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Re: correction on DRO/Lindsay
Russ Kepler
Bill, the URL on your posting on how to build your own DRO is a sex site.^^^^^^^^^-angelfire This is a common misspelling, and some sex site took advantage of it and registered the misspelled url. -- Russ Kepler russ@... Please Don't Feed the Engineers |
Re: Digest Number 1 & homebrew DRO
Well I got the digest #1 last night (the second digest, since there was
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a digest #0). Since my introduction was labeled message #1, anyone who signed up after it was posted didn't see it (unless they signed up for digested as well), so I included it below. As I noted below, I'm in the process of doing my own DRO. Resolution of the encoders is probably biggest $ consideration. In other words, the more resolution you want the more $ you need. US Digital can provide linear encoders that will provide resolution of .0006". These cost around $50 bucks each, depending on length, shorter = cheaper. The are also manufacturers that have linears with .0001" resolution, they'll cost around $500 for an 18" version. I got the US Digital PC interface card. It has 4 channels, so, while I'm only using 2, one for X and one for Y, I can expand to a Z axis if necessary. At this point I don't know what I'd do with a 4th dimension, speed I suppose. The actual display was cheap, that old PC that been gathering dust since the last upgrade was free! I wrote the software, so I can make it do what ever I want. Currently, it displays X and Y travel as well as feed rate. It can do presets, zeros...the usual stuff. Message: 1 |
Re: Digest Number 1
Andrew Werby
In a message dated 5/5/99 6:55:18 PM Pacific Daylight Time,
cbrumbelow@... writes: I do not recall seeing them there, and they were not listed in the venders list in the guidebook. Bill alb. NM [Um, could someone start from the beginning and tell us what NAMES is or was? Was that a machine show? I happen to be a discount online distributor for MAXNC, and unlike them I do respond to e-mail, so if you have a question, or wish to order something they make, let me know. I can get you any of their products, including their new larger MAXNC-15 mill, for 5% off their list prices. Since this is my first posting to this list, perhaps I should introduce myself. My name is Andrew Werby, and I'm a sculptor who has become fascinated by the possibilities opening up due to the CAD revolution. Suddenly things that only people working for Fortune 500 companies could do 5 years ago are possible, and even affordable, for small businesses, artists, and hobbyists. I've been trying out various solutions for the past few years, and recently decided to start a business based on the tools I'd used that worked well for me, were cost-effective, and which I could manage to sell cheaper than anyone else. So I'm offering several products through my online storefront at : Rhino 3d, a powerful NURBS-based modeler for the Windows platform, which is capable of importing 3d scans, supports inexpensive 3d digitizing arms, is accurate and easy to use, and is also one of the least expensive 3d modeling programs available (especially at my discount price.) Once one makes a model in Rhino, it is exported to another program called DeskProto, which automatically writes a toolpath based on its geometry, which in turn is fed into the MAXNC milling machine, which turns it into an actual part. For people looking for a heavier-duty machine, I've recently added the CNC Junior, a mill-drill converted to work on g-code, to my discount offerings. So far, all I've got is a MAXNC-10 for output myself, but I've got one of the larger and more powerful MAXNC-15 machines on order- it should arrive in a week or so. I've also got an older 1hp Bridgeport mill with a DRO and power feed on one axis, but I've talked myself out of trying to convert it to CNC, (in spite of Jon Elson's encouragement to the contrary. ) While I'm very interested in CAD, CAM, and the various strategies used to produce parts from computer files, my technical knowledge on these subjects is not very deep- I'm hoping to use this list as one way of making up for my deficiencies on that score. If anybody has questions about any of the products I represent online, if I don't know the answer myself I will make every effort to find it out.] Andrew Werby Andrew Werby - United Artworks Sculpture, Jewelry, and Other Art Stuff |
Re: Digest Number 1 & homebrew DRO
In a message dated 5/7/99 4:49:00 AM Pacific Daylight Time,
rmcilvaine@... writes: I got the US Digital PC interface card. It has 4 channels, so, while I'm A common usage for the fourth channel would be for a rotary table, or something along that nature, Bill |
Intro
Jon Elson
Hello, all,
I have had a home shop for about 17 years, now. A friend of mine and I bought a 1941 round-ram Bridgeport mill from a LARGE home shop business that closed. We went after the auction or sale was officially over, but there was still a lot of stuff. There was this little farm house on a hill, and about 50 derelict semi-trailers parked out back. Each trailer had about 3 machines in it, some of them looked like the machine shop on a submarine! You can imagine a huge horizontal mill, maybe a surface grinder, and a bandsaw, for instance, in a 20' trailer. There were festoons of 440 V 3-phase wiring running from trailer to trailer. Anyway, one of the leftovers was my Bridgeport. The auction or sale (I don't remember which) was set up by the guy who bought the whole place out, and was getting rid of the machinery he didn't need. He came up with a set of B&S #7 collets for the M head's spindle, which was nice of him. There was an end mill holder frozen into the spindle, and it took us 2 weeks of building bigger and bigger gizmos to get it pulled loose. A year or so later, we got a 10" Atlas babbit-bearing, change gear lathe. The spindle bearings were in awful condition, and fixing that is not so easy. I eventually upgraded to a quick change gearbox and a roller-bearing headstock. Later, I moved up to the 12" Atlas. About 2 years ago, I saw an ad in the newspaper for a Bridgeport J head, and bought it out of a guy's garage. It needed a lot of work, but I have it now on my mill, and it is a big improvement. I bought the axis drives and spindle motors from an Excellon printed circuit board drilling machine when it was being scrapped some years ago, but didn't get around to trying to install in on the mill until last year. I use the EMC program from NIST for CNC control, and I love it! I have one of the hideous $189 4x6" bandsaws, but it is sure a lot better than a hacksaw! I also have a 3' Chicago finger brake, a Roper-Whitney 5-ton punch press, an AC welder and an Oxy/MAPP torch, mostly for brazing use. I also have a setup for making printed circuit boards. I drill them on the NC mill. I made my own laser photoplotter for artwork, with 1000 x 1000 dot/inch resolution. I have an etching machine that they threw out at work. 10 minutes and a couple dabs of epoxy made it as good as new. You might want to look at my web pages, which have some pictures of this gear, at : There's probably more, but that is about all I can think of right now. Jon |
Re: What's up with the list?
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-----Original Message-----Bill, If this is true it is really not working correctly. If I get a digest this evening, then I'll have recieved a copy of each post when it was posted, then a digest post with a copy of each message posted. If this happens I'll let you know. Regards Mac |
Re: Hello
Brian Fairey
Dan, there you are, what is the URL of your web page?
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Brian, Ont, Canada. Dan Mauch wrote: Looks like in time this will be a good site.Dan |
Starting point
Hi all,
I subscribed to the digested list and have not received the first digest. Therefore I don't know what, if anything, has been discussed. Maybe a good starting point would be for those who were at NAMES, to tell those of us who weren't, about the conversation that brought about the creation of this list. Are we going to talk about homebrew EDM/DRO? If so I'm in the process of mounting X & Y .0001" res. encoders to my Bridgeport. These are connected to two channels of a US Digital 4 channel encoder interface card in an old 286 PC. I wrote the software for this card. Are we going to talk about CAD? I've had the dubious honor of spending the better part of the last 25 years in the CAD industry. Are we going to talk CAM? I started my computer career designing CAM machinery for the ancient technology of wire wrapped digital circuit boards. We used small computers back then, they were only 6 ft. high in a 19 inch wide rack cabinet, with the latest storage media available...paper tape readers! So, let the games begin! Mac Homebrewer and tinker by choice, Computer geek by trade. |
Re: What's up with the list?
In a message dated 5/6/99 1:45:49 PM Pacific Daylight Time,
rmcilvaine@... writes: It is my understanding that the digest form goes out at night, keep us posted as there postings going out. bill |
Re: Newbie . . .
In a message dated 5/5/99 6:55:18 PM Pacific Daylight Time,
cbrumbelow@... writes: I do not recall seeing them there, and they were not listed in the venders list in the guidebook. Bill alb. NM |
Re: Hello
In a message dated 5/6/99 11:13:28 AM Pacific Daylight Time,
dmauch@... writes: Dan, I sure hope so, I got tired of being by myself in the hunt for information. Found a lot but is sometimes hard to tie it all together. While at NAMES I attended a meeting on CAD/CAM, and later one on Wire/EDM. It was then that I got the idea to see if I could get names from the people there that would be interested in a list such as this. I felt that the interest was great enough so that I started it. I added the DRO as it fell right in line with the other topics of interest to the list. I am hoping you as well as others will add to the list. To the rest of the Listees, this is Dan of Camtronics, <A href=">Home Page</A> , Dan sells a nice line of drivers for steppers, look and see for yourself. I have just built his 3 axis 5 amp board. Let the good time roll. bill |
Hello Everyone
Hello to all, we are off to a start. We currently have 48 listees. Hope too
have all 48 posting to help the rest of us. A few observations comments might be in order: To reply, hit reply, and go from there. To send new mail, use the list name, I would suggest that you put it in your address book. There were several postings on 5/5/99, if you did not receive them check on ONELIST they are there and can be read there. When the list is signed up in the digest form you will get all of the days postings sometime that night, I have no idea when this will occur. If you have any problems let me know and I will try to straighten them out for you. I feel that all attachments/binary's should be sent directly to those requesting them, rather than the whole list. This seems to be the best way for most people. I will not release anyone's name unless requested to by that person. However note that your name and e-mail shows on the header depending how your system is set up. Now on to the good part. I would hope that people on this list would express there area of interest of the four items covered in the list, whether you are building or buying. Also of interest would be results of your work, sources, companies, URL's links. Almost anything you are doing in the above topics is subject to posting. It would be nice if we could get comments on what we expect from the list, and also what we can offer to the list. I am not restricting to the above inputs only. Give us all what you can. So guys, please get the fingers to walking, looking forward to lots of good stuff. Bill |
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