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Re: refurbishing a Unimat?
¿ªÔÆÌåÓýI have one or two large ingots of ZA12.? I¡¯m not sure if I want to use it to cast the 4th axis harmonic drive or save it for the Gingery Shaper. ? From: [email protected] [mailto:[email protected]] On Behalf Of Bill in OKC too via groups.io
Sent: May 24, 2024 9:44 PM To: [email protected] Subject: Re: [Unimat] refurbishing a Unimat? ? Excellent find! Not what I was reading back a few years, but supports what I remembered...? That's not something I can always count on these days! ? Bill in OKC ? William R. Meyers, MSgt, USAF(Ret.) ? Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Improvise, Adapt, and Overcome. Expect in one hand, expectorate in the other. See which one gets full first. ? ? ? On Friday, May 24, 2024 at 11:36:24 PM CDT, John Dammeyer <johnd@...> wrote: ? ? I found this: ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Charles Kinzer ? Yes.? On the zinc pest, so folks can see what one incarnation looks like, this is from a Varney (notable model railroad manufacturer of yore) diesel switcher that was NOS and still originally wrapped.? When I unwrapped it, I found this.? It was so swelled up that the wheels would not turn. ?
? Charles E. "Chuck" Kinzer ? On Friday, May 24, 2024 at 08:36:59 PM PDT, Dave Seiter <d.seiter@...> wrote: ? ? My father had a diesel engine model from the early 50's that incorporated the motors in the trucks (bogies?).? ?I found the engine in the mid 70's, but by then the "pest" had done its' work.? The frames of the trucks were basically power with a few chunks mixed in.? It was one of the first things I sold on ebay (years later), for quite a lot, because so few of them had been made to begin with, and most were thrown out in the mid-sixties when the pest hit them hard.?? ? -Dave ? On Friday, May 24, 2024 at 07:48:48 AM PDT, Charles Kinzer <ckinzer@...> wrote: ? ? Being pedantic again, magnesium is generally considered a sufficient percentage (although low) to be considered one of the primary alloy elements of Zamak (zinc, alumininm, copper, magnesium).? Iron is not generally considered one and is instead viewed as a trace as is silicon, lead, cadmium, tin, and nickel. ? Zamak (or Zamac - both names are used but Zamak is more correct) is just a quality version of pot metal.? Pot metal being a zinc allow with often random and uncontrolled amounts of other things thrown in. Zamak alloys have consistent specifications.? This makes consistent results and if not contaminated, helps prevent "zinc pest."? Many model railroaders are aware of this where, over time, a "Zamak" casting (which might not be from the most reputable alloy source) can crack, crumble, warp, or swell with age.? I haven't heard of this problem with Unimats so they were probably careful where their alloy came from.? (Although it is possible it has happened on bases or accessory parts somewhere and I'm just not aware.) ? Charles E. "Chuck" Kinzer ? On Friday, May 24, 2024 at 07:10:27 AM PDT, Andrei <calciu1@...> wrote: ? ? Zamak has 5 incarnations that I am aware of. They all contain roughly 3-4% aluminum, 1% Copper, traces of Iron and Magnezium and the rest is Zinc.? ? If you need Zamak for playing with, find some broken down Cuisinart stand mixers. Their entire body is made of Zamak 5. It melts at about 725F so you can smelt it easily at home.? ? From: [email protected] <[email protected]> on behalf of Charles Kinzer <ckinzer@...> ? Just to be a bit pedantic, Zamac (and similar) are zinc alloys, not aluminum although there is some.? Roughly 96% zinc, most of the rest aluminum, and a smattering of magnesium and copper. ? Charles E. "Chuck" Kinzer ? On Friday, May 24, 2024 at 06:35:01 AM PDT, OldToolmaker via groups.io <old_toolmaker@...> wrote: ? ? Joel, |
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Re: refurbishing a Unimat?
Excellent find! Not what I was reading back a few years, but supports what I remembered...? That's not something I can always count on these days! Bill in OKC William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Physics doesn't care about your schedule. The only reason I know anything is because I've done it wrong enough times to START to know better. Expect in one hand, expectorate in the other. See which one gets full first.
On Friday, May 24, 2024 at 11:36:24 PM CDT, John Dammeyer <johnd@...> wrote:
I found this: ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Charles Kinzer
Sent: May 24, 2024 9:11 PM To: [email protected] Subject: Re: [Unimat] refurbishing a Unimat? ? Yes.? On the zinc pest, so folks can see what one incarnation looks like, this is from a Varney (notable model railroad manufacturer of yore) diesel switcher that was NOS and still originally wrapped.? When I unwrapped it, I found this.? It was so swelled up that the wheels would not turn. ?
? Charles E. "Chuck" Kinzer ? On Friday, May 24, 2024 at 08:36:59 PM PDT, Dave Seiter <d.seiter@...> wrote: ? ? My father had a diesel engine model from the early 50's that incorporated the motors in the trucks (bogies?).? ?I found the engine in the mid 70's, but by then the "pest" had done its' work.? The frames of the trucks were basically power with a few chunks mixed in.? It was one of the first things I sold on ebay (years later), for quite a lot, because so few of them had been made to begin with, and most were thrown out in the mid-sixties when the pest hit them hard.?? ? -Dave ? On Friday, May 24, 2024 at 07:48:48 AM PDT, Charles Kinzer <ckinzer@...> wrote: ? ? Being pedantic again, magnesium is generally considered a sufficient percentage (although low) to be considered one of the primary alloy elements of Zamak (zinc, alumininm, copper, magnesium).? Iron is not generally considered one and is instead viewed as a trace as is silicon, lead, cadmium, tin, and nickel. ? Zamak (or Zamac - both names are used but Zamak is more correct) is just a quality version of pot metal.? Pot metal being a zinc allow with often random and uncontrolled amounts of other things thrown in. Zamak alloys have consistent specifications.? This makes consistent results and if not contaminated, helps prevent "zinc pest."? Many model railroaders are aware of this where, over time, a "Zamak" casting (which might not be from the most reputable alloy source) can crack, crumble, warp, or swell with age.? I haven't heard of this problem with Unimats so they were probably careful where their alloy came from.? (Although it is possible it has happened on bases or accessory parts somewhere and I'm just not aware.) ? Charles E. "Chuck" Kinzer ? On Friday, May 24, 2024 at 07:10:27 AM PDT, Andrei <calciu1@...> wrote: ? ? Zamak has 5 incarnations that I am aware of. They all contain roughly 3-4% aluminum, 1% Copper, traces of Iron and Magnezium and the rest is Zinc.? ? If you need Zamak for playing with, find some broken down Cuisinart stand mixers. Their entire body is made of Zamak 5. It melts at about 725F so you can smelt it easily at home.? ? From: [email protected] <[email protected]> on behalf of Charles Kinzer <ckinzer@...> ? Just to be a bit pedantic, Zamac (and similar) are zinc alloys, not aluminum although there is some.? Roughly 96% zinc, most of the rest aluminum, and a smattering of magnesium and copper. ? Charles E. "Chuck" Kinzer ? On Friday, May 24, 2024 at 06:35:01 AM PDT, OldToolmaker via groups.io <old_toolmaker@...> wrote: ? ? Joel, |
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Re: refurbishing a Unimat?
Reading on the subject I did several years ago suggested that zinc pest is caused by adding lead to the pot metal to make it flow easier, and then exposure to humidity. Not a metallurgist, so can't swear it's accurate. And should not find that problem in objects made for true ZAMAK alloys.? Bill in OKC William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Physics doesn't care about your schedule. The only reason I know anything is because I've done it wrong enough times to START to know better. Expect in one hand, expectorate in the other. See which one gets full first.
On Friday, May 24, 2024 at 11:11:03 PM CDT, Charles Kinzer <ckinzer@...> wrote:
Yes.? On the zinc pest, so folks can see what one incarnation looks like, this is from a Varney (notable model railroad manufacturer of yore) diesel switcher that was NOS and still originally wrapped.? When I unwrapped it, I found this.? It was so swelled up that the wheels would not turn. So, if you have Unimat parts having trouble, it may look something like this. Charles E. "Chuck" Kinzer
On Friday, May 24, 2024 at 08:36:59 PM PDT, Dave Seiter <d.seiter@...> wrote:
My father had a diesel engine model from the early 50's that incorporated the motors in the trucks (bogies?).? ?I found the engine in the mid 70's, but by then the "pest" had done its' work.? The frames of the trucks were basically power with a few chunks mixed in.? It was one of the first things I sold on ebay (years later), for quite a lot, because so few of them had been made to begin with, and most were thrown out in the mid-sixties when the pest hit them hard.?? -Dave
On Friday, May 24, 2024 at 07:48:48 AM PDT, Charles Kinzer <ckinzer@...> wrote:
Being pedantic again, magnesium is generally considered a sufficient percentage (although low) to be considered one of the primary alloy elements of Zamak (zinc, alumininm, copper, magnesium).? Iron is not generally considered one and is instead viewed as a trace as is silicon, lead, cadmium, tin, and nickel. Zamak (or Zamac - both names are used but Zamak is more correct) is just a quality version of pot metal.? Pot metal being a zinc allow with often random and uncontrolled amounts of other things thrown in. Zamak alloys have consistent specifications.? This makes consistent results and if not contaminated, helps prevent "zinc pest."? Many model railroaders are aware of this where, over time, a "Zamak" casting (which might not be from the most reputable alloy source) can crack, crumble, warp, or swell with age.? I haven't heard of this problem with Unimats so they were probably careful where their alloy came from.? (Although it is possible it has happened on bases or accessory parts somewhere and I'm just not aware.) Charles E. "Chuck" Kinzer
On Friday, May 24, 2024 at 07:10:27 AM PDT, Andrei <calciu1@...> wrote:
Zamak has 5 incarnations that I am aware of. They all contain roughly 3-4% aluminum, 1% Copper, traces of Iron and Magnezium and the rest is Zinc.?
If you need Zamak for playing with, find some broken down Cuisinart stand mixers. Their entire body is made of Zamak 5. It melts at about 725F so you can smelt it easily at home.?
From: [email protected] <[email protected]> on behalf of Charles Kinzer <ckinzer@...>
Sent: Friday, May 24, 2024 9:59 AM To: [email protected] <[email protected]> Subject: Re: [Unimat] refurbishing a Unimat? ?
Just to be a bit pedantic, Zamac (and similar) are zinc alloys, not aluminum although there is some.? Roughly 96% zinc, most of the rest aluminum, and a smattering of magnesium and copper.
Charles E. "Chuck" Kinzer
On Friday, May 24, 2024 at 06:35:01 AM PDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:
Joel,
A DB200 is made of cast iron. An SL is made of Zamac (a form of cast aluminum). Both are good machines although I prefer the cast iron DB200 because of its weight. Dick -- http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972 ?SMALL TURRET TOOL POST PLANS? ?LARGE TURRET TOOL POST PLANS ?MINI- LATHE CARRIAGE LOCK PLANS ?SMALL QC TOOL POST PLANS? ?QUICK CHANGE LATHE TURRET ?MINI LATHE COMPOUND PIVOT MODIFICATION |
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Re: refurbishing a Unimat?
¿ªÔÆÌåÓýI found this: ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Charles Kinzer
Sent: May 24, 2024 9:11 PM To: [email protected] Subject: Re: [Unimat] refurbishing a Unimat? ? Yes.? On the zinc pest, so folks can see what one incarnation looks like, this is from a Varney (notable model railroad manufacturer of yore) diesel switcher that was NOS and still originally wrapped.? When I unwrapped it, I found this.? It was so swelled up that the wheels would not turn. ?
? Charles E. "Chuck" Kinzer ? On Friday, May 24, 2024 at 08:36:59 PM PDT, Dave Seiter <d.seiter@...> wrote: ? ? My father had a diesel engine model from the early 50's that incorporated the motors in the trucks (bogies?).? ?I found the engine in the mid 70's, but by then the "pest" had done its' work.? The frames of the trucks were basically power with a few chunks mixed in.? It was one of the first things I sold on ebay (years later), for quite a lot, because so few of them had been made to begin with, and most were thrown out in the mid-sixties when the pest hit them hard.?? ? -Dave ? On Friday, May 24, 2024 at 07:48:48 AM PDT, Charles Kinzer <ckinzer@...> wrote: ? ? Being pedantic again, magnesium is generally considered a sufficient percentage (although low) to be considered one of the primary alloy elements of Zamak (zinc, alumininm, copper, magnesium).? Iron is not generally considered one and is instead viewed as a trace as is silicon, lead, cadmium, tin, and nickel. ? Zamak (or Zamac - both names are used but Zamak is more correct) is just a quality version of pot metal.? Pot metal being a zinc allow with often random and uncontrolled amounts of other things thrown in. Zamak alloys have consistent specifications.? This makes consistent results and if not contaminated, helps prevent "zinc pest."? Many model railroaders are aware of this where, over time, a "Zamak" casting (which might not be from the most reputable alloy source) can crack, crumble, warp, or swell with age.? I haven't heard of this problem with Unimats so they were probably careful where their alloy came from.? (Although it is possible it has happened on bases or accessory parts somewhere and I'm just not aware.) ? Charles E. "Chuck" Kinzer ? On Friday, May 24, 2024 at 07:10:27 AM PDT, Andrei <calciu1@...> wrote: ? ? Zamak has 5 incarnations that I am aware of. They all contain roughly 3-4% aluminum, 1% Copper, traces of Iron and Magnezium and the rest is Zinc.? ? If you need Zamak for playing with, find some broken down Cuisinart stand mixers. Their entire body is made of Zamak 5. It melts at about 725F so you can smelt it easily at home.? ? From: [email protected] <[email protected]> on behalf of Charles Kinzer <ckinzer@...> ? Just to be a bit pedantic, Zamac (and similar) are zinc alloys, not aluminum although there is some.? Roughly 96% zinc, most of the rest aluminum, and a smattering of magnesium and copper. ? Charles E. "Chuck" Kinzer ? On Friday, May 24, 2024 at 06:35:01 AM PDT, OldToolmaker via groups.io <old_toolmaker@...> wrote: ? ? Joel, |
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Re: refurbishing a Unimat?
Yes.? On the zinc pest, so folks can see what one incarnation looks like, this is from a Varney (notable model railroad manufacturer of yore) diesel switcher that was NOS and still originally wrapped.? When I unwrapped it, I found this.? It was so swelled up that the wheels would not turn. So, if you have Unimat parts having trouble, it may look something like this. Charles E. "Chuck" Kinzer
On Friday, May 24, 2024 at 08:36:59 PM PDT, Dave Seiter <d.seiter@...> wrote:
My father had a diesel engine model from the early 50's that incorporated the motors in the trucks (bogies?).? ?I found the engine in the mid 70's, but by then the "pest" had done its' work.? The frames of the trucks were basically power with a few chunks mixed in.? It was one of the first things I sold on ebay (years later), for quite a lot, because so few of them had been made to begin with, and most were thrown out in the mid-sixties when the pest hit them hard.?? -Dave
On Friday, May 24, 2024 at 07:48:48 AM PDT, Charles Kinzer <ckinzer@...> wrote:
Being pedantic again, magnesium is generally considered a sufficient percentage (although low) to be considered one of the primary alloy elements of Zamak (zinc, alumininm, copper, magnesium).? Iron is not generally considered one and is instead viewed as a trace as is silicon, lead, cadmium, tin, and nickel. Zamak (or Zamac - both names are used but Zamak is more correct) is just a quality version of pot metal.? Pot metal being a zinc allow with often random and uncontrolled amounts of other things thrown in. Zamak alloys have consistent specifications.? This makes consistent results and if not contaminated, helps prevent "zinc pest."? Many model railroaders are aware of this where, over time, a "Zamak" casting (which might not be from the most reputable alloy source) can crack, crumble, warp, or swell with age.? I haven't heard of this problem with Unimats so they were probably careful where their alloy came from.? (Although it is possible it has happened on bases or accessory parts somewhere and I'm just not aware.) Charles E. "Chuck" Kinzer
On Friday, May 24, 2024 at 07:10:27 AM PDT, Andrei <calciu1@...> wrote:
Zamak has 5 incarnations that I am aware of. They all contain roughly 3-4% aluminum, 1% Copper, traces of Iron and Magnezium and the rest is Zinc.?
If you need Zamak for playing with, find some broken down Cuisinart stand mixers. Their entire body is made of Zamak 5. It melts at about 725F so you can smelt it easily at home.?
From: [email protected] <[email protected]> on behalf of Charles Kinzer <ckinzer@...>
Sent: Friday, May 24, 2024 9:59 AM To: [email protected] <[email protected]> Subject: Re: [Unimat] refurbishing a Unimat? ?
Just to be a bit pedantic, Zamac (and similar) are zinc alloys, not aluminum although there is some.? Roughly 96% zinc, most of the rest aluminum, and a smattering of magnesium and copper.
Charles E. "Chuck" Kinzer
On Friday, May 24, 2024 at 06:35:01 AM PDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:
Joel,
A DB200 is made of cast iron. An SL is made of Zamac (a form of cast aluminum). Both are good machines although I prefer the cast iron DB200 because of its weight. Dick -- http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972 ?SMALL TURRET TOOL POST PLANS? ?LARGE TURRET TOOL POST PLANS ?MINI- LATHE CARRIAGE LOCK PLANS ?SMALL QC TOOL POST PLANS? ?QUICK CHANGE LATHE TURRET ?MINI LATHE COMPOUND PIVOT MODIFICATION |
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Re: Saw a Unimat in the wild - used for model shipbuilding
¿ªÔÆÌåÓýTotally cool!Best Regards John On May 24, 2024, at 5:24?PM, Robert Vine <robert.vine36@...> wrote:
? Looks terrific. Well done. Best regards Rob On Fri, 24 May 2024, 22:16 Charles Kinzer via , <ckinzer=[email protected]> wrote:
<20240510_0006 - LoRes.JPG> <20240510_0007 - LoRes.JPG> <20240510_0008 - LoRes.JPG> <20240510_0011 - LoRes.JPG> <20240510_0015 - LoRes.JPG> <20240510_0006 - LoRes.JPG> |
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Re: Saw a Unimat in the wild - used for model shipbuilding
Looks terrific. Well done. Best regards Rob On Fri, 24 May 2024, 22:16 Charles Kinzer via , <ckinzer=[email protected]> wrote:
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Saw a Unimat in the wild - used for model shipbuilding
¿ªÔÆÌåÓý
After the comment that the group seemed to have gotten quiet, decided to pass this along.
I was recently at the Maritime Museum in Oxnard, CA and they had a display of about a dozen ships made by one craftsman, Edward Marple, including his workbench.? It has the ship he was building when he passed away.? Notice the Unimat pointed at with my not
very subtle arrow.? It has the jointer attachment.? The motorized contraption at the front right of the desk is an old dental drill.? He assembled with planks and wood dowels like the real thing.? They said up to 8.000 wood dowels in one of his models.
Closer photos of the Unimat:
And just a few of his many ship models they had on display.
Charles E. "Chuck" Kinzer
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Re: refurbishing a Unimat?
Or at least platinum. I've made a few of my own accessories due to those high costs. Bill in OKC? William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Physics doesn't care about your schedule. The only reason I know anything is because I've done it wrong enough times to START to know better. Expect in one hand, expectorate in the other. See which one gets full first.
On Friday, May 24, 2024 at 12:09:30 PM CDT, Mehmood via groups.io <mehmood.naqshbandi@...> wrote:
Some of the accessories are cast in gold, going by the eBay prices their sellers are asking. Just saying. On 24 May 2024, at 18:02, John Dammeyer <johnd@...> wrote:
Mine under the chipped paint appears to be a zinc alloy.? I have ZA12 ingots I bought for making the Gingery Shaper since Zinc behaves more like cast iron than aluminum for damping vibrations. ? In case the photo doesn¡¯t make it through it has a CSA logo on it.? Part number 14412, Model DB200 Canadian Edelstaal Inc. Toronto Ontario. <image001.jpg> ? From: [email protected] [mailto:[email protected]] On Behalf Of Alan Ehrlich ? Right Bill, I think many if not most DB200s were alloy. It¡¯s the MK1 and Mk2 versions I have which all are cast iron. ? Alan Alan Ehrlich Geneva, Switzerland ? ? From: [email protected] <[email protected]> On Behalf Of Bill in OKC too via groups.io ? Dick, I have a Unimat here that says it's a DB 200, but is light alloy just like my SL-1000. Both machines were used when I got them, so may be Frankenmats rather that as shipped. I've not made any measurements to compare, but to the naked eye they're identical except for the label. ? Bill in OKC? ? William R. Meyers, MSgt, USAF(Ret.) ? Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Improvise, Adapt, and Overcome. Expect in one hand, expectorate in the other. See which one gets full first. ? ? ? On Friday, May 24, 2024 at 08:34:59 AM CDT, OldToolmaker via groups.io <old_toolmaker@...> wrote: ? ? Joel, |
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Re: refurbishing a Unimat?
¿ªÔÆÌåÓýMine under the chipped paint appears to be a zinc alloy.? I have ZA12 ingots I bought for making the Gingery Shaper since Zinc behaves more like cast iron than aluminum for damping vibrations. ? In case the photo doesn¡¯t make it through it has a CSA logo on it.? Part number 14412, Model DB200 Canadian Edelstaal Inc. Toronto Ontario. ? From: [email protected] [mailto:[email protected]] On Behalf Of Alan Ehrlich
Sent: May 24, 2024 9:47 AM To: [email protected]; wmrmeyers@... Subject: Re: [Unimat] refurbishing a Unimat? ? Right Bill, I think many if not most DB200s were alloy. It¡¯s the MK1 and Mk2 versions I have which all are cast iron. ? Alan Alan Ehrlich Geneva, Switzerland ? ? From: [email protected] <[email protected]> On Behalf Of Bill in OKC too via groups.io ? Dick, I have a Unimat here that says it's a DB 200, but is light alloy just like my SL-1000. Both machines were used when I got them, so may be Frankenmats rather that as shipped. I've not made any measurements to compare, but to the naked eye they're identical except for the label. ? Bill in OKC? ? William R. Meyers, MSgt, USAF(Ret.) ? Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Improvise, Adapt, and Overcome. Expect in one hand, expectorate in the other. See which one gets full first. ? ? ? On Friday, May 24, 2024 at 08:34:59 AM CDT, OldToolmaker via groups.io <old_toolmaker@...> wrote: ? ? Joel, |
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Re: refurbishing a Unimat?
And in that pedantic vein, there are several different alloys called zamak with different proportions of allowing materials in them. Sitting on the shelf just out of reach are three ingots of ZAMAK 3. A quick search says that's the most commonly used alloy, though ZA2 is supposed to be harder and stronger. The ingots seem to be quite a bit heavier than my SL. But 4% aluminum is common to all the ZAMAK alloys. Though there are a bunch of zinc-aluminum alloys that aren't ZAMAC. It's another rabbit hole! Bill in OKC? William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Physics doesn't care about your schedule. The only reason I know anything is because I've done it wrong enough times to START to know better. Expect in one hand, expectorate in the other. See which one gets full first.
On Friday, May 24, 2024 at 08:59:36 AM CDT, Charles Kinzer <ckinzer@...> wrote:
Just to be a bit pedantic, Zamac (and similar) are zinc alloys, not aluminum although there is some.? Roughly 96% zinc, most of the rest aluminum, and a smattering of magnesium and copper. Charles E. "Chuck" Kinzer
On Friday, May 24, 2024 at 06:35:01 AM PDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:
Joel, A DB200 is made of cast iron. An SL is made of Zamac (a form of cast aluminum). Both are good machines although I prefer the cast iron DB200 because of its weight. Dick -- http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972 ?SMALL TURRET TOOL POST PLANS? ?LARGE TURRET TOOL POST PLANS ?MINI- LATHE CARRIAGE LOCK PLANS ?SMALL QC TOOL POST PLANS? ?QUICK CHANGE LATHE TURRET ?MINI LATHE COMPOUND PIVOT MODIFICATION |
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Re: refurbishing a Unimat?
Dick, I have a Unimat here that says it's a DB 200, but is light alloy just like my SL-1000. Both machines were used when I got them, so may be Frankenmats rather that as shipped. I've not made any measurements to compare, but to the naked eye they're identical except for the label. Bill in OKC? William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY! Physics doesn't care about your schedule. The only reason I know anything is because I've done it wrong enough times to START to know better. Expect in one hand, expectorate in the other. See which one gets full first.
On Friday, May 24, 2024 at 08:34:59 AM CDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:
Joel, A DB200 is made of cast iron. An SL is made of Zamac (a form of cast aluminum). Both are good machines although I prefer the cast iron DB200 because of its weight. Dick -- http://www.homemadetools.net/ forum/?OFF- SET-tailstock-center-65965#post105972 ?SMALL TURRET TOOL POST PLANS? ?LARGE TURRET TOOL POST PLANS ?MINI- LATHE CARRIAGE LOCK PLANS ?SMALL QC TOOL POST PLANS? ?QUICK CHANGE LATHE TURRET ?MINI LATHE COMPOUND PIVOT MODIFICATION |
Bill in OKC too
John Entwistle
