Posts: 2,620
Threads: 100
Joined: Dec 2014
Location: Michigan
New Quick Question
What type of steel are End Mill Holders made from?
I find myself needing a 1" and 7/8" holder with a B&S 9 taper. I figure I'd start with a 1 1/2" round and make them. Once I'm set up for the taper I can make 2 or 3, either that or nor bother with the taper and make HR style holders. The HR would actually be easier, It's straight and fits into an existing holder, like the 1 1/4 that I already have. I would just have to mill the flat on it.
Posts: 3,003
Threads: 51
Joined: Apr 2012
Location: Ontario
Any steel would work Vinny. I make things like that out of what ever is in the scrap bin. If it was used in an industrial setting you'd want something that could be hardened to resist wear, but for our use, its probably never going to be an issue.
Free advice is worth exactly what you payed for it.
Greg
Posts: 2,620
Threads: 100
Joined: Dec 2014
Location: Michigan
Ok, that makes sense. Thanks!!
Posts: 774
Threads: 49
Joined: Mar 2012
Location: Rochester, NY
According to CNC guy at work, the ones for the CNC are hardened and ground 4140.
Got a stupid look from the shop foreman when I asked about the ones for the Bridgeports.
Full of ideas, but slow to produce parts
Posts: 2,328
Threads: 271
Joined: Jun 2014
Location: La Libertad, Philippines
If you were buying material for the project I'd recommend prehardened 4140.
Posts: 2,620
Threads: 100
Joined: Dec 2014
Location: Michigan
As it turns out, a couple of years ago I won a auction that had a bunch of 5" long, 2" dia bars of some pretty tough stuff, don't recall the number right now, that would be perfect. I also have some 3" out there but won't need it for this. The problem with the 2" stuff is, where did I put it? They were all in sealed plastic bags with a bunch of large springs. Weather is about to go downhill here so I may climb up on the shelf above me (the shelves are pallet racks) and see if I put them up there in the back.
Posts: 736
Threads: 34
Joined: Feb 2012
Location: Minneapolis, MN
My quick question ... anyone have any experience with a Quorn sharpener they would like to pass on? Any thoughts would be appreciated.
Posts: 4,463
Threads: 184
Joined: Feb 2012
Location: Missouri, USA
(10-01-2019, 12:40 PM)Vinny Wrote: The problem with the 2" stuff is, where did I put it?
I'm in the same boat. I have a set of R-8 end mill holders... somewhere. I pulled them out of my 'tooling' cabinet to make room for other 'more often' used items instead, and haven't seen them since - except for the 1/8" end mill holder I always keep in the collet rack with a 1/8" carbide starting drill in it.
They are in a box buried somewhere in my basement, probably along with my vise stops that I can't find either.
Willie
Posts: 2,620
Threads: 100
Joined: Dec 2014
Location: Michigan
Willie: I found the box and in it was only one more of those 2" rounds, but it did come with the number of what it is. It's 2050. I remember having a hard time locating what it was last time I looked.
Arvid: Sorry, never heard of it.
Posts: 4,463
Threads: 184
Joined: Feb 2012
Location: Missouri, USA
(10-01-2019, 12:58 PM)arvidj Wrote: My quick question ... anyone have any experience with a Quorn sharpener they would like to pass on? Any thoughts would be appreciated.
Never laid eyes on one but apparently there are a couple of books available across the pond on them.
http://www.lathes.co.uk/quorn/
Looks like a nice bit of kit. 
Willie
|
