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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Hi,
I am inexperienced at metalworking and would like to get into it. I have brought myself a basic book ("Model Engineering : A Foundations course" by Peter Wright) and would like to purchase a basic lathe, Mill , drill setup to practice and have fun building model R/C aircraft piston/jet engines. I would be greatful if you could post your experience or knowledge about Harbor Freight's mini lathe-mill-drill combo (item # 39743-1VGA) . I have read a couple of online cautions about combo's mentioning them to be inferior in quality . I am looking for an inexpensive (around 400$) set up that is portable by one man and is sturdy. As I understand the minimal lathe dimensions for my (aeromodeling) purpose are 200mm distance between centers and 120mm "height over center" . I think "height over centers" means swing over bed (I am quoting Thomas Kamps book on Model jet engines here.) Do correct me if I am wrong. Do you have knowledge of other alternative hobbist machines that meet these requirements (like say those of Grizzly) . Would you please recommend any . Shereline seems to fit the requirements too but are a bit pricy and I wonder if they are worth it for a newbie. sincerely B Thomas |
#2
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Well, you get what you pay for in most cases, and in most cases HF
stuff just sucks, worse than most other import tools do. That said, just because its HF does not mean that it can't be improved on and many quality parts and projects made form the machine. There is a lot to be desired, but for the most part its still better any day of the month than using a file and a hand drill. I am not going out on the limb and say a Grizzley is better, as there are those that will say its not, that a JET is better, and then those that say only single type tools are best etc etc. Ibought a JET lathe new, and it was a piece of trash, and took close to a year until I got all the bugs and problems with it worked out, and now its a decent machine, so if I new this upfront, I would have saved a bunch of money if I bought a cheaper HF or Grizzley, and spent the sdame amount of time working the problems out of it. There are those that say if you can't buy first class then they won't buy anything, well, let them do without, for the most part, for some to save to get top quality, the time will never come when you have enought saved up to buy or you will be too old to really appreciate your investment. Get what you can afford, learn to live within its limits, and have fun. There is probably more stuff made with el cheapo HF and Grizzley brands of tools than other brands. Look at these machines as a semi finished tool, and you can always improve on it as you gain experience. Biggest drawback of combo machines is setup. You get a part setup in say the lathe, and then its in the way because you need to use the drill press etc.. Nothing beats single use tools, but for some thats not a possibility, and a 3-1 works for them. They sell a lot of em, and I am sure they are not just gathering dust in a corner. Personally I would go with the mini lathe, and a small mill drill over a combo machine, and perhaps add a 8" bench top drill press. Not particularly a fan of HF or Grizzley, but they have their niche in the hobby machine tools catagory. Have fun Roy On Wed, 10 Sep 2003 20:53:57 GMT, B Thomas wrote: x-Hi, x-I am inexperienced at metalworking and would like to get into it. I have x-brought myself a basic book ("Model Engineering : A Foundations course" x-by Peter Wright) and would like to purchase a basic lathe, Mill , drill x-setup to practice and have fun building model R/C aircraft piston/jet x-engines. x- x-I would be greatful if you could post your experience or knowledge about x-Harbor Freight's mini lathe-mill-drill combo (item # 39743-1VGA) . I x-have read a couple of online cautions about combo's mentioning them to x-be inferior in quality . I am looking for an inexpensive (around 400$) x-set up that is portable by one man and is sturdy. As I understand x-the minimal lathe dimensions for my (aeromodeling) purpose are 200mm distance x-between centers and 120mm "height over center" . I think "height over x-centers" means swing over bed (I am quoting Thomas Kamps book on Model x-jet engines here.) Do correct me if I am wrong. x- x- x-Do you have knowledge of other alternative hobbist machines that meet x-these requirements (like say those of Grizzly) . Would you please x-recommend any . Shereline seems to fit the requirements too but are x-a bit pricy and I wonder if they are worth it for a newbie. x- x-sincerely x-B Thomas -- Visit my website: http://www.frugalmachinist.com Contents: foundry and general metal working and lots of related projects. Regards Roy aka Chipmaker // Foxeye Opinions are strictly those of my wife....I have had no input whatsoever. Remove capital A from chipmAkr for correct email address |
#3
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This has been beat to death a thousand times. Just my opinion here.
If you can find used amercan iron, you're way better off. Takes time and scrounging. If you're ANYWHERE near California (like New Jersey) - get ahold of a fellow named Gunner on this NG. Karl |
#4
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![]() B Thomas wrote: I am inexperienced at metalworking and would like to get into it (clip) ^^^^^^^^^^^^^ Your letter makes it clear that you really are starting out from scratch, both in shop setup and experience. A number of others have suggested that it is possible, with a lot of effort, to upgrade cheap machine tools to make them perform well. I am sure this is true, but it seems to me that by opting for cheap tools while you are just learning, you are making it more difficult for yourself. A person who already knows a bit about machining can recgonize the shortcomings of a tool, and find ways to make improvements, or to work around them. If you are as "green" (no offense intended) as you say you are, the junky tools will just make it harder to do good work, and you will not be able to sort out the causes. Second, you are setting a pretty high goal for a beginner. Building model engines from scratch requires a high degree of precision. Third, I do not know whether you recognize that the investment in the basic power tools is not the end of your costs. In fact, it is just a beginning. Add the drawers full of chucks, micrometers, cutting tools, reamers, drills, on and on--you could easily double your investment. I suggest that you take a few classes at night before you spend a dime. Then you'll have a better idea of what you will need, and what it will take to satisfy you. |
#5
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On Wed, 10 Sep 2003 16:17:52 -0500, "Bob Paulin" wrote:
In my case, I looked seriously at a 3-in-1 machine before I fell into two deals which resulted in my purchasing an Enco benchtop mill/drill, and an Atlas 10" lathe. Leigh , has a combo that is a killer deal. He posted it a couple weeks ago. I looked at the lathe today, its a hell of a deal folks. Far far and away will beat the **** out of any mill/drill gizmotchy. Maybe he will post it again. Gunner -- The problem with defending the purity of the English language is that English is about as pure as a cribhouse whore. We don't just borrow words; on occasion, English has pursued other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary. --James D. Nicoll |
#6
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Hello, B. Thomas :-)
The modern formula for a model airplane piston engine is an aluminum piston, and a chrome plated brass cylinder. The crankcase can be made from aluminum too. None of these would be a problem for the Mini Multipurpose Machine. The crank shaft, though, will need to be made out of steel, and here is where you would run into a problem. Unfortunately, the Mini Multipurpose Machine is simply not robust enough to be able to turn steel. However, the Minilathe which Harbor Freight sells, and which weighs three times as much as the Mini Multipurpose Machine, is capable of turning steel. Also, keep in mind that the Harbor Freight Minilathe is twice as big as the Sherline, and again weighs three times as much. You will also be able to drill and mill on the Minilathe, although you probably will want to get an independent Mill Drill eventually. You can make a complete piston engine, though, without the need of an independent mill or drill. And, to top it off, the Minilathe costs less than the Mini Multipurpose Machine. Michael Hi, I am inexperienced at metalworking and would like to get into it. I have brought myself a basic book ("Model Engineering : A Foundations course" by Peter Wright) and would like to purchase a basic lathe, Mill , drill setup to practice and have fun building model R/C aircraft piston/jet engines. I would be greatful if you could post your experience or knowledge about Harbor Freight's mini lathe-mill-drill combo (item # 39743-1VGA) . I have read a couple of online cautions about combo's mentioning them to be inferior in quality . I am looking for an inexpensive (around 400$) set up that is portable by one man and is sturdy. As I understand the minimal lathe dimensions for my (aeromodeling) purpose are 200mm distance between centers and 120mm "height over center" . I think "height over centers" means swing over bed (I am quoting Thomas Kamps book on Model jet engines here.) Do correct me if I am wrong. Do you have knowledge of other alternative hobbist machines that meet these requirements (like say those of Grizzly) . Would you please recommend any . Shereline seems to fit the requirements too but are a bit pricy and I wonder if they are worth it for a newbie. sincerely B Thomas |
#7
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Makes sense. I guess I should wait, save some, increase my budget and
got for the 8"x12" lathe from harbor freight (wt 260lb !). They say it is stress relaxed. I understand that would mean greater precision. I dearly hope it will do me good as I learn. While I do want some thing good , beyond a point I dont want to be payning for brand names and harbor seems good enough. BT On 11 Sep 2003 06:46:52 GMT, MichaelMandavil wrote: Hello, B. Thomas :-) The modern formula for a model airplane piston engine is an aluminum piston, and a chrome plated brass cylinder. The crankcase can be made from aluminum too. None of these would be a problem for the Mini Multipurpose Machine. The crank shaft, though, will need to be made out of steel, and here is where you would run into a problem. Unfortunately, the Mini Multipurpose Machine is simply not robust enough to be able to turn steel. However, the Minilathe which Harbor Freight sells, and which weighs three times as much as the Mini Multipurpose Machine, is capable of turning steel. Also, keep in mind that the Harbor Freight Minilathe is twice as big as the Sherline, and again weighs three times as much. You will also be able to drill and mill on the Minilathe, although you probably will want to get an independent Mill Drill eventually. You can make a complete piston engine, though, without the need of an independent mill or drill. And, to top it off, the Minilathe costs less than the Mini Multipurpose Machine. Michael |
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