, 07:55 PM
This one is neither tapered nor ball end and is for machining stainless;

http://rtjtool.com/3-8-3-flute-spoon-cutter-015---020-radius-1-loc-uncoated.aspx

Compare the shape of the flute with this one, which is a standard end mill;

http://rtjtool.com/38dia3flute78localtinctdcarbideendmill.aspx

The spoon end mill appears to have a radius in the leading edge of the flute that does not appear on the standard EM. The spoon EM calls out a 0-015"-0.020" radius that may refer to this feature. Just another WAG.

oldtiffie
10-21-2014, 08:05 PM
Thanks Jim - good info.