Prusa has a heated bed. The lack of any heated build platform on the ultimaker would be a deal breaker for me. ABS is my material of choice and bad things happen if the bed is not heated.by Andrew Diehl - Reprappers
It can feel smooth to the touch, but running your finger nail across the surface will reveal it is definitely layered. What are you trying to do that requires smoothness? It may help us explain if it is feasible.by Andrew Diehl - Reprappers
> Does your gcode contain M101 and M103 words? we > use those to trigger retraction and preload. This needs to be in the comments of the code in the config file right before E_STARTSTOP_STEPSby Andrew Diehl - Firmware - experimental, borrowed, and future
I've found comb avoids all holes unless you have multiple "towers" and then it's pretty hopeless. Strings sometimes form over the holes anyway though, as the filament strings stretch over the hole even though the nozzle never does. Probably worth trying to increase your retract speed as the simplest solution?by Andrew Diehl - Skeinforge
I think it's a little early to say how well or poorly it works. It is very new. Looking at the makerbot site you'd swear every print cam out looking perfect right after you assembled it, too Anyway, back on topic...by Andrew Diehl - General
I've found that having a short distance from pinch wheel to tip nearly eliminates the delay. aka why bowden extruders are horrible for accuracy. I run my machine with roughly 2"" in-between, and will likely make it down to under 1.5" soon. Of course, active cooling of the extruder then becomes necessary.by Andrew Diehl - General
At least the tabletop dimensions use a belt for the x/y axis, and something threaded for the z. Looks like a ~60mm/s travel speed for their low end printer, too.by Andrew Diehl - General
If you have the screws I'm sure they will work fine. Belts can be just as good and for less $$, but since you already have the screws it really doesn't matter. The axis configuration you use is largely decided by the machine's desired working area/footprint/simplicity. XY movement by the extruder works best for large machines, and separate x/y for the bed/extruder works well for smaller machineby Andrew Diehl - General
Solidworks also does what you seek, but is sadly unaccessible to most people's budgets.by Andrew Diehl - General
I'd say extruder and x/y/z repeatability are pretty equal in terms of importance to quality. The mass issue with a 3d printer is a tricky one, mostly because it interfered with the two things everybody wants; low cost and high speed. While there are no significant cutting forces, the mass of the extruder needs to be supported as well as the forces to quickly move said mass. People have trieby Andrew Diehl - General
In fairness the "new" makergear one is a clone of the Up!...by Andrew Diehl - General
Frequency limit. Above about 20Hz it is in the highly audible range, and your machine sounds terrible regardless of whether it is actually shaking itself apart. Plus, other things on your desk/workbench start to shake. I would also bet for you to greatly exceed the resonant frequency it would be outside the stepper motor's power output. Just my opinion though. As for per axis, I'd argue eachby Andrew Diehl - Skeinforge
It is likely slow because you have the steps per mm or maximum feed rates incorrectly set in your firmware. Teacup works quite well on all the atmega chips commonly used for reprap.by Andrew Diehl - Firmware - experimental, borrowed, and future
I realize this is likely quite complicated, but I think it would be highly useful to the reprap community (and me) if someone(s) were to make a plugin for skeinforge which limits the frequency of infill moves to a set value. Ideally, there would be 3 settings to adjust: Frequency, minimum angle between moves, minimum number of moves. Frequency: adjusts how many moves can take place per secondby Andrew Diehl - Skeinforge
The current acceleration makes the rest of the print slow if there are a lot of curves, so I currently run without any acceleration. After considering the issue and a lot of googling, I think it is a g-code solution as opposed to a firmware one. I think Nophead had the same issue as I am with high frequency infill.by Andrew Diehl - Firmware - experimental, borrowed, and future
I have found different colors of ABS have quite different adhesion properties. Black will stick to anything, but fluorescent green is like Teflon...by Andrew Diehl - Reprappers
So when can teacup make the official jump from experimental to mainstream? I've been having the same success as architect. Damn near perfect prints. Now if only there were a way to slow down the really short infill so it doesn't shake my worktable... Keep up the good work!by Andrew Diehl - Firmware - experimental, borrowed, and future
there are a lot of em on Google. I was looking for somebody with experience. I gave in and called village plastics, and they might be willing to get small spools in depending on quantity. I wonder how much filament Makerbot sells a month...by Andrew Diehl - General
I fear the rumors are incorrect. They do not sell spools smaller than 10lbs. Coils yes, spools, no.by Andrew Diehl - General
Does anybody have an ABS filament manufacturer in the US they would recommend? I've already contacted New Image Plastics, but would like a few reputable places to get quotes from. The further Northeast, the better. I'll be buying at least 50lbs of plastic for the first order so minimum quantities isn't a huge issue. Thanks.by Andrew Diehl - General
Have you tried running teacup firmware on the gen6? I never get any pauses (except the rare comms error) using 16th micro-stepping on all motors, and printing up to 60mm/s. Mind you i'm using my own electronics, but all that stuff is basically the same...by Andrew Diehl - General Mendel Topics
No oozebane, just stepper retract at 10mm/s for .5mm The support layers essentially butt up to the inside edge, with a very small amount of bonding. It looks like it will be impossible to remove, but a light tug/twist with a pair of needle nose pliers pulls it right off for me. Of course, you will never get a perfect surface finish with same material support, though.by Andrew Diehl - Skeinforge
Support is weird in skeinforge. It was lumped with raft when it really needs it's own tab. I still have no idea why the interface infill density ratio is what determines the support density ratio. First, turn off clip. It always messes with my support for some reason. Activate: Raft Add raft, elevate nozzle, orbit. I use a support flow rate over operating flow rate of (1), Interface infill dby Andrew Diehl - Skeinforge
The key to a good T-slot bot is copying most of the Mendel's mechanics, but with the higher rigidity and ease of assembly t-slot and 12mm shaft offer. I'm almost done with my commercial version of the T-slot bot. There will be a full entry in the wiki as soon as I'm finished and have opened up sales. The T-slot makes the whole project look exponentially more professional. It also makes a bot yoby Andrew Diehl - General
Thank you very much. I swear I looked for that for an hour and only ever found a really old version. I guess I should add the files to the wiki page. EDIT: On closer inspection that is only the 6x8 version. Guess i'll just have to modify it to go 8x8by Andrew Diehl - General
Are there any design files for the heated bed shown here or am I missing something?by Andrew Diehl - General
How well is the pulley attached to the shaft? Usually when my walls get wavy it is because the pulley is slowly wiggling loose. Other things to question/try, Are your z axis threaded rods straight? if the rods are slightly bent it can cause a wavy pattern by skewing the entire x asis on it's way up. Is your belt tight? Can you wiggle the carriage at all by hand when the steppers are holdingby Andrew Diehl - General Mendel Topics
glad to hear it.by Andrew Diehl - Wanted
I'd gladly make you the ABS parts you need for free, but shipping UPS from USA to AU is close to $100USD Any idea for a less expensive shipping method?by Andrew Diehl - Wanted
How do you hold the card stock down?by Andrew Diehl - General