Re: Mistery Unimat 3 with interesting modifications
Julius and John,? You're welcome to the articles. The PDFs are of individual issues so rather than trying to screenshot the articles it's easier to send the whole issue - who knows; there might be
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Clive
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#64047
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Re: Mistery Unimat 3 with interesting modifications
I would also appreciate a scan.? Thanks for any help
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John Hutnick
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#64046
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Re: Mistery Unimat 3 with interesting modifications
Hello: Indeed ... The issue with the "Unimat 3 Split Nut Lead Screw Clutch" article is from 07/2005 (#107 p.44) and issue with the "Friction Dial Handwheels for the Unimat 3" article (photo I posted)
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Julius Henry Marx
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#64045
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Re: Mistery Unimat 3 with interesting modifications
As luck would have it I have MEW in PDF formal - I must look up those issues. Thanks for the heads-up Clive
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Clive
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#64044
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Re: Honing turning tools
In Trade School I learned how to grind a lathe tool free hand on a pedestal grinder. I still use this skill today. We learned to hand grind to within one degree of angle and maintain a single facet.
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OldToolmaker
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#64043
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Re: Mistery Unimat 3 with interesting modifications
Hello: It seesm to have been done by a chap called Maurice Rhodes. Published in Model Engineer Workshop magazine #107 and #112. The only available source and rather expensive proposition just to have
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Julius Henry Marx
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#64042
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Re: Mystery Unimat 3 with interesting modifications
Hello: A closer look does not improve things much. (see attached blow-up) But yes, it would seem (?) that it is just a motorised carriage leadscrew. I was hoping that someone had devised a relatively
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Julius Henry Marx
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#64041
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Re: Mistery Unimat 3 with interesting modifications
I have a Hector lathe which is based on the Unimat 3 and have thought about converting it to rack and pinion drive for the carriage as all that twirling of the leadscrew? handwheel is a nuisance.
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Clive
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#64040
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Re: Mistery Unimat 3 with interesting modifications
Yep, it looks like an ¡®improved¡¯ version of a cross slide - presumably it can be mounted at angles for taper turning¡ Tool holding looks much more secure than the original U3 offering!
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Peter Brooks
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#64039
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Re: Mistery Unimat 3 with interesting modifications
Isn't the handwheel (item 2) just for moving the cross-slide?
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g steinback
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#64038
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Re: Honing turning tools
Herman, The answer to your first question is yes, Honing a cutting tool with one cutting edge like a traditional metal lathe tool bit, or a wood chisel blade is the same principle / technique. The
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Nate Crouch
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#64037
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Re: Mistery Unimat 3 with interesting modifications
Hello: I should be receiving the package in a fortnight or less. I will post the purveyor's data before testing the springs if it is important to you. But first I want to make absolutely sure that
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Julius Henry Marx
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#64036
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Re: Knife tools
Hello Carl: The original material quality (important aspect) not withstanding, if it has been in use for 50 years it was quite obviously (very) well made. Given how difficult it is to get such a tool
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Julius Henry Marx
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#64035
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Re: Mistery Unimat 3 with interesting modifications
So tell us who this Chinese supplier is.
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John Hutnick
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#64034
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Re: Knife tools
Hi Gang: I made my own cut-off tool from a 1/4" tool bit. I plunged ground off a 1/2" from the end to 0.04", been using it for 50 years. Carl. PS: I use my Unimat to resize my model railroad wheels.
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Carl
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#64033
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Mistery Unimat 3 with interesting modifications
Hello: Long time no see. 8^) Absence due to having been busy with a number of things, quite a few of them directly related to putting my U3 in order. Others less so, but such is life. In the course of
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Julius Henry Marx
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#64032
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Re: Knife tools
Now for Bill or anyone here, my goal is not to make tools or fail miserably.? I just want to do things for my model trains. So I follow what I have noted before:? buy what you can, and then make
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John Hutnick
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#64031
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Re: Cast iron Unimat lathe weight?
With milling column, chuck and quill lever it is 11.05 kg. This one has original induction motor.
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Tinkerer22
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#64030
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Re: Knife tools
Best of all would to be to make our own. :) Trying to do that, even if you fail miserably and repeatedly, is educational. ;) Thomas Edison is reported to have said?¡®Results! Why, man, I have gotten
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Bill in OKC too
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#64029
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Re: Knife tools
I looked at the Komet, 2.3mm wide, 110 euro. You can buy a Sherline cutoff tool only 1mm wide.? Kaiser Thinbit goes down to .025.? Arthur R. Warner sells 1/32 and 1/64.? All are US made.? So for
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John Hutnick
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#64028
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