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Re: Basic problem? & a new question
walsh2002bc
--- In 7x12minilathe@y..., "Capt Ken Appleby" <captkenn@m...> wrote:
Hi Mike,Yup...2mm is a little tough to work around. It reminds me though Capt. Ken that recently I saw an article on an extremely simple EDM that was just a vertical slide that lowered an electrode into a bowl of water. The power was from the mains with two light bulbs on each phase. The examples showed nice clean small cuts using wire rod with brazed shapes as electrodes. I've surfed by other edm projects on the net. If you'd like I'll try to look it up and scan it....It was in Home Shop Machinist some months ago I think. I have to confess Ken, I don't have a 7 x 12 but I've had a 7 x 10 for years. Although I'm in Canada I ordered the repair kit from Little Machine Shop and was more than pleased. It has replacements for all the driving gears, new driver transistors and belts and cross slide nut. The price is so low it may be worthwhile ordering from them and paying the shipping. I'm not aware of any similar supplier on your side. My preferance on the nut would be to buy a 10 x 1 mm LH tap and make my own but then I've never had the trouble. Give me email off line if you need the scans. Mike |
Re: Basic problem? & a new question
Brice D. Hornback
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----- Original Message -----
From: "Jerry Smith" <jfsmith@...> To: <7x12minilathe@...> Sent: Tuesday, November 26, 2002 6:28 PM Subject: Re: [7x12minilathe] Re: Basic problem? & a new question Hi,Google can't find the URL. |
Re: Basic problem? & a new question
fromday2
--- In 7x12minilathe@y..., "Capt Ken Appleby" <captkenn@m...> wrote:
Unfortunately, in the UK, Alum is no longer readily obtainable "at the local pharmacist.You might try a taxidermist shop or a garden shop, it has uses in both activities. I do not know from personal knowledge if potassium alum or aluminum sulfate give identical results. Seems to me that both are called alum. If it will save your castings it might be worth the time to do some web searching. Al Day |
Re: Basic problem? & a new question
Paul W. Chamberlain
Here it is:
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Paul, Central OR Jerry Smith wrote: Hi, |
Re: 7x12 questions, I am new
Sean, You can find a lot of info that may answer your
questions here: Frank Hoose --- Smurf707 <smurf707@...> wrote: Hello I am an 18 yeard old machinist, I have about __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. |
Re: Turning Brass and Aluminum on a 7x14
Paul W. Chamberlain
I use brass strips from the local hobby shop. They come in 12" length, different thickness and widths. I cut them to size and form them around the jaws like a second skin. That way I don't need four hands to tighten the material in the chuck.
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If you heat the brass with a propane torch until red then quench it in water, it will anneal (soften) it and it is real easy to form. Paul, Central OR Smurf707 wrote: Cardbaord I have used, although that may not have a whole lot of precision when u do that so pop cans or some thing along those lines sounds like the best best. |
Re: 7x12 questions, I am new
Paul W. Chamberlain
There was quite a discussion on another group awhile back. The economy minded supported the Homier 7x12. The members that had purchased the Micro-Mark 7x14 were very pleased with that lathe. It is over twice the price of the Homier at $629, so the buyer needs to determine what they want, and just how much extra features are worth. I paid $895 for a 7x14 made in Taiwan a couple of years ago. Same basic design as the Micro-Mark but better built yet than the Chinese units. If there were an American made version, it would be priced in four figures.
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The Homier and Micro-Mark lathes both come out of the same factory. The Micro-Mark has a longer bed, larger motor, spindle tach, "true inch" cross slide and compound leadscrews and a cam lock tailstock. The individuals that already had a Homier or Grizzly 7x12 or a Harbor Freight 7x10 reported that they felt the Micro-Mark was better finished, out of the box. Micro-Mark carries several accessories for 7x series lathes, For Homier, you currently have to get the accessories from one of the other vendors. Both Homier and Micro-Mark have had good reports for after sale support, especially in cases where there was damage in shipment. Homier has both online ordering with a shipping charge and traveling tool shows with no shipping charge. The traveling shows seem to have only a couple lathes at each show, and it's first come, first served. Micro-Mark has a 10% off sale every few months ( I wait for those when there is something I want from them). Do a "Smart Search" for 03911 For spare parts or after warranty repair parts, LittleMachineShop has them, along with many accessories. Paul, Central OR Smurf707 wrote: Hello I am an 18 yeard old machinist, I have about 3.5 years as a machinist/machinist in training. I am currently attending college for Precision Machnining Technology. I am used to big old lathes and mills, but I absolutely love machining and they are to big and bulky for my space, I have chosen on the smaller version, possible the Homier 7x12 because its $299 But what is this I hear about the 7x14 micro mark, how much is it, which would be a better buy? Thanks |
Re: 7x12 questions, I am new
Smurf707
Yeh I have been checking out that www.mini-lathe.com page , very
imformative. I am on a budget so I probably will stick with the homier, they have exact sma eones on ebay with only $50 for shipping! I will have to check that out, Well thanks for your input guys, and more is appriciated. Sean --- In 7x12minilathe@y..., "Paul W. Chamberlain" <pwc@c...> wrote: There was quite a discussion on another group awhile back. Theeconomy minded supported the Homier 7x12. The members that had purchasedthe Micro-Mark 7x14 were very pleased with that lathe. It is over twicethe price of the Homier at $629, so the buyer needs to determine whatthey want, and just how much extra features are worth. I paid $895 for a7x14 made in Taiwan a couple of years ago. Same basic design as thewere an American made version, it would be priced in four figures.The Micro-Mark has a longer bed, larger motor, spindle tach, "trueinch" cross slide and compound leadscrews and a cam lock tailstock. Thefinished, out of the box. Micro-Mark carries several accessories for 7xseries lathes, For Homier, you currently have to get the accessories fromone of the other vendors.support, especially in cases where there was damage in shipment. Homier hasboth online ordering with a shipping charge and traveling tool showswith no shipping charge. The traveling shows seem to have only a couplelathes at each show, and it's first come, first served. Micro-Mark has a10% off sale every few months ( I wait for those when there issomething I want from them).has them, along with many accessories. |
Lathe Accuracy
Good Morning:
Finally received the new HS assembly from Homier, and carefully swapped out the internals from the original. After installing the "new" hs, and squaring it to the bed, I reinstalled the chuck, and proceeded to chuck up a 1/2" 12L14 shaft to test the assembly. Checking the hs/ts height, showed them to be in good alignment. Took a .010" pass off the rod without holding the end in the ts, and even taking a short cut 2" from the hs produced a taper. Am wondering if the bed is twisted, or if I should just scrap this unit for a new one. If anyone else has run across this situation, I would be interested in hearing your thoughts/comments on correcting this problem. Best regards, Nick |
Re: Lathe Accuracy
Nick,
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which way is it tapered, small end to the headstock or tailstock? If your lathe is bolted down that can twist the bed and swpping parts will not help. Try loosening the bolts holding down the tailstock end and take another cut. If it changes the bed was twisted by the bolts. Then you shim it so when it is tightened down the cuts are true without a taper. Bob On 27 Nov 2002, at 15:23, ntdefeo wrote:
Good Morning: |
Re: Indexable Inserts
Jim E.
It's all about the center hole: "T" means it's countersunk, "M" means
it's not. Graciously, Jim Lakewood, CA All Hail Rube Goldberg! Smurf707 wrote: --From what I know, they are the same. Both are interchangeable witheach other pretty much, maybe 1 has a different coating? |
Re: Lathe Accuracy
Good Afternoon, Bob:
The taper is smaller toward the headstock. The lathe is not bolted down, but is sitting on a 1 1/2" workbench that is level. Am wondering if bolting the bed down will correct this tapering situation. I have cut several 1/2" steel rods; with the tailstock locked down, and unlocked, with the same results. I am considering trying to test the alignment of the head/tail assemblies using centers and a DTI. I certainly appreciate your time, and will advise of my findings shortly. Best regards, Nick Bob Sunley <rosunley@...> wrote:Nick, which way is it tapered, small end to the headstock or tailstock? If your lathe is bolted down that can twist the bed and swpping parts will not help. Try loosening the bolts holding down the tailstock end and take another cut. If it changes the bed was twisted by the bolts. Then you shim it so when it is tightened down the cuts are true without a taper. Bob On 27 Nov 2002, at 15:23, ntdefeo wrote: Good Morning: Yahoo! Groups SponsorADVERTISEMENT To unsubscribe from this group, send an email to: 7x12minilathe-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. --------------------------------- Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now |
Re: Lathe Accuracy
Good Afternoon, Bob:
The taper is smaller toward the headstock. The lathe is not bolted down, but is sitting on a 1 1/2" workbench that is level. Am wondering if bolting the bed down will correct this tapering situation. I have cut several 1/2" steel rods; with the tailstock locked down, and unlocked, with the same results. I am considering trying to test the alignment of the head/tail assemblies using centers and a DTI. I certainly appreciate your time, and will advise of my findings shortly. Best regards, Nick Bob Sunley <rosunley@...> wrote:Nick, which way is it tapered, small end to the headstock or tailstock? If your lathe is bolted down that can twist the bed and swpping parts will not help. Try loosening the bolts holding down the tailstock end and take another cut. If it changes the bed was twisted by the bolts. Then you shim it so when it is tightened down the cuts are true without a taper. Bob On 27 Nov 2002, at 15:23, ntdefeo wrote: Good Morning: Yahoo! Groups SponsorADVERTISEMENT To unsubscribe from this group, send an email to: 7x12minilathe-unsubscribe@... Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. --------------------------------- Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now |
took the Plunge...
Smurf707
Well tonight I order one fo the homier type Lathes (7x12) off of Ebay
for $299 since I am to poor to afford anything better, I barely scrounged up enough. lol its my only christmas present and I had to pay half. Oh well, hope I made the right choice... I alreayd have some toolbits and measuring equiptment that I use currently so the bugg has Officially bit me.... did I make the right choice? BTW, during my senior year in on of my machining classes my teacher and a few other advanced students began building a tom thumb type engine, it didn't really have a name. Some guy designed it, we modified it to make it better but it has yet to be finished due to time contraints, although most everything important is done, gas tank, carb, and small stuff is all that is left. We also cut out own gears which was a learning experience. Well sorry I wrote so much :) I will get pics up when its finished, who knows how long... |
Re: took the Plunge...
Paul W. Chamberlain
Let's put it this way... you did not make a "bad" choice. All of the 7x series lathes are capable of the same work. Some just have more included features, but most of those can be added later if needed.
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Even if you decide later that you did not make the "right" choice. You'll have learned enough about these smaller lathes to know what to look for later. Many owners add lathes to their shop, I'm one. It allows leaving complex setups on one while having the other(s) for one-up projects. Also, if you ever get into toolpost grinding, you can do that on the most expendable lathe. The abrasive residue is not kind to a lathe's mating surfaces. Paul, Central OR Smurf707 wrote: Well tonight I order one fo the homier type Lathes (7x12) off of Ebay for $299 since I am to poor to afford anything better, I barely scrounged up enough. lol its my only christmas present and I had to pay half. Oh well, hope I made the right choice... I alreayd have some toolbits and measuring equiptment that I use currently so the bugg has Officially bit me.... did I make the right choice? |
Re: took the Plunge...
Smurf707
I chose this one manly for price, but I have some thigns in mind. I
been reading alot of the pages that people make and am amazed at the stuff they design and build!! I actaully was planning on doing some toolpost grinding after I make a proper holder... I figured I might use my dremel with the flexible tool attachment, what other things cna I sue for a grinder? Sean --- In 7x12minilathe@y..., "Paul W. Chamberlain" <pwc@c...> wrote: Let's put it this way... you did not make a "bad" choice. All ofthe 7x series lathes are capable of the same work. Some just have moreincluded features, but most of those can be added later if needed.to look for later. Many owners add lathes to their shop, I'm one. Itallows leaving complex setups on one while having the other(s) for one-upprojects. the most expendable lathe. The abrasive residue is not kind to alathe's mating surfaces.Ebay tofor $299 since I am to poor to afford anything better, I barely pay half. Oh well, hope I made the right choice... I alreayd have |
Re: took the Plunge...
Jerry Smith
Sean,
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I come from a different background, I am a knifemaker and a blacksmith. I use a 2 x 72 belt grinder, which is common in the knife trade. Which I built both of the ones I have. I just got my little lathe and done some neat things with it, but what I did was a refinement of things I have done in the past. I also own a mill/drill and have made jewelry, remade tools, found out what not to do with some bits. I have to order some of the accessory items for my little lathe, because some of the things I want to do, needs another chuck or a third hand type device. Oh, and congratulations on taking the plunge, it took me a while also. Jerry At 05:16 AM 11/28/2002 +0000, you wrote:
I chose this one manly for price, but I have some thigns in mind. I |
Re: took the Plunge...
Smurf707
Thanks for replying Jerry, yeh knifemaking always intrested me,
though it was cool same with blacksmith. Do you jsut make knifes for yourself or do you custom make them and people order or ask which ones they would like made? Sean --- In 7x12minilathe@y..., Jerry Smith <jfsmith@a...> wrote: Sean,a blacksmith. I use a 2 x 72 belt grinder, which is common in theknife trade. Which I built both of the ones I have. I just got my littlelathe and done some neat things with it, but what I did was a refinementof things I have done in the past. I also own a mill/drill and havemade jewelry, remade tools, found out what not to do with some bits.lathe, because some of the things I want to do, needs another chuck or athird hand type device.while also. I thebeen reading alot of the pages that people make and am amazed at somestuff they design and build!! I actaully was planning on doing mighttoolpost grinding after I make a proper holder... I figured I use my dremel with the flexible tool attachment, what other things |
Re: took the Plunge...
Jerry Smith
Sean,
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I am not going to say that anybody famous has one of my knives, but a few firefighters do carry them as crash knives. I spend 50 to 70 percent of my time making knives. The rest is for other things.. If you want a knife, I can make it, if want order one I can make, if you want to trade stuff for one, I can do that, if you want to trade for the right materials I can do that. I have several prefinished blades looking for handles around. Now if you want to learn how to make a knife, I can let you know the name of several good books. Jerry At 10:53 AM 11/28/2002 +0000, you wrote:
Thanks for replying Jerry, yeh knifemaking always intrested me, |
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