Show all posts by user
Java - everyone loves it and it works well everywhere. Maybe.
Re: Project 10 to the 100th - 16 years ago
Ru Wrote: ------------------------------------------------------- > On the contrary, this is google business as usual. > Pretty much all the exciting products that have > popped out of google have been designed by someone > else, and then purchased, ajaxified, rebranded and > released. I can't think of anything that they > developed solely in-house which went on to become > aby Kyle Corbitt - General
Re: Project 10 to the 100th - 16 years ago
Ok fine, I think everyone agrees that RepRap doesn't need Google's money and it would probably be foolish to apply for this. But that doesn't mean that it's necessarily a bad program - I suspect that there will be a lot of really great ideas that come out of this from unexpected sources that would otherwise be neglected. Someone with a brilliant idea and access to lots of venture capital and tiby Kyle Corbitt - General
Re: New user, several new ideas. - 16 years ago
Ru Wrote: ------------------------------------------------------- > What they generally don't need is assistance with > weaving and the like... I suspect that everywhere > that gets chilly enough to require clothing susses > out making clothes avery, very long time ago. Sure, but Europe knew how to make clothing for a good long while before the Industrial Revolution and it still turnby Kyle Corbitt - Mechanics
Re: New user, several new ideas. - 16 years ago
Quote my limited understanding of this technology leads me to think that it senses mass vs. non-mass extremely sensitively by picking up the distortions mass creates in the earth's electromagnetic field. This is very exciting stuff when it's picking up a crack 3 mm long and 18 mm below the surface of an aluminum plate - evidently not because it's made of metal, but because it has mass. Accordingby Kyle Corbitt - Mechanics
Re: How to get extrusions to stick well? - 16 years ago
Nice work! Removal would be a trick though... the soak-it-in-water approach is good because it doesn't require much human effort, but on the other hand I suspect it would take quite a while to dissolve away Perhaps there is some sort of acid or catalyst that would cause the sugar to dissolve rapidly, without affecting the plastic?by Kyle Corbitt - Mechanics
Re: Getting started in Seattle - 16 years ago
Welcome. There's only been one meeting to speak of, and we don't have any sort of meetup planned in the immediate future. However, you might see some of us at Seattle Robotics Society meetings if you attend those. . The next one is in a couple of weeks.by Kyle Corbitt - Washington, Seattle RepRap User Group
Re: Why RepRap is failing - 16 years ago
Kitep Wrote: ------------------------------------------------------- >> The reprap design can, and will, evolve. This >> makes it possible to print out a next gen reprap >> when teh designs are available. Sure, you can >> improve your repstrap design to your heart's >> content, but when someone else has already made >> the designs for a better extruder or a tooby Kyle Corbitt - General
Re: Could one use PTFE tape... - 16 years ago
Forrest Higgs Wrote: ------------------------------------------------------- > Yes, it will. I originally found the "insulated" > nichrome that RRRF sells and have extensive > experience with it. The insulation eventually > (service life measured in dozens of hours at the > current ratings we use it at) perishes. When it > does, it will short against your extruder barrel. Tby Kyle Corbitt - Plastic Extruder Working Group
Re: Could one use PTFE tape... - 16 years ago
Forrest Higgs Wrote: ------------------------------------------------------- > Kyle Corbitt Wrote: > -------------------------------------------------- > ----- > > > > I think I may just wrap the nichrome around the > > heater barrel with some thermal grease and call > it > > good enough - it seems to hold its shape pretty > > well on its own. Don't knoby Kyle Corbitt - Plastic Extruder Working Group
Re: Could one use PTFE tape... - 16 years ago
I asked this same question a month or two ago. The concern is that if a little bit of extra heat got pumped into the tape (Nophead is extruding things as hot as 230C, and PTFE breaks down around 250-260C) it could potentially produce toxic fumes. I think I may just wrap the nichrome around the heater barrel with some thermal grease and call it good enough - it seems to hold its shape pretty welby Kyle Corbitt - Plastic Extruder Working Group
Re: Patent Infringement (Stratasys) - 16 years ago
Files can still be sold over the internet, even with the prevalence of p2p sites. iTunes still has a successful business model. But you're right, I wouldn't bet my future income off of it. Best to find some value added.by Kyle Corbitt - General
Re: Skyglass - 2D-application for RepRap - 16 years ago
That's a very creative use. I like it.by Kyle Corbitt - Plastic Extruder Working Group
Re: Cartbot with all three axes controlling the toolhead - why not? - 16 years ago
Joshua Merchant Wrote: ------------------------------------------------------- > It's rather simple really LOL. Sorry, as you were.by Kyle Corbitt - Mechanics
Re: SOMEONE TO SHOW WHERE ALL JAVA CODE IS AND HOW TO MAKE IT WORK - 16 years ago
It's linked to directly from the front page, I don't think it is that hard to find?by Kyle Corbitt - RepRap Host
Re: Finished cartesian bot using bike chain - 16 years ago
I'm a bit confused - why all the effort to cast roller chain? It's available worldwide and is much cheaper/more accessible than most of the other "vitamins" that RepRap depends on. Not to mention that in my opinion Darwin doesn't have anywhere near the resolution necessary to make an acceptably toleranced but also low-friction chain. Even commercial bike chains, manufactured with tolerances orby Kyle Corbitt - Mechanics
Re: Bug in gcode firmware? - 16 years ago
Ru, I disagree. While it is true that arc drawing codes aren't used right now and certainly don't need to be, I don't think that they're necessarily useless. For example, Enrique's script has a corner-filleting option that would be a natural fit for the arc codes. Implementing them properly would decrease the number of serial messages sent, at the very least. Also, standards compliance is useby Kyle Corbitt - RepRap Host
Re: Granule Extruder meets local store - 16 years ago
Just thought of a possible way to minimize the slop around the edges and mitigate my previous concern: use oversized washers, and then lathe the entire assembly down to the correct size once it has been assembled. Of course, I still haven't heard a compelling advantage that this has over the wood auger idea... that seems much simpler.by Kyle Corbitt - Mechanics
Re: newbie, but enthusiastic - 16 years ago
Forrest Higgs Wrote: ------------------------------------------------------- > > > > It would be sensible to get the sanguino, as it > > 'future proofs' your setup somewhat. It should > > just be a drop-in replacement for the arduino. > > > > Until Zach or somebody actually ports the Darwin > firmware to Sanguino and gets a real Darwin > printing that iby Kyle Corbitt - Reprappers
Re: Anti-ooze nozzle - 16 years ago
I know there was a thread here some weeks ago where we discussed internal pressures and came up with a number, but I can't seem to find it now! I'll post back if I run across it. EDIT: Found it. In his first post in the thread at , Forrest estimated that the internal pressure is in the 17-18 bar ballpark. RE-EDIT: Looks like forrest beat me to it.by Kyle Corbitt - Mechanics
Re: How to get extrusions to stick well? - 16 years ago
Check out nophead's blog - I'm not sure if he ever ID'd his mysterious base material, but at the very least his rafting/temperature build strategies are worth checking out. Also, IIRC Metalab is printing in ABS at 220 C, so that might work for you.by Kyle Corbitt - Mechanics
Re: Wildcat CAD - 16 years ago
Looks good, but it still has no linux and limited Windows support, afaik. Booleans aren't built yet either, it would appear. Could become good someday, but with only the one volunteer developer that "someday" will be a long way out.by Kyle Corbitt - RepRap Host
Re: Drive Belt/Chain - 16 years ago
I think for printability's sake we may end up having a throwback to the old Zaphod days, where iirc there was a central drive gear that turned all four (three back then?) corner posts. I think that trying to print belts will be gimmicky at best - they're generally made from materials much more flexible than any of the plastics we've been trying, I think. And chains require relatively high tolerby Kyle Corbitt - Let's design something! (I've got an idea ...)
Re: Anti-ooze nozzle - 16 years ago
No, I don't think anyone has tried it but interesting idea. The ball valve would have to be very close to the actual extruding location though, I would think, for it to be effective. I would think that a water-tight seal would be necessary. While molten plastic is (apparently) much more viscous than water or most other liquids, it will also be at relatively high pressures, so if there are cracby Kyle Corbitt - Mechanics
Re: Where to start - 16 years ago
I'd probably start from looking at the build instructions here: Then to actually source your parts, check out the parts lister here: The documentation is impressively good. Getting to know it is worth your time.by Kyle Corbitt - Reprappers
Re: PhD topics? - 16 years ago
Wow, when I read your post my mind immediately jumped to something along the lines of what Forrest suggested. I second that. It would be really useful - if we can consistently model warping behavior with software (either completely virtually or through an evolutionary but still computer controlled trial-and-error approach), it should be possible to compensate for it and produce even more accuraby Kyle Corbitt - General
Re: CMM (Coordinate-measuring machine) - 16 years ago
VDX Wrote: ------------------------------------------------------- > ... another idea for a low-cost but high-accurate > probe-head: > > Atach an ultrasonic resonator to a tool-tip and a > microphone to the bed. > > When the tool-tip touches the surface of the > object, the microphone senses the contact ... > > Viktor Wouldn't the behavior/accuracy of such a sysby Kyle Corbitt - 3D Scanners, Book Scanners, and Optics
Re: Teething problems - 16 years ago
That certainly sounds unusual. I can't imagine that motors would work at speed but not slowly because of friction - unlike with servos, steppers should have maximum torque at their slowest speeds and it only decreases from there. Are you saying that the motors worked fine individually before being put in the frame? See if you can replicate that behavior. The steppers should "go stiff" on poweby Kyle Corbitt - Reprappers
Re: Teething problems - 16 years ago
I'm sorry that I don't have much insight into how to solve your problem, but I can confirm that this definitely isn't normal behavior! A stepper motor when properly configured should step when it is told to, and never at any other time. Single stepping should not pose a problem. Can you define "go crazy" a little more clearly? It might help if you post what stepper motors/electronics you're uby Kyle Corbitt - Reprappers
Re: Granule Extruder meets local store - 16 years ago
Neat concept. I'm afraid your outside diameter won't be constant though, which would mean that you won't be able to get a pipe that fits around it and forms a tight seal.by Kyle Corbitt - Mechanics