Home |
Search |
Today's Posts |
|
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. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
Question, any help would be appreciated : )
Hi all, I want pay someone to produce multiple copies of a piece of
metal in a certain shape. This piece of metal will be small (about 1 cm x 1 cm x 1.5 millimeters.) It will have a small slit in it, which is meant to fit snugly over another piece of metal, so the specified dimensions of the metal piece being produced must be reproduced with a very high amount of precision and accuracy. I am pretty new and clueless to the world of metalworking, but I have a background in the physical sciences and math, and am a fast learner. Can anyone suggest a production method for this piece of metal that I'm talking about? Perhaps die casting? If anyone has any introduction to metalworking websites/documents that they think would be helpful, I would greatly appreaciate any suggestions here as well |
#2
|
|||
|
|||
|
#3
|
|||
|
|||
|
#4
|
|||
|
|||
I understand the concept of tolerances, but I'm not sure what tolerance
would result in "no perceptible play," which is what I'm trying to achieve. This metal piece that I'm trying to manufacture is intended to be used to extend the length of a knob on a musical instrument. The metal piece will be moved a lot in the course of the use of the instrument, and will need to remain snugly in place over the metal tab which it fit over, with no perceptible play. There won't be a lot of force in the direction that would pull the tab off, but there will be a small amount. Ideally, I would like to consult with someone who could manufacture the part for me, who could also help me work all of the minutia that need to be worked out to get the part to function as I would like it to. However, if this isn't available or is prohibitively costly, I can learn how to work out the minutia myself. In this case, I would need to either: a) measure the magnitude and direction of the forces that are typically applied to this part of the musical instrument, and use those combined with information about the materials being used to calculate how snug the metal piece will need to be. or b) produce a few prototypes and simply test them to see how well they function. This would be much easier than option (a), but I don't know if it will be exceedingly costly. I don't have anything more precise and accurate than a ruler to measure with, but I know that the metal piece that I'm trying to produce will need to be manufactured with a tolerance for fluctuation from the desired dimensions of less than a millimeter. Any ideas? Thanks very much again -Max |
#5
|
|||
|
|||
I don't have anything more precise and accurate than a ruler to measure
with, but I know that the metal piece that I'm trying to produce will need to be manufactured with a tolerance for fluctuation from the desired dimensions of less than a millimeter. At first, I would like to manufacture as small a number as possible to make sure that they function as I'm hoping they'll function. Once I know that they function as I want them to function, I really only need a small number of them... maybe around 100. If other people find them helpful, I may want to manufacture more later. Also, the number that I would like to manufacture all depends on the cost... if manufacturing 100 costs practically the same as manufacturing 1000, I'll go for manufacturing 100. But if manufacturing 1000 is much more costly than manufacturing 100, I'll have 100 made for now, and make more later if they're needed. As far as material to construct the part out of, I am really needing in guidance... perhaps if I describe the purpose of the part that I'm trying to create it will help. This metal piece that I'm trying to manufacture is intended to be used to extend the length of a knob on a musical instrument. This metal piece will be moved a lot in the course of the use of the instrument, and will need to remain snugly in place over the metal tab which it fit over, with no perceptible play. There won't be a lot of force in the direction that would pull the tab off, but there will be a small amount. Ideally, I would like to consult with someone who could manufacture the part for me, who could also help me work all of the minutia that need to be worked out to get the part to function as I would like it to. However, if this isn't available or is prohibitively costly, I can learn how to work out the minutia myself. In this case, I would need to either: a) measure the magnitude and direction of the forces that are typically applied to this part of the musical instrument, and use those combined with information about the materials being used to calculate how snug the metal piece will need to be. or b) produce a few prototypes and simply test them to see how well they function. This would be much easier than option (a), but I don't know if it will be exceedingly costly. Any ideas? Thanks very much again -Max |
#6
|
|||
|
|||
I forgot to add that since the part will be used in a musical
instrument, it will be moved and banged on a lot (only by the range of forces exerted in the use of the musical instrument) and should not get bent out of shape from these forces. I'm sure that material is the key factor in this, so that is something that I need to factor in as well. |
#7
|
|||
|
|||
In article .com,
wrote: I understand the concept of tolerances, but I'm not sure what tolerance would result in "no perceptible play," which is what I'm trying to achieve. "No perceptible play" needs to also take into account the variation in dimensions of the piece to which it will be fitted. Unless you are able to control the dimensions of the part on all of the instruments to which your part would be applied, yours would need to be adjustable to make up for that. I would consider "no perceptible play" to be in the vicinity of a light interference fit, and without knowledge of and control of the dimensions of the piece to which it fits, I don't think that you can get away without the ability to adjust. It sort of sounds like an extension of something like a flute key, to enable a smaller hand to reach it. And I'm pretty sure that flute keys (even within the same maker) are not that consistent in thickness. [ ... ] I don't have anything more precise and accurate than a ruler to measure with, but I know that the metal piece that I'm trying to produce will need to be manufactured with a tolerance for fluctuation from the desired dimensions of less than a millimeter. Significantly less -- and perhaps as tight as +/- 0.01mm (which is close to 0.0005 inch). You seriously need to improve your measuring instruments. And if you are fitting something like a flute key, you probably can't use the typical micrometer to do it, because the surface curves. Any ideas? Thanks very much again Not while you are being so close mouthed about the details. You might want to start processing on a patent first, if you are so worried about that. Good Luck, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
#8
|
|||
|
|||
|
#9
|
|||
|
|||
I've researched into the applicable patent law, and the metal piece
that I'm trying to manufacture is too obvious to patent. I agree that the relationship that you're describing would be ideal. I would like to find someone like that to work with. In my experience with business however, I've only ever encountered people that want to screw you from every possible angle before you have the chance to know what hit you. I am by nature a person that wants to only engage in non-zero sum exchanges (transactions from which all parties benefit). However, I've learned from experience that if you don't protect yourself, you'll get ripped off in a second, and that even the most seemingly fair and kind person will probably switch personalities at the prospect of profit. At the same time, there are some genuinely honest and fair people out there, but they make up a much smaller percentage of the population than most people would think. In my present situation, the only way to protect myself would be to either: a) work with someone who is legit (if you can recommend anyone, I live in the Chicagoland area. Like I said, I am only interested in engaging in relationships in which everybody benefits, so the person to which I'm referred to would benefit as well) or b) legally pin down the person who I work with such that they can't take the idea, manufacture the part themself and start selling it (not that they would probably know the target market anyway) Of course, option A is much more preferable. However, if option A doesn't pan out, do you know how an unconnected person finds a metalworker that could do what I'm trying to have done? |
#11
|
|||
|
|||
Thanks for the tips Tim. Don Lancaster's arguments are pretty
consistent with the impression of the patent industry that I've acquired through my research into it. Dang ya know, one time someone was asking me to sign an NDA and I saved it on my computer in the event that I might find use for it as a boilerplate NDA for my own possible use in the future. Unfortunately, my old computer crashed and I lost all of the data on it, including the NDA. Any chance someone has an NDA that I could alter and use as a boilerplate? If so, you could discreetly contact me by email at , and I could be indebted in your service. |
#12
|
|||
|
|||
|
#13
|
|||
|
|||
|
#14
|
|||
|
|||
|
#15
|
|||
|
|||
On 11 Mar 2005 14:49:26 -0800, wrote:
that email address should read: Here is one, but it'll cost you $14.95: http://www.nightcats.com/sales/nda.html |
#16
|
|||
|
|||
I was looking at ways of starting small enterprises years ago, and kept
seeing suggestions to contact a local chapter Senior Corps of Retired Executives (SCORE), for helpful information/guidance in establishing new startups, grants, SBA approval, etc. A local Chamber of Commerce or (enginneering/manufacturing) development association might be able to suggest some contacts for design help. The trouble I see with wanting to make a small metal part that could be a great convenience in using this musical instrument, would be that a China manufacturer could possibly flood the global market with only one week's production of such a part. It sounds as though the part could probably be prototyped with epoxy putty. That would allow testing and improvements to be done without any serious machining. The putty can be cast on a piece of scrap material that has the same dimensions as the instrument's part, and filed/sanded to an appropriate size and shape, then painted (to conceal that it's just a lump of putty). The putty model would give the inventor a 3-D part that can be measured, and dimensions that can be transferred to metal. Fabrication costs could be derived from the dimensions. Follow the appropriate steps in copyright protection (witnessed, dated, detailed drawings as the product evolves, etc) in case you decide to pursue that later. WB ............. "Don Foreman" wrote in message ... On 11 Mar 2005 11:14:41 -0800, wrote: I've researched into the applicable patent law, and the metal piece that I'm trying to manufacture is too obvious to patent. I agree that the relationship that you're describing would be ideal. I would like to find someone like that to work with. In my experience with business however, I've only ever encountered people that want to screw you from every possible angle before you have the chance to know what hit you. I am by nature a person that wants to only engage in non-zero sum exchanges (transactions from which all parties benefit). However, I've learned from experience that if you don't protect yourself, you'll get ripped off in a second, and that even the most seemingly fair and kind person will probably switch personalities at the prospect of profit. At the same time, there are some genuinely honest and fair people out there, but they make up a much smaller percentage of the population than most people would think. In my present situation, the only way to protect myself would be to either: a) work with someone who is legit (if you can recommend anyone, I live in the Chicagoland area. Like I said, I am only interested in engaging in relationships in which everybody benefits, so the person to which I'm referred to would benefit as well) or b) legally pin down the person who I work with such that they can't take the idea, manufacture the part themself and start selling it (not that they would probably know the target market anyway) Of course, option A is much more preferable. However, if option A doesn't pan out, do you know how an unconnected person finds a metalworker that could do what I'm trying to have done? Too bad you're not near Minneapolis! You might see if there are retiree organizations of companies in your area that would have employed the type of person you seek. In Minneapols, for example, you could very likely find some guys thru the Honeywell retiree organization. These orgs are set up for pro bono volunteer work, but nobody spends all of their time doing that. I probably spend half my time doing stuff like you describe, though mostly in the area of designing electronic gadgets -- and even building them now and then. I can tell you that the minute you pulled legal papers out of your briefcase, I'd be gone in a heartbeat. You might be better off asking about other such work a person might have done and checking references. I'd have no problem with that. There are a number of readers of this group that I think would vouch for me. There must be guys in Chicagoland like that too; it's just a matter of finding them. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#17
|
|||
|
|||
On Sat, 12 Mar 2005 13:28:35 -0500, "Wild Bill"
wrote: I was looking at ways of starting small enterprises years ago, and kept seeing suggestions to contact a local chapter Senior Corps of Retired Executives (SCORE), for helpful information/guidance in establishing new startups, grants, SBA approval, etc. A local Chamber of Commerce or (enginneering/manufacturing) development association might be able to suggest some contacts for design help. The trouble I see with wanting to make a small metal part that could be a great convenience in using this musical instrument, would be that a China manufacturer could possibly flood the global market with only one week's production of such a part. It sounds as though the part could probably be prototyped with epoxy putty. That would allow testing and improvements to be done without any serious machining. The putty can be cast on a piece of scrap material that has the same dimensions as the instrument's part, and filed/sanded to an appropriate size and shape, then painted (to conceal that it's just a lump of putty). The putty model would give the inventor a 3-D part that can be measured, and dimensions that can be transferred to metal. Fabrication costs could be derived from the dimensions. Follow the appropriate steps in copyright protection (witnessed, dated, detailed drawings as the product evolves, etc) in case you decide to pursue that later. Unfortunately, many retired executives only know how the large company they retired from did things with plenty of money to invest and many minions to do the work. The retired executives I know are utterly clueless about how to approach a niche market. Large corporations don't pursue niche markets. Chinese mfrs are used by US marketing and distribution businesses to sell products here. The competition for mass market products isn't offshore factories, but domestic importers who use offshore factories. Niche markets, like musical instruments, may be a different story. Wal-Mart doesn't sell musical instruments. I have a daughter who works in the music production biz. I see about no Asian imports in the catalogs that purvey to that trade. It takes a pretty good craftsman to file something to a precision fit. An even finer fit and feel can be achieved with lapping, probably well beyond what's necessary here. Some gunsmiths have this skill. I'd strongly prefer brass to putty; it files easily enough, can take a fine finish and it can be nickel-plated for appearance -- and nickel has pretty good lubricity and wear resistance as well. A nice fit with silky-smooth feel would be clear evidence that it's not a likely candidate for a Chinese factory -- at least not yet. Max, I think your steps might be as follows: First, make or have made a good working prototype, perhaps with the help of a trusted collaborator. Second, hit the road with the prototype to get customer feedback. Redesign based on feedback. Develop a specification, perhaps with help of a trusted collaborator, that a machineshop or other manufactury can produce to spec in the volume you anticipate. You don't need to tell them what it is or what it's for at that point, and reputable businesses won't care because they know they don't grow by screwing their customers. They make parts to print. Up to you to make the specification and print so that parts meeting spec will do what you want. This is a very important point. If you closely hold control than you must own the result if what you get meets your spec but not your intent. Ya can't have it both ways. If you can't find a trusted collaborator: buy a set of warding files, a jeweller's fretsaw, some brass and gae thee from the keyboard to the shop. Then make your specification and print and go shopping. |
#18
|
|||
|
|||
In article , Don Foreman says...
Niche markets, like musical instruments, may be a different story. Wal-Mart doesn't sell musical instruments. Oddly, ours does. They sell guitars. I wonder if they're going to branch out in this area. Jim -- ================================================== please reply to: JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com ================================================== |
#19
|
|||
|
|||
On 13 Mar 2005 08:41:43 -0800, jim rozen
wrote: In article , Don Foreman says... Niche markets, like musical instruments, may be a different story. Wal-Mart doesn't sell musical instruments. Oddly, ours does. They sell guitars. I wonder if they're going to branch out in this area. See any Gibson or Gretsch guiltars there? They sell tools, too! |
#20
|
|||
|
|||
I totally agree that I would do much better working with a different
bunch of people than I've previously dealt with : ) Perhaps I will get a new outlook on business dealings as I continue to work with different people. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Yet another tub caulking question (sorry!) -this time about color | Home Repair | |||
new foundation question | Home Repair | |||
Simple question regarding Ceiling tiles and sound? | Home Repair | |||
Simple question regarding Ceiling tiles and sound? | Home Ownership | |||
Plumbing Question | UK diy |