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Re: Buying a mini-lathe
开云体育? My post went by information found on two very well known websites and included links to each, so there was absolutely no need to "claim" anything. See for yourself:? . ?And this message thread - with pictures - of actual . Clue: These ChiCom imports evolve over time. Your machine may well have come with a gear to reverse the leadscrew independently of the spindle, I really don't know, but it seems exceedingly obvious that many others did not. That is, unless you think the guys over at Fignoggles AND the various 8x owners over on the CNC Zone, all have some conspiratorial reason to lie to the whole world about their very own 8x machines? Keep the prices down maybe? ? ?If you'd have just clicked those links above that were included in the original post, you would have realized everything was based on what 8x owners were saying about their own machines. It would have saved you from assuming things that ain't so. Ah well, I'll just kindly assume you must have been having a bad day and leave it at that. ?Cheers, ?John Z. On 10/17/2011 9:45 PM, Byron wrote: ? |
Re: Buying a mini-lathe
to repeat myself, i checked with hf central, and they said coupon good. you can't double coupins, though.
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john b On Oct 15, 2011, at 10:00 PM, "stantonleman" <standehaven@...> wrote:
I don't believe an extra 20% off is available for the HF 8x12. It seems HF has changed their coupon and discount code policies. |
Re: Buying a mini-lathe
I emailed HF, and they said 20% off coupons apply to lathes. Exceptions are welders, jacks, compressors, and tool cabinets. john b On Oct 15, 2011, at 11:35 PM, "whispers [HM]" <whispers007@...> wrote:
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Re: Where to buy magnetic-base work lamp
hmmm as an optical engineer, let me add my 2 cents about uv and lamps. Most plastics will absorb uv and are good as filters. Exception is silicone and thin acrylic. Regarding led emission of uv, their published spectra show little or no uv even from blue types. In addition, they are encapsulated in epoxy, which absorbs uv. The cf's do emit uv, but if you keep a shade between you and direct exposure, no problem.
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About uv from lamps causing cancer, I doubt it, since sunlight has much more intense uv, and it takes long exposure times to get the skin destruction seen in older beach bunnies. But its thought-provoking. The HF fluorescent has a plastic cover over the cicular lamp. Im surprised you say metal halogen bulbs emit uv, since the spectra of hot emitters obeys a Planck spectrum which falls off steeply at high frequencies with a peak according to Wien's law: temp x wavelength = 3000. Thus a bulb at 3000 deg will peak at 1 micron, whereas uv begins at .4 and above. Im not sure you wanted to hear all this... On a practical note, I notice shades I buy for floor lamps have plastic liners which crumble after only a little use with cf - a typical sign of uv degredation of the plastic. Based on that, Im leery of them. Anyone else notice this? john b On Oct 17, 2011, at 10:29 PM, "Roy" <roylowenthal@...> wrote:
A lot of the relatively cheap, bright ones are phosphorized blue LEDs. |
Re: Where to buy magnetic-base work lamp
A lot of the relatively cheap, bright ones are phosphorized blue LEDs.
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Roy --- In 7x12minilathe@..., Jerry Durand <jdurand@...> wrote:
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Re: Where to buy magnetic-base work lamp
The retail halogen lamps usually have a filter installed as a cover to prevent inadvertent contact with the halogen bulb. On some of them, it's even labeled with a warning that it must be installed.
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Roy --- In 7x12minilathe@..., lists <Stuartlists@...> wrote:
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Re: Buying a mini-lathe
The harbor freight 8x12 (measures same as lathemaster 8x14) is dilivered from harbor freight with a extra gear to reverse the lead screw. You don't have to make one as it comes in the box.
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Yes to cut left hand threads you have to bolt on the extra gear and put on the right gears for the thread pitch you wnat to cut but left hand threads don't require fabricating anything. But unlike the 7x they are metyal gears that work quite well It is amazing how much non owners of the HF 8x12 claim to know about what it does not include. I also had the HF shortest 7x and gave it away after I got the 8x12 Yes I also eventually got a 12x36 but the 8x12 is a keeper Really had no need for the 7x as everything it could do the 8x could do better --- In 7x12minilathe@..., Andrew Franks <andyf1108@...> wrote:
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Re: Buying a mini-lathe
Just saw another one: HFT20
On Mon, 17 Oct 2011, Vince Vielhaber wrote:
Vince. -- Michigan VHF Corp. |
Re: Where to buy magnetic-base work lamp
MERTON B BAKER
Jerry, I have a fireworks question. Email me off list, would you? Mert
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-----Original Message-----
From: 7x12minilathe@... [mailto:7x12minilathe@...]On Behalf Of Jerry Durand Sent: Monday, October 17, 2011 12:13 PM To: 7x12minilathe@... Subject: Re: [7x12minilathe] Where to buy magnetic-base work lamp On 10/17/2011 07:36 AM, lists wrote: UV is certainly harmful to the skin and eyes, the $64,000 question isJust to toss another wrench into the gears of life, many if not most white LEDs are actually UV LEDs with the same type phosphors* in the plastic as a florescent light has. So they, too, can emit UV. * some use quantum dots instead. A very few will use multiple LED die in 3-5 colors, but that's normally only in devices that are color changing or for video/film lighting. -- Jerry Durand, Durand Interstellar, Inc. www.interstellar.com tel: +1 408 356-3886, USA toll free: 1 866 356-3886 Skype: jerrydurand ------------------------------------ Yahoo! Groups Links |
Re: Where to buy magnetic-base work lamp
Jerry Durand
On 10/17/2011 07:36 AM, lists wrote:
UV is certainly harmful to the skin and eyes, the $64,000 question isJust to toss another wrench into the gears of life, many if not most white LEDs are actually UV LEDs with the same type phosphors* in the plastic as a florescent light has. So they, too, can emit UV. * some use quantum dots instead. A very few will use multiple LED die in 3-5 colors, but that's normally only in devices that are color changing or for video/film lighting. -- Jerry Durand, Durand Interstellar, Inc. www.interstellar.com tel: +1 408 356-3886, USA toll free: 1 866 356-3886 Skype: jerrydurand |
Re: Where to buy magnetic-base work lamp
lists
In article <OOEBKAFCDAGNJFABEHBHOELOHCAA.mertbaker@...>,
MERTON B BAKER <mertbaker@...> wrote: It's the UV end of the solar spectrum that causedUV is certainly harmful to the skin and eyes, the $64,000 question is whether manufacturers take the issue seriously and provide filter coatings on the outside of the tubes. I was browsing a lighting catalogue a while back and looking at small Halogen lamps, the sort often used for display lighting etc. The catalogue made it clear that some types were unsuitable for use in "task lighting" because of UV radiation, unless the fitment had some sort of UV filtering in its construction. A different range of otherwise identical lamps had UV filtering built into its front lens and was OK. It all depends on how close the lamp is to the eyes, in the above catalogue it specified a minimum distance from the eye for the non-filtered type which was much greater than for the type with the filter. Halogens are, of course, an incandescent type lamp. Fluorescent have been widely used for many years as general lighting and I know of no statistics suggesting they are any particular risk but they are, of course, normally mounted on the ceiling, high up and some distance from the eye. It will be when we use CFLs in table lamps, reading lamps and local lighting by our lathes that the issues arise. Any future statistics, however, I suspect will be heavily distorted by the widespread, deliberate use of UV lighting (blacklighting) in clubs, discos etc. Any rise in eye problems will be more likely caused by this than "stray" radiation within the home or workshop. -- Stuart |
Re: Buying a mini-lathe
Try TOOL20 Also go to the slick deals page for HF, I understand you
can enter one of the coupon codes online and it'll work. On Sat, 15 Oct 2011, Clifford wrote:
Vince. -- Michigan VHF Corp. |
Re: Buying a mini-lathe
MERTON B BAKER
When I write about the virtues of the 7x lathes, it's from the standpoint of
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a hobbyist or student. I agree, it's not a heavy weight, and lacks the power to hog off steel. If you are running a machine shop, it's just handy to have for a small job when the other machines are tied up with job orders. Compare it with the Unimats or the Sherline as a beginner's, or hobby lathe, starting with the initial cost, and you see where I'm coming from. Mert -----Original Message-----
From: 7x12minilathe@... [mailto:7x12minilathe@...]On Behalf Of john brookes Sent: Sunday, October 16, 2011 11:26 PM To: 7x12minilathe@... Subject: Re: [7x12minilathe] Re: Buying a mini-lathe I hear leftie threads exist on some blog sites, but I am a right thread guy. ;) j On Oct 16, 2011, at 7:37 PM, SirJohnOfYork <steelchipper@...> wrote: I wouldn't advise being too quick to just dismiss being able to cut left hand threads, or to power feed away from the chuck, or bore out a workpiece where you'd have the chuck going in reverse and the tool feeding into the far side of the hole where you can see it, etc. - In short, being able to reverse the direction of the leadscrew (independently of the spindle direction) is not necessarily some minor little detail to carelessly toss away, so to speak. A little bit of reading background might be in order: Here, the guys at Fignoggle did a comparison of the 8x versus the 7x and the 9x . And perhaps most importantly, here shows some 8x12/14 owners discussing their not insignificant efforts to add the necessary tumbler gears, so they can do all that reversible leadscrew stuff mentioned above. Pictures included. Clearly, at least some percentage of 8x12/14 owners do not find a reversible leadscrew to be an unnecessary "frill." If that 7x, 8x, 9x or whatever size lathe is going to be the only lathe you own, I highly recommend doing your homework on this stuff for yourself. For example, a number of the members here own more than one lathe. That can definitely color perceptions. An "only lathe" is not at all the same as a small manual lathe that is an addition to go along with other bigger lathe(s) and CNC machines and such. An "only lathe" has do do everything lathe related that you might ever run across, with no hopping about to other machines you do not have. :-) More info & understanding is always better: The 7x already has the variable speed and tumbler gears and whatnot, but it is a small light duty machine, incapable of taking deeper cuts like the bigger machines can do, so some operations can take a fair bit longer to get done. Then again, I remember seeing a video from somebody right here on on this list taking 1/4" deep cuts into steel with a carefully prepared HSS turning tool in a well tuned 7x. Hopefully somebody here will remember that video and re-post a link - it just shows what is possible with these things, just as those 8x photos linked to above do - in that case of course adding tumbler gears in order to have a reversible leadscrew. Taking the 8x12/14 and adding a variable speed control and lever operated tumbler gears for a reversible leadscrew would make for quite a machine! Until, that is, somebody else notes how nice it would be to have a quick change gearbox so you can just shift a few levers around to select a desired feed rate or thread pitch, and, of course, a powered cross slide. :-) I personally can live with the more "primitive" method of manually swapping change gears around as needed for threading operations and such, but not having a reversible leadscrew is just going a bit too "primitive" for me, heavier mass lathe bed and deeper cut capability right out of the box or no. But thats just me with my one (1) 7x12 mini-lathe and my one (1) X2 mini-mill with which I have to do everything. I should note again, though, how so many members and group owners/moderators on these various metalworking lists, seem to eventually end up getting 12x or larger lathes and much bigger mills and such. Running into jobs too big to fit little benchtop machines can be really bothersome and may lead to major purchases for some folks. This "hobby" can sure be heck on the wallet. :-) In any case, best of luck! John Z. On 10/16/2011 11:08 AM, nissan.370z wrote: That would be awesome but I dont compare prices when they are that old of deals. I paid $440 for a brand new 7x12 last week and wondering if I should return it and get the 8x12 if it is that much better. A friend of mine is going to order one Monday if he finds a working coupon code. I still have yet to find one that will work on that lathe. The current price before code isnt bad, but by the time you add shipping and tax that is more than I am spending right now (I will wait another year or two and hopefully be buying either a used decent size SouthBend or a new 12x-14x lathe with like 36-40 bed roughly if I have the room for it I plan by then). So at $440 and no tax (plus shipping cheaper than HF charges), should I keep the 7x12 or return it and get the HF 8x lathe? (if a working coupon code is shown to me) Or keep the 7x12 and learn on it till I can get a much larger lathe like I want that will blow the 8x away? I am conflicted now that I seen this deal and possible coupon? |
Re: Buying a mini-lathe
Andrew Franks
开云体育
Though it does boast variable speed control, my Weiss 7x12 lathe is similar in many respects to an 8x, and came without?a leadscrew reverse . I soon decided that a?reverse would be helpful, not only for LH threading but also for plain turning up to a shoulder at the outside end of the work. In the end, the reverse proved pretty easy to implement.
? I read up on fitting tumbler arrangements to 8x lathes, but as you say, the effort involved seemed "not insignificant". Realising that reverse would not be?needed very often, I went for a single idler gear which could be interposed between the spindle gear and the topmost gear on the banjo. The simplest?option was be to drill/tap a hole in the headstock into which a stud carrying the extra gear could be screwed when required, but the lathe was under warranty and I doubted my ability to drill in exactly the right place to achieve a good mesh with the spindle gear. Accordingly, I mounted the gear on an arm pivoting around an existing bolt into the headstock, so it can be swung into position when required,?the banjo being repositioned to make room for it. Full details at <??> ? Not as convenient as a proper tumbler reverse, but only takes a few moments to?bring into play on the rare occasions when?needed. ? Andy? To: 7x12minilathe@... From: steelchipper@... Date: Sun, 16 Oct 2011 19:37:11 -0400 Subject: Re: [7x12minilathe] Re: Buying a mini-lathe ?
?I wouldn't advise being too quick to just dismiss being able to cut left hand threads, or to power feed away from the chuck, or bore out a workpiece where you'd have the chuck going in reverse and the tool feeding into the far side of the hole where you can see it, etc. - In short, being able to reverse the direction of the leadscrew (independently of the spindle direction) is not necessarily some minor little detail to carelessly toss away, so to speak. ?A little bit of reading background might be in order: ?Here, the guys at Fignoggle did a . ?And perhaps most importantly, here shows some 8x12/14 owners discussing their not insignificant efforts to , so they can do all that reversible leadscrew stuff mentioned above. Pictures included. Clearly, at least some percentage of 8x12/14 owners do not find a reversible leadscrew to be an unnecessary "frill."................. . |
Re: compare mini lathe to 6" atlas
MERTON B BAKER
MessageSears also sold another lathe made by AA. Mert
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-----Original Message-----
From: 7x12minilathe@... [mailto:7x12minilathe@...]On Behalf Of Michael Jablonski Sent: Sunday, October 16, 2011 7:46 PM To: 7x12minilathe@... Subject: RE: [7x12minilathe] compare mini lathe to 6" atlas Well you're comparing products that really don't compare other than all of them being lathes. The Atlas and South Bend lathes were larger heavier production machines that would run for years without failure with good general maintenance. The South Bend was the in my opinion was the top of the heap. Most of the South Bend lathes had quick change gear boxes making threading changes and feed changes in a couple of seconds. I've never seen a 7x with a quick change gear box. They all use removable gears sets which is time consuming. The South Bend used a clutch system for the power feeds and was driven from a keyway cut into the length of the Lead Screw which also served double duty in keeping chips out of the split nut.. This saved wear and tear of the slip nut and lead screw threads which were only used for threading. The split nut was engaged with a lever, the power feed was engaged by tightening a knob on the apron to engage the clutch. The South Bend also had power feed on the cross slide. The Atlas was a little lighter than the South Bend but still a very good machine. It used the lead screw for both threading and power feeds. (Someone can correct me if I am wrong on the lead screw.) Atlas made lathes for Sears under the Craftsman name, so if you run across a Craftsman lathe it is most likely an Atlas. Once Sears started selling lots of these Atlas/Craftsman lathes, Montgomery Wards wanted in, so they contracted with Logan Engineering to built them a lathe to compete with Sears with. The first Logan lathes were sold through Montgomery Wards under their Power Kraft label. A year later Logan started manufacturing lathes under their own name and the Logan Lathe was born. The South Bend lathes started out in 1906. Later they moved into the old Studebaker auto plant which had closed its doors in South Bend Indiana. Through buy outs and mergers with LeBlonde and others, they ended up going through several companies and I believe ended up as part of Grizzly Industrial Inc. The Logan/Wards were built in Chicago, Illinois from 1940 - 1971. The Atlas lathes were built in Kalamazoo, Michigan from 1936 - 1980??? If you buy one of these larger work horses expect to do some rebuilding on them. They have probably have lots of years of use on them but with a little rebuilding they will be running long after you are gone. Michael -----Original Message----- From: 7x12minilathe@... [mailto:7x12minilathe@...] On Behalf Of gwelo62 Sent: Sunday, October 16, 2011 1:15 PM To: 7x12minilathe@... Subject: [7x12minilathe] compare mini lathe to 6" atlas Some of you gents have used a wide array of lathes. How do the 7x and 8x lathes compare to an Atlas or South Bend (size excepted)? Cheers |
Re: Where to buy magnetic-base work lamp
Michael Taglieri
If I understand you right, you're essentially saying that the millions
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and millions of people in the US who use CF bulbs are all ruining their eyes. Is there some actual evidence you can show us for this? Mike Taglieri miket_nyc@... Everyone has his reasons. - Jean Renoir "The Rules of the Game" ----- Original Message -----
From: "Andrew" <akayton1@...> To: <7x12minilathe@...> Sent: Saturday, October 15, 2011 3:27 AM Subject: Re: [7x12minilathe] Where to buy magnetic-base work lamp The quality of light is what will damage your eyes over time. The the CF |
Re: compare mini lathe to 6" atlas
Michael Taglieri
The Atlas was a little lighter than the South Bend but still a very goodThis is true for all the Craftsman lathes but the little 6" model made by Dunlap (). I used to own one of these, and it was pretty dreadful compared to the Chinese minilathes. It had about a 1/4" bore in the spindle, had no graduations on anything, and used #0 Morse tapers. Better than no lathe at all, but the Atlas-made lathes were far better. Mike Taglieri miket_nyc@... Everyone has his reasons. - Jean Renoir "The Rules of the Game" |
Re: Buying a mini-lathe
I just happen to have it handy...
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mike --- In 7x12minilathe@..., SirJohnOfYork <steelchipper@...> wrote:
|
Re: compare mini lathe to 6" atlas
开云体育Well
you're comparing products that really don't compare other than all of them being
lathes.
?
The
Atlas and South Bend lathes were larger heavier production machines that would
run for years without failure with good general maintenance. The South Bend was
the in my opinion was the top of the heap.?Most?of the South Bend
lathes had quick change gear boxes making threading changes and feed changes in
a couple of seconds. I've never seen a 7x with a quick change gear box. They all
use removable gears sets which is time consuming. The South Bend used a clutch
system for the power feeds and was driven from a keyway cut into the length
of?the Lead Screw which also served double duty in keeping chips out of the
split nut.. This saved wear and tear of the slip nut and lead screw?threads
which were only used for threading. The split nut was engaged with a lever, the
power feed was engaged by tightening a knob on the apron to engage the clutch.
The South Bend also had power feed on the cross slide.
?
The
Atlas was a little lighter than the South Bend but still a very good machine. It
used the lead screw for both threading and power feeds. (Someone can correct me
if I am wrong on the lead screw.) Atlas made lathes for Sears under the
Craftsman name, so if you run across a Craftsman lathe it is most likely an
Atlas.
?
Once
Sears started selling lots of these Atlas/Craftsman lathes, Montgomery Wards
wanted in, so they contracted with Logan Engineering to built them a lathe to
compete with Sears with. The first Logan lathes were sold through Montgomery
Wards under their Power Kraft label. A year later Logan started manufacturing
lathes under their own name and the Logan Lathe was born.
?
The
South Bend lathes started out in 1906. Later they moved into the old Studebaker
auto plant which had closed its doors in South Bend Indiana.?Through buy
outs and mergers?with LeBlonde and others, they?ended up going through
several companies and I believe ended up as part of Grizzly Industrial
Inc.
?
The
Logan/Wards were built in Chicago, Illinois from 1940 -
1971.
?
The
Atlas lathes were built in?Kalamazoo, Michigan?from 1936 -
1980???
?
If you
buy one of these larger work horses expect to do some rebuilding on them. They
have probably have lots of years of use on them but with a little rebuilding
they will be running long after you are gone.
?
Michael
?
?
|
Re: Buying a mini-lathe
开云体育?I wouldn't advise being too quick to just dismiss being able to cut left hand threads, or to power feed away from the chuck, or bore out a workpiece where you'd have the chuck going in reverse and the tool feeding into the far side of the hole where you can see it, etc. - In short, being able to reverse the direction of the leadscrew (independently of the spindle direction) is not necessarily some minor little detail to carelessly toss away, so to speak.?A little bit of reading background might be in order: ?Here, the guys at Fignoggle did a . ?And perhaps most importantly, here shows some 8x12/14 owners discussing their not insignificant efforts to , so they can do all that reversible leadscrew stuff mentioned above. Pictures included. Clearly, at least some percentage of 8x12/14 owners do not find a reversible leadscrew to be an unnecessary "frill." ?If that 7x, 8x, 9x or whatever size lathe is going to be the only lathe you own, I highly recommend doing your homework on this stuff for yourself. For example, a number of the members here own more than one lathe. That can definitely color perceptions. An "only lathe" is not at all the same as a small manual lathe that is an addition to go along with other bigger lathe(s) and CNC machines and such. An "only lathe" has do do everything lathe related that you might ever run across, with no hopping about to other machines you do not have. :-) ?More info & understanding is always better: The 7x already has the variable speed and tumbler gears and whatnot, but it is a small light duty machine, incapable of taking deeper cuts like the bigger machines can do, so some operations can take a fair bit longer to get done. Then again, I remember seeing a video from somebody right here on on this list taking 1/4" deep cuts into steel with a carefully prepared HSS turning tool in a well tuned 7x. Hopefully somebody here will remember that video and re-post a link - it just shows what is possible with these things, just as those 8x photos linked to above do - in that case of course adding tumbler gears in order to have a reversible leadscrew. ?Taking the 8x12/14 and adding a variable speed control and lever operated tumbler gears for a reversible leadscrew would make for quite a machine! Until, that is, somebody else notes how nice it would be to have a quick change gearbox so you can just shift a few levers around to select a desired feed rate or thread pitch, and, of course, a powered cross slide. :-) ?I personally can live with the more "primitive" method of manually swapping change gears around as needed for threading operations and such, but not having a reversible leadscrew is just going a bit too "primitive" for me, heavier mass lathe bed and deeper cut capability right out of the box or no. But thats just me with my one (1) 7x12 mini-lathe and my one (1) X2 mini-mill with which I have to do everything. ?I should note again, though, how so many members and group owners/moderators on these various metalworking lists, seem to eventually end up getting 12x or larger lathes and much bigger mills and such. Running into jobs too big to fit little benchtop machines can be really bothersome and may lead to major purchases for some folks. This "hobby" can sure be heck on the wallet. :-) ?In any case, best of luck! ?John Z. On 10/16/2011 11:08 AM, nissan.370z wrote: ? |