Re: Dumb question dept.
Machining hss video https://youtu.be/rRkjVcmjhuc?si=2Plk76ImYj2FU8dG Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ Sent: Wednesday, September 11, 2024 8:41:56 AM To:
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Andrei <calciu1@...>
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#63654
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Re: Dumb question dept.
Peter, You can¡¯t rough it a HSS tool bit using an end mill. Your best option is to grind it by hand on a bench grinder. I have two grinding wheels. One is a flaring cup aluminum oxide wheel 4¡±
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OldToolmaker
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#63653
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Re: Dumb question dept.
Yes, you can machine tool steel using a carbide endmill. Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ Sent: Wednesday, September 11, 2024 8:09:12 AM To: Carl
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Andrei <calciu1@...>
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#63652
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Re: Dumb question dept.
It¡¯s been a while since I¡¯ve posted a dumb question (your view may differ!) so here is one¡ I don¡¯t have a decent bench grinder, or, at least, it doesn¡¯t have accurate guides*. I do have a
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Peter Brooks
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#63651
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Re: Looking for some help.
Just a couple of things to note. The eccentricity is not dimensioned on the drawing, but everything points to it being 10 mm, so a 20 mm throw. Also note the radial hole just visible in this picture:
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Keith S. Angus
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#63650
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Re: 795, 895 (etc) DC motors
Hi Gang: There are two risks as cutting speed goes up: 1) heat, the tool bit temperature will pass the tool steel's tempering point and will "burn" up the cutter. Carbide can cut red hot chips, High
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Carl
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#63649
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Re: Looking for some help.
Hi Keith: I have a SL that is great for the small jobs. I also have a Smithy Granite 13x24 that is better for the larger work. But the Unimat is the go to tool for drilling small holes and I have made
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Carl
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#63648
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Re: Looking for some help.
I would just say that the old DB/SL is pleasantly versatile in use, and I often returned to it with a sigh of relief after working with some of the other small lathes that are around. I now use a U3
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Keith S. Angus
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#63647
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Re: 795, 895 (etc) DC motors
I'd say the one on the left was done at a higher cutting speed. However, you are cutting hard brass, which is the easiest stuff to cut. In the comparison of machinability hard brass is the 100% that
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Keith S. Angus
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#63646
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Re: Looking for some help.
Jim, Thank you for these.? Exactly what I was looking for. Jim
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James Quick
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#63645
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Re: Looking for some help.
Here you go - along with a quick drawing https://www.doublemountainview.us/shopwork/unimat/eccentric/20240910_170549.jpg https://www.doublemountainview.us/shopwork/unimat/eccentric/20240910_170746.jpg
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Jim Korman
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#63644
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Re: Looking for some help.
If I would suggest anything for anyone to buy in a small lathe, it would be a Sherline.? For lathe work, I feel that it is better than a Unimat.? It does not have all of the accessories, but the
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John Hutnick
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#63643
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Re: Looking for some help.
Hi Charles, I get that, collectors and rarity drive up prices but that's not of any interest or practical use to me. I look at a lathe as a tool. The condition of that tool is important for sure but
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clankennedy2004
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#63642
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Re: 795, 895 (etc) DC motors
There is some combination of speed, feed, and depth of cut that will be most effective for the material, cutter type & material, and desired finish. Which is only important for those who are doing
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Bill in OKC too
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#63641
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Re: Looking for some help.
Something's "worth" is not what one individual thinks (except to that individual) whether it be something exceptionally low (usually a buyer) or exceptionally high (usually a seller).? Rather, it is
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Charles Kinzer
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#63640
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Re: Looking for some help.
TBF Thats about all a Unimat is worth ! Id say ?50 is about on the money. I have NO IDEA why people pay Hundreds for this little lathe. Its Crazy
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clankennedy2004
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#63639
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Re: Looking for some help.
Fret saw: beware, there are at least two different size eccentrics, depending on which saw you have, earlier or later First found that out when I purchased one online for my early saw and turned out
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Alan Ehrlich
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#63638
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Re: Looking for some help.
If that is the case, you have to change your name from "Quick" to "Almost on time" ??? Best Regards, Andrei mailto:calciu1@... ________________________________ Sent: Tuesday,
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Andrei <calciu1@...>
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#63637
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Re: 795, 895 (etc) DC motors
We discuss cutting speeds an awful lot.? I more or less do nor believe.? As a speed test, I put a 1/4" milling cutter in a Cowells mill.? I had a brass block with a rough edge.? I made one cut at
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John Hutnick
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#63636
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Looking for some help.
I know you all are going to hate me for this, but I was able to purchase a Unimat Jigsaw/fret saw at an estate sale for $4.00 and a Unimat Table saw at the same sale for $3.00 (I later found the
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James Quick
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#63635
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