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Re: Update on the E3D All Metal Hotend (Now finally shipping!) 
[Lots of pictures] - 11 years ago
I have a E3D but I have yet to install it. I haven't had the best of luck with finding a reliable filament drive design. Anyone have any recommendations for something that works well with the E3D? I would love to find something that works with a geared stepper motor, I have both geared NEMA17 and NEMA14 motors available. That or direct drive on a beefy NEMA17. I have lots of motors in different sby krafter - General
Re: Cautionary tale for Kickstarter backers: Ultra-Bot folded? - 11 years ago
I should add that while I am pretty positive on Kickstarter I do get annoyed at some of the 3D printer related projects that I feel shouldn't be on there. Sometimes it feels like someone has an idea and without even thinking it through they are like "Hey, this might work, off to Kickstarter!". This dual extruder thing, that failed to get enough funding, is an example of that to me. They clearly wby krafter - General
Re: Cautionary tale for Kickstarter backers: Ultra-Bot folded? - 11 years ago
I've backed 42 projects on Kickstarter. To date none have gone bust or were scams. I really dislike when people imply that many, or even the majority, of Kickstarter projects are scams. Kickstarter makes it fairly clear that you have no guarantee of success. I think people just need to apply a little bit of skepticism to their choices. It is not hard to tell what the going price is for things liby krafter - General
Re: 2010 Bay Area Maker Faire 
- 14 years ago
I am coming. I doubt I will have my machine along. Its a long trip for me from Wisconsin so I will probably fly and don't want to deal with the hassles of bringing equipment along. -- Chrisby krafter - General
Re: "mendell" mcmaster carr part/order list (US) - simply paste into website - 14 years ago
Yeah, if I went with 5/16" threaded rod I would have to replace all other parts with threads and I am not interested in doing anything like that. I just liked the price/options on the 5/16" smooth rod so I thought I would give it a try. @pica your point about not being hardened is very true. I guess my thinking was that I went back to the original assembly data sheet and followed the links to thby krafter - General
Re: "mendell" mcmaster carr part/order list (US) - simply paste into website - 14 years ago
This week I placed an order at McMaster for some parts for another project and, as a test, I ordered some alternatives to the bar and threaded rod parts. I received the stuff today. I will check the straightness tomorrow. So far though they look good. The parts I ordered and am testing are: 93000A516 - M8 threaded rod, steel, Zinc planted $7.95 each 98861A080 - M8 threaded rod, steel, $2.27 eaby krafter - General
Re: mendel complete kit. - 14 years ago
Jeffrey Olijar Wrote: ------------------------------------------------------- > James had me swap pin 6 and 7 to 2 and 3 on the > arduino board and the z axis works when I jog the > x axis on the setup program. This tells me that > it is probably an issue with the software. I am not sure what software you are using but if you are using ReplicatorG, for example, the max feed rate foby krafter - For Sale
Re: mendel complete kit. - 14 years ago
spacexula Wrote: > > Why not ask the people on at Makerbot, and Rapman, > and Reprap, which was the hardest part of the > printer: > > -Building a robot that moves in 3 axis (which he > has) > -Getting a robot that can execute simple 1 line > gcode commands (what he has) > -Building a relatively functioning extruder (which > he has not yet done (He looks to be uby krafter - For Sale
Re: McWire Successor - 14 years ago
Mike, The acrylic for the McWire is all .220" (sometimes called 1/4"). The pieces on the Z axis are doubled up to give it extra strength. I built a McWire using the instructions. I can answer any questions you have about building it. Mine works fine, a little slow, but it does work. That said, I changed a lot of the stuff I bought when I first built it. For an extruder I am using the Makerbotby krafter - General
Re: mendel complete kit. - 14 years ago
I bought a set of vertices from James, but mine did not turn out as nice as those. I mostly did it to get a leg up on building my Mendel. I figured it meant fewer parts I had to print with my McWire and I could replace them once I had a working Mendel. I will try to use them but mine are pretty rough. Here is an example, and this is about average for the ones I received. Some are better, some aby krafter - For Sale
Re: McWire Successor - 14 years ago
I have a McWire that I built and I've changed the motors and stepper drivers to get up to 8mm/s. I imagine that if I switched to ACME threads I could go even faster. I am happy enough with 8mm/s though because I only built this to make parts for a Mendel. I don't really mind waiting for it to finish printing parts. I think, when thinking about the successor for the McWire, is it is important tby krafter - General
Re: Belt Versus Screw Drive - 14 years ago
I built a screw drive McWire. I build it as a screw drive because I could acquire the parts from McMaster and the local hardware store and easily put it together with limited tools and experience. If I had a choice, watching how painfully slow the McWire is, I would go with belt drives. In fact I am experimenting with converting it to belt drives. I've managed to get my McWire up to 8mm/s by uby krafter - General
Re: Reprap Electronics Devolpment - 14 years ago
I guess I miss-understood what you were getting at. I thought the idea was a generic backplane so that I can plug in any kind of board I want. Some with stepper drives, some with CPU's, etc, etc. The voltage thing I mentioned is simply that lets say I want to drive my steppers at 15 volts. The driver chips support up to 35 volts. There is no way for me to feed 15 volts, or any other voltage, intby krafter - Controllers
Re: Reprap Electronics Devolpment - 14 years ago
The backplane is a very interesting idea. I looked through the pinouts but wasn't sure where I would connect a few items. For example if I have an analog output. I see analog input but no analog output. Another question is about alternative voltages. Lets say I want to run something, steppers for example, at 15 volts. It would be great to be able to supply that voltage to the pack-plane insteby krafter - Controllers
Re: Mendel Machined Extruder Parts Kit (Extruder Version 2.0) - 14 years ago
Hey, If there are any left I am interested in the kit. Thanks -- Chrisby krafter - For Sale
Re: Help with sticking stepper motor - 14 years ago
I appreciate all the suggestions. RonP I will take a look inside and see if I see any of the items you noted. I did end up getting a spare from Keling. They had the same model on-hand and shipping from Chicago so I ended up getting it next day, I live just north of Chicago. My plan is to install the new one in my McWire and then take my time researching the old one to see if I can find the souby krafter - Controllers
Re: Help with sticking stepper motor - 15 years ago
I did open the motor and everything 'looks' fine on the inside. I spun the bearings a bit and they felt ok. Its really odd. It will spin fine many times. I can spin the shaft 30+ times without any change and then suddenly it feels like it hit a huge resistance. Like the magnetism suddenly shot up. If I set it down for a bit or tap on the body, then it goes away. I will check the bearings agaiby krafter - Controllers
Help with sticking stepper motor - 15 years ago
Hey there, I have a Keling Nema 23 stepper motor for my McWire bot that is giving me trouble. The problem happens even if the motor is not connected to the machine or control circuits. I can make it happen by holding it in my hand and spinning the shaft. After several rotations it just kind of jams, stops turning. If I work through it, or tap it, it seems to go away. A few more rotatby krafter - Controllers