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Java - everyone loves it and it works well everywhere. Maybe.
Re: Autodesk - 15 years ago
I regularly use SolidWorks. I find it much better than Inventor. Dementedby Demented Chihuahua - RepRap Host
Re: 25% done
- 15 years ago
Hey Mike, Nice progress! I especially like the 80/20 laptop holder! That's cherry. A couple notes. If you can, avoid the threaded rod. Travel times are too slow. For me they are painfully slow (~2mm/second). Give a bit of thought to some sort of timing belt or rack and pinion setup. The speed increases far outweighs the potential loss in precision. The electronics box you noted about the OIT Rby Demented Chihuahua - Reprappers
Re: My granule hopper concept. - 15 years ago
The books I have mention something like that, Wade. They go over the equations governing the system but, as is often the case, we can write down the differential equations much more easily than we can ever solve them. They said that, in practice, a machine is often just built and relevant data is extracted from actual test runs to build up a performance table of how things work under given conditby Demented Chihuahua - Mechanics
Re: Let's list people's machines and abilities - 15 years ago
Hehe, This is turning out to be a fun post...didn't think it was gonna be worthy anything when I first started reading it...here goes! My list is short but growing: 1 (sorta-functional) McWire RepStrap with a 150x115x120 mm build volume and something like +- 0.01 resolution. (resolution getting better as I'm replacing my hose motor couplings with aluminum ones!) 1 Drill press (12" Ryobi) 1 Benby Demented Chihuahua - General
Re: ....and it begins!!!!!!! (mcwire build) - 15 years ago
You scan a broken part...you then print it...now you have two broken parts! ;-) Dementedby Demented Chihuahua - Reprappers
Re: My granule hopper concept. - 15 years ago
Wade is exactly right here. Commercial injection molding machines use variable diameter augers. On some of them they have grooves cut into the ID of the feed barrel. From the book "Plastics: Product Design and Process Engineering" by Harold Belofsky "In a grooved feed barrel, the first two to five turns in a the feed zone have uniformly spaced shallow grooves machined into the ID of the barrel.by Demented Chihuahua - Mechanics
Re: Drive Screw - 15 years ago
Ah! That's a great idea, Nophead! I'll do that...awesome! Dementedby Demented Chihuahua - Mechanics
Re: Drive Screw - 15 years ago
I get about 2.7 mm/sec. Sad. My z gets about 1.5 mm/sec. I haven't worked out how fast my Extruder is truning yet, not as easy as the axis to figure--and I'm lazy--but it sounds like it is turning much faster than that...one more issue to tackle when I get my machine back online...bleh. Dementedby Demented Chihuahua - Mechanics
Re: Drive Screw - 15 years ago
@Wade, I can run it at a setting of 1 on the Extruder Exerciser...that wasn't the problem...it's that even at that speed with a .35 mm tip, it was pushing out too much plastic. I'm not sure what RPM that translates into but it seemed really slow. Like, ridiculously slow. I've bought the Magnetic Rotary Encoder and plan to get it together and on my machine eventually but the PIC electronics don'tby Demented Chihuahua - Mechanics
Re: Steppers stil not stepping - 15 years ago
Hmm...not sounding like a preferences problem to me. Have you changed any of the prefs? If so, which ones? If you are booting into the liveCD each time, then the prefs given should mostly work...we never had any problem with that on ours. Go back and re-check your wiring from the Stepper Driver boards to the steppers. Are they connected in the right sequence (Blue, Green, Brown, White)? Have youby Demented Chihuahua - Controllers
Re: ....and it begins!!!!!!! (mcwire build) - 15 years ago
Ah, sounds good! I especially like the Formica stuff for your mating surfaces...sounds interesting. Though, I have a functional McWire--except for the heater barrel right now which is being replaced--and I have seen absolutely no wear on the PTFE strips. Hopefully it doesn't develop in the future but if it does I'll remember your little tip. Do you already have the skate bearings and the nuts aby Demented Chihuahua - Reprappers
Re: Drive Screw - 15 years ago
How expensive is "expensive"? And, I have some junk steppers sitting around that I might use...assumably they are around a 7.5 to 15 degree step. They are NEMA 17's. Because of their smaller size and large step, would I be right in assuming I would get more power out of them using the Gen 1 driver board than I do out of the larger steppers? Or am I completely backwards? Dementedby Demented Chihuahua - Mechanics
Re: Steppers stil not stepping - 15 years ago
What speed do you have your steppers set to run at? Do they make any noise when you attempt to move them? Can you even open the Stepper Exerciser? More info please. Dementedby Demented Chihuahua - Controllers
Re: Puzzle Printing - 15 years ago
Aside from the seedy ads...that thing is amazing! Can you give us more info on it, Viktor? Dementedby Demented Chihuahua - Let's design something! (I've got an idea ...)
Re: Drive Screw - 15 years ago
Yeah, I have the 1/4-20 all thread and a 200 step motor...runs horribly slow...I have a hard time slowing my extruder down enough to not overwhelm it. It's become a real problem for me. Dementedby Demented Chihuahua - Mechanics
Re: Where to get extruder plastic parts from? - 16 years ago
Those are different plastic parts than the ones you are getting the machined bits for. You want the MK II extruder plastic bits. AFAIK no one is making those anymore. You have to get someone to print you a set. Dementedby Demented Chihuahua - General
Re: I modeled the McWire Base in Google Sketchup. - 16 years ago
Are you gonna do the rest of the assembly? That would be pretty sweet. I don't know how useful it would be though...not that you shouldn't do it. I like cool things of dubious value! Dementedby Demented Chihuahua - General
Re: Schematic and Code for Tommelise 2 - 16 years ago
Might search on Forest's blog. Or you could PM him through here. Dementedby Demented Chihuahua - Controllers
Re: McMaster-Carr 3D Models - 16 years ago
agree with d0ubled...had this discussion with many a prof...people seem to be confused on it and not in any one definable way. I'm sure the coming proliferation of RepRap's (starting with Wade's!) will force a clear understanding of this on all of us. Dementedby Demented Chihuahua - General
Re: McMaster-Carr 3D Models - 16 years ago
hehe, back to that old patent issue... Dementedby Demented Chihuahua - General
Re: Machined Extruder Parts - 16 years ago
Ah! Most excellent! I'd be glad to buy at least one of each from you! Maybe work out some barters in the future for other stuff as I have my machine completely working except for that darn barrel. Even got some pretty good prints out of it as it popped! Let me know on the pricing and such at your convenience. Dementedby Demented Chihuahua - For Sale
Re: Upgrading Java to Jre6 from Jre1.6.0_07 problems - 16 years ago
you also did the install of Java3D? Other than that, no. Sorry. It worked for me so I thought I would post it. Was it working before the JRE6 update? Dementedby Demented Chihuahua - RepRap Host
Re: Machined Extruder Parts - 16 years ago
um, I don't want a full kit...my extruder body works very well not that I have it c-clamped *AND* bolted together. What I wanted was the PTFE and Heater barrel parts...no nozzles, got plenty. Also, I would stay away from the flexible shaft design...sucks a@*!!! Very unstable and worthless... If you have pieces you want to sell, let me know. As I said, I would like PTFE and Heater barrel, in finiby Demented Chihuahua - For Sale
Re: Opto EndStop - 16 years ago
hehe, did the same thing myself but only with one of the boards...got smart that time and tested before moving on...that's the value of testing! Dementedby Demented Chihuahua - Reprappers
Re: Heating problem - 16 years ago
Glad to save you trouble. Dementedby Demented Chihuahua - Mechanics
Re: Heating problem - 16 years ago
Steve, Yeah, the nozzle height seems to change for me based on a bunch of factors...heat being the main one... I just use that period where it is drawing the line up and back before it prints the part to position the height by hand...a very dodgy method but it works. Dementedby Demented Chihuahua - Mechanics
Re: Machining parts for the extruder...anybody doing it? - 16 years ago
Larry, 3/8-16 is what I remember too... Dementedby Demented Chihuahua - General
Re: Heating problem - 16 years ago
There are two sets of jumpers on your extruder board after you get done testing it. They are both on the three pin headers. One says Min/Speed the other says Max/Empty. Take the jumper off of the Max/Empty header and your problem is solved. You don't need to be at 280by Demented Chihuahua - Mechanics
Re: Machined Extruder Parts - 16 years ago
Interested but where are you located? US or UK or Other? What prices are we talking about or what trades are you willing to do? Dementedby Demented Chihuahua - For Sale