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(10-03-2019, 11:04 PM)Vinny Wrote: 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.
2050? Aluminum/copper? 
I'm with Stan and would probably use 4140 myself. It worked a treat for me when I made the new ratchet ring for my arbor press - although I used annealed round stock and hardened it myself after machining it. I did make something else from 4140 PH too (chuck keys maybe?) and was surprised at how well it machined even half hardened. Have to say I like the stuff. 
Willie
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(10-03-2019, 11:28 PM)Highpower Wrote: (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. 
There are plans available for making your own.
Ed
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(10-03-2019, 11:46 PM)Highpower Wrote: (10-03-2019, 11:04 PM)Vinny Wrote: 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.
2050? Aluminum/copper?
I'm with Stan and would probably use 4140 myself. It worked a treat for me when I made the new ratchet ring for my arbor press - although I used annealed round stock and hardened it myself after machining it. I did make something else from 4140 PH too (chuck keys maybe?) and was surprised at how well it machined even half hardened. Have to say I like the stuff.
Not Aluminum/Copper, this is some form of tool steel. When I found the info before, it was as hard or harder than 4140. I have a bunch of 4140 1" (and thicker) plate. This stuff came out of a tool and die shop that went under. If I find the specs on it, I'll post them.
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The following 3 users Like Vinny's post:
f350ca (10-04-2019), Highpower (10-04-2019), EdK (10-04-2019)
Twas a lot easier to find this time. 2050 is the product number of PCS, it's a tapped support pillar used in molds. The actual material is 1040. Here are the specs on 1040 and 4140:
1040: https://www.azom.com/article.aspx?ArticleID=6525
4140: https://www.azom.com/article.aspx?ArticleID=6769
The machinability of 1040 is 60, compared to 4140's 65. As to hardness, they are very close to each other.
It also has one other property that makes it better than 4140. I have 2": round 1040, I don't have 2" round 4140!!!
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(10-04-2019, 12:21 AM)EdK Wrote: (10-03-2019, 11:28 PM)Highpower Wrote: (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.
There are plans available for making your own.
Ed
The sad truth is that a lot of the projects I've already started and bought materials for will never get finished as it is.
No point in me starting any more. 
Willie
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The following 1 user Likes Highpower's post:
Vinny (10-04-2019)
(10-04-2019, 08:15 AM)Vinny Wrote: It also has one other property that makes it better than 4140. I have 2": round 1040, I don't have 2" round 4140!!!
That is a good property to have!
And it's close enough for government work... 
Willie
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10-04-2019, 01:01 PM
(This post was last modified: 10-04-2019, 01:03 PM by Dr Stan.)
(10-04-2019, 08:15 AM)Vinny Wrote: It also has one other property that makes it better than 4140. I have 2": round 1040, I don't have 2" round 4140!!!
Let me guess, you're at least partly Scottish. Only 1% will make one squeeze every possible cent out of a dollar bill.
BTW, I'm of Scot, Irish, English and German decent. Genuine 100% mutt.
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Polish and German - 50% each. Although my former business partner used to say something similar about me.
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50/50 Hungarian/Lithuanian. I'll spend top dollar (if I have it) on something I really want. My younger brother on the other hand is tighter than two coats of paint. Still don't know how that worked out. 
Willie
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Anyone have any recommendations for a home shop laser? I'm thinking 100 watts or so with a 600mm X 900mm (24X36) bed.
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