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Robots, children's blocks, wooden clocks, its all good! Here's my idea and here's the [[page]] on RepRap's wiki where we can log in and click "edit".
Re: metal laminates fabrication - 18 years ago
Ok - Demented is right to ask the questions he has. BUT one of my questions is. The turbine and generator are on a common shaft that rides on air bearings. There is no metal to metal contact in normal operation. The turbine has to generate 52+ Brake Horsepower to create 40 Kilo Watts of electricity. Where is the over-unity part of this setup. If all you look at is the electrical part of theby bobt - Plastic Extruder Working Group
Re: metal laminates fabrication - 18 years ago
Just as a piece of information about the generator. The paper that has the information on the generatiors has 2 low speed generators of 30,000 rpms. The sizing info is a follows: Unit #3: speed: 30,000rpm Stator Outer Diameter is 152mm Stator length is 370mm Rotor Outer Diameter is 76mm. Rotor length is 370mm Unit #4: speed: 30,000rpm Stator Outer Diameter is 273.6mm Stator length is 165mm Roby bobt - Plastic Extruder Working Group
Re: metal laminates fabrication - 18 years ago
Thanks for the input. I have been reading Hugh Piggot for quite a few years and I like his work. About the speed issue. The turbine that we are using is a non-bladed turbine. Also the turbine and generator/motor are on a single shaft. The generator is about 6" in diameter and about 12" long so I am not so worried about the speed issue. My largest concern about using a cast item is dynamic bby bobt - Plastic Extruder Working Group
Re: metal laminates fabrication - 18 years ago
Andy - THANK YOU. I can use a magnetic material and cast the rotor and stator of my setup. If I build my molds correctly I can cast my fields into place without a problem and increase the field density about 20%. I also can cast the rotor in 2 phases as the first phase creates the 4 lobe rotor and the second phase without the magnetic material to finish the rotor to a cylindrical shape. Whatby bobt - Plastic Extruder Working Group
Re: Live CD - 18 years ago
Oh I know I have my side set up correctly. Because I routinely download and upload fedora linux and such. So just as long as those that what a copy of the disk can get it I am not going to worry about. Thanks for the help.by bobt - RepRap Host
Re: Live CD - 18 years ago
Guys It could be on my end. It also could be which seed is being used. But my meter is setting at 310Kb and has not changed in 24 hours. O well. By the way my download speed is 5Mb and upload speed 1.5Mb so I don't think that it is speed related.by bobt - RepRap Host
Re: metal laminates fabrication - 18 years ago
Andy - I like your idea of mixing magnetic material and resin and casting the shape need BUT I my generator there are no magnets. All of the magnetic energy need is generated by the initial pulse sent to the coil and the initial magnetic field creates the additional energy used to generate the energy. So I do like your idea of milling the dies for punching out the laminations for the generator/by bobt - Plastic Extruder Working Group
Re: Self-fluxing Enameled Wire? - 18 years ago
Quick check on Google for wirewrap sockets let to this. Sockets from $.82 tin to $5.75 for gold. Yes they are not $.14 each as they were in the hay day of wirewrap but they are not that expensive for 1 off designs.by bobt - General
Re: Coil Winding - 18 years ago
Andy - the reason for the J shape feeder tip is so that the wire can be controlled. Where it is placed. What I was going to build is a standard platform that had on the work surface besides the coil form was 2 electric clamps that hold the free end of the wire. Upon starting a coil. The positioning system would place the free end of the wire in a electronically control clamp to hold the end ofby bobt - Plastic Extruder Working Group
Re: metal laminates fabrication - 18 years ago
Ok I understand what you guys are saying but the alternative seem to be this site. I got this information form Zach as he needs to get parts made for rrrf. What I was trying to achieve is the creation of a machine that will cut out shapes to make a switched reluctance motor/generator. It uses electronics to make it work but it is one of the simplest lightest easiest constructed motor/generatby bobt - Plastic Extruder Working Group
Re: Live CD - 18 years ago
Ok - about 12 hours later and I have uploaded 150Kb. Well its a start I guess.by bobt - RepRap Host
Re: Self-fluxing Enameled Wire? - 18 years ago
The automated wrap systems that I remember did not require that any soldering be done. You can still buy the sockets to this day. The wire wrap that was used made contact because the pin/post was square and when the wire wrap was wound around the ping the edge of the square pin cut the insulation on the wire and made contact. It also had an automatic wire cutter built in so that there was NO hby bobt - General
Re: Live CD - 18 years ago
Interesting issue - I have had my bit torrent up with the 0.4 version available and not one (1) byte downloaded. Just thought it was interesting. Bob Teeterby bobt - RepRap Host
Re: Easy to find parts for the CNC Mill (RepStrap) - 18 years ago
My local Ace Hardware as drawers of springs available. See if a hardware store near you carries the specialty bolts and nuts. (ie stainless steel and such ) They then should have them or at the least can order them. Bob Teeterby bobt - Mechanics
Since its winter and we all stay inside - 18 years ago
I live south of the twin cites. And since everyone who lives in Minnesota know enough to stay in out of the cold (ie. Yesterday was 7 degrees F. ) Yes it is that cold. Then now is the time to build a bunch of RepRaps or RepStraps. I for myself am starting a RepStrap so that I can build patterns for Aluminum molding from AutoCad drawings. But enough of the fun. Email if your interested in Reby bobt - Minnesota Twin Cities RepRap User Group
Re: Self-fluxing Enameled Wire? - 18 years ago
Many decades of moons ago I worked for company that made all their computers using wire wrap systems because the volume was so low and each system very customized. But they used a system much like RepRap to build each board. Very fast and very accurate. So recreating history should not be a problem. Especially when we really need to create 1 off versions of a board. (ie. I being 1 of a thousaby bobt - General
Re: metal laminates fabrication - 18 years ago
Viktor - How much power is need to cut 20 - 16 gauge steel thru? Bob Teeterby bobt - Plastic Extruder Working Group
Re: Live CD - 18 years ago
Reese - let me take a look at the emc2 live CD and see what can be done. I guess since I happen to be RHCE that I might be able to help some. I would really like to be able to use a single linux box for both EMC2 and RepRap. I also am interested in making 1 linux box run multiple repraps just because it can. Bob Teeterby bobt - RepRap Host
metal laminates fabrication - 18 years ago
Just mount a drimel tool or Roto zip tool in the Z-axis and use it to cutout the shapes for a laminated generator. Wal-la (not Walmart) assemble the parts into the size needed to make a high speed generator (30,000 rpm). Please note that metal thickness is less than 1/4" so should work... Bob Teeterby bobt - Plastic Extruder Working Group
Coil Winding - 18 years ago
I am going to use my RepStrap to also wind coils for a generator I am making. Attach a coil form to the table base and instead of a extruder head there will be a wire layup head. With a roll of wire supported above the RepStrap the wire will travel down to the layup head which has a friction snubber on it to control the outflow of the wire and an controlled tube that is shaped like a J. The roby bobt - Plastic Extruder Working Group
Re: McWire RepStrap Construction Data - 18 years ago
I just got an update from Zach about the documentation. Initial pass (ie incomplete but a start). Thanks Zach - Nice start.... Bob Teeterby bobt - General
Re: Extruder Rate (request for crackpot ideas) - 18 years ago
Viktor - An I can purchase it where????? Do we need a third extruder for the lemon wedge? Bob Teeterby bobt - General
Re: List of where to find everything to build McWire RepStrap "Seedling" - 18 years ago
Ok - Let me give a concrete example of what I was asking for. McWire RepStrap "Seedling" 1. Watch the video as an introduction about the Computer side of operations. 2. Watch the video as an introduction about the hardware side of operations. 3. Documentation list Select the "McWire Cartesian Bot v1.2" to provide a list of items that need to be gotten for the construction of the Mechanby bobt - Mechanics
Twin Cities, Minnesota (burrr) - 18 years ago
Please add the Twin Cities, Minnesota to the list. Bob Teeterby bobt - Minnesota Twin Cities RepRap User Group
Wildfire on the Internet about RepStrap - 18 years ago
I just check for repstrap on Google. There are 115,000 entries that include the word repstrap. For a term that has only existed for about 2 months I think that we have found a great method to get people to know about tech stuff. Just do a video or 2 on Make and watch the firestorm occur. Bob Teeterby bobt - Mechanics
Re: McWire RepStrap Construction Data - 18 years ago
Sorry I bought the pipes last night at Ace Hardware. The pipes and 3 bags of candy cost $36.57 including tax (MN). Also I have posted on the RepStrap forum a request to consolidate all the links for making the McWire RepStrap system in one place because I am still having problems finding all the info to finish my RepStrap. Bob Teeterby bobt - General
List of where to find everything to build McWire RepStrap - 18 years ago
How about we build a list here of all the information to build a McWire (like Make article) RepStrap. I has become somewhat frustration trying to find all the parts of the information necessary to build one. What I was looking for is a list of URL's that give me the list of parts - OK Where are the diagrams that are printable for hole pattern layout and such. I also know that Zach is workingby bobt - Mechanics
Re: Live CD - 18 years ago
Gentlemen - May I make a suggestion. If we used the live CD image from emc2 with is ubuntu 6.0.6. it is only 673 Mb in size and should hold the additional code from reprap. What we get is a system that can be used either for reprap or CAM operation under emc2. This leverages additional software usage and can get us to a more common liveCD level. They/We even might like it. Bob Teeterby bobt - RepRap Host
Re: Extruder Rate (request for crackpot ideas) - 18 years ago
No - What I want as a finished product is the ability to walk up to it and say "Tea, Earl Gray, Hot" and get a cup of hot earl gray tea in a cup. Welcome to Star Trek. Now all of the technologies exist in very crude form. All we have to do is refine the primary results to a finished product. Here comes hopefully less that 300 years of testing. Bob Teeterby bobt - General