Within limits. As you scale up, you start to need thicker bars - 10mm instead of 8mm for example. Also, as your print bed increases in size, so do your issues with temperature control, curling, adhesion, etc.by jbernardis - General Mendel Topics
It's hard to tell if you fried the pololu's from your description. However I will say that they are extremely sensitive. One sure way to fry them is to remove and/or reinstall them while under power, or to disconnect/connect the motors while under power. Always disconnect the power source when working in this area.by jbernardis - RAMPS Electronics
What gauge wire are you using between the ramps and the PCB. You need a decent gauge for the amps being sent here. I'd say 18 or larger.by jbernardis - Reprappers
If you want to mesh them together so that they all print together layer by layer, then you have a job on your hands. But if you arrange them on the bed so that you start with the furthest and move towards the home position, and if you make sure they are far enough apart that the hot end or any fans are not going to collide with previous prints, then it could be as simple as concatenating the filby jbernardis - Slic3r
MPower Wrote: ------------------------------------------------------- > After calibration, G1 E5 should make the printer > move 5mm of filament. As in: 5mm of your filament > pass from your spool, through your hobbed bolt (or > whatever you are using). On the other hand, in > term of printed threads, the slicing software > calculates how much filament should be melted in > orby jbernardis - Slic3r
On mine, the LED is ON until it is tripped - at which point it turns off.by jbernardis - RAMPS Electronics
Hit the port button on pronterface and look at the refreshed list of ports. You might do this both before and after connecting the printer to see what's different. Choose the new port and it should be the printer. I'm not sure how windows does it, but in Linux, USB ports can move around. If I disconnect and then reconnect the printer - which essentially happens every time the printer is turneby jbernardis - Reprappers
I have a part I need to print that has 1.8mm radius holes centered on a line 3mm from the edge. This means there should be 1.2mm between the hole and the edge of the part. When drawing the perimeter, Slic3r incorporates circling the hole into the perimeter on both passes. This means that there is a spot (actually many) where the perimeter is not contiguous. The two sides touch one another, anby jbernardis - Slic3r
I feel like a broken record (remember those) saying this, but check your solder connections, and then check them again. A weak solder joint caused this same issue for me, and cleaning out joint and re-soldering fixed it. Also, what gauge wire are you using between the RAMPS and the PCB?by jbernardis - RAMPS Electronics
The maybe it was scale down. In the STL file, I measured a dimension with meshlab at about 100 units. Turns out that the US measurement within the CAD program was 0.4 inches - about 10 millimeters. So I had to convert from 100 to 10.by jbernardis - 3D Design tools
Blue tape is the tape used for masking for painting. You can find it at any hardware - at least in the US.by jbernardis - Reprappers
I am trying to print some parts for my local high school First Robotics Competition, and they do all of their "drafting" in inches. I do all of my printing in metric. I tried interactively with my printer setting units to inches, and then also interactively entering some movement commands, and it still seemed to move in millimeters. I assumed, for example that a "G1 X1 Y1" would move to the (1by jbernardis - 3D Design tools
I tried it out on a simple cube. What I observed was that it moved the starting points for the perimeter into corners. In my case, with such a simple object, it started in the same corner for every layer. When I examined the cube after the print, I noticed that there were still some issues in the starting corner. It was less noticeable because it was coincident with a corner, but it was stillby jbernardis - Skeinforge
This looks great - I've said before that I was unhappy with the results from jitter. I'm definitely going to give this a try - hopefully tonight.by jbernardis - Skeinforge
I would echo acc's questions. I love the fact that we have all of these user-contributed plugins, but we need someway to get them into an official source tree. As things stand now, I've incorporated 5 user-contributed plugins. If there ever is a new release of skeinforge, I'm going to have to think long and hard about whether or not I want to take it.by jbernardis - Skeinforge
I generally heat both the hot end and the bed before I even hit the print button. That way I can use the extrude button to make sure the hot end is primed before I start things going.by jbernardis - Slic3r
You're using skeinforge. Make sure you have the dimension plugin activated. Several people have reported this, and I'm pretty sure its the dimension plugin that they need to turn on.by jbernardis - General Mendel Topics
Is it OK to run 3 fans off of the D9 port of the RAMPS board? I'm currently running 2, on opposite corners of the frame, and I occasionally have curling issues in the left rear - the farthest point from either fan. The way I figure it, each fan draws about 0.25 amp, but the D9 circuit is intended to operate a hot end which can draw in excess of 2 amps. So it seems I ought to be safe to add a tby jbernardis - RAMPS Electronics
That's what brim is. Slic3r supports brim, as does skeinforge with a user-written plugin.by jbernardis - Reprappers
So the literal names inside the config file can be used inside gcode alteration files? Is there any special syntax? Or do we just use the bare text?by jbernardis - Slic3r
I agree with this. One of the pop-up help windows mentions that you can use place holders, but I have yet to find a list of the place holder names that are available to be used.by jbernardis - Slic3r
It depends on the size of your pulleys, but if pulley-tooth-count * belt-pitch has changed then yes you will need to edit your firmware settings. Belt pitch for gt2 = 2.by jbernardis - Reprappers
Yes - if you're using RAMPS, you should be on 33 or 34 depending on whether you have 2 extruders or 1.by jbernardis - RAMPS Electronics
Does anybody know what's happening in the development of skeinforge? The latest version - still labelled as beta by the way - is dated March of 2012, and since that time there have been no less than 14 releases of slic3r. Maybe 14 releases is too many in that amount of time, but we see the authors engaged in the process. I realize all of this is freeware, and the author is under no obligationby jbernardis - Skeinforge
Thanks. It sounds like 3mm and Bowden go quite well together. I'm going to order some tubes from McMaster and start experimenting. Although fine for experimentation, I don't like the use of "vertical" extuders for this because they need to have an unnatural mounting scheme to allow the tube to come out of the bottom. I like what I call a "horizontal" extruder, like the airtripper, but haven'tby jbernardis - Reprappers
Wow. Two opposing views from 2 veterans who have 4500 posts between them. I guess this argument definitely has two sides, but sublime points our the there is empirical evidence that 3mm and geared extrusion are both possible. I prefer to use 3mm filament, but have thus far been unable to find a satisfactory direct drive extruder for it. I guess there is room for some experimentation though.by jbernardis - Reprappers
Can anybody help me determine what the current thinking is for a successful Bowden setup? I glean from what I read that 1.75 mm filament is considered the better choice. Is this true? Also, it seems that retraction speed is very important which would seemingly rule out extruders with a reduction gear - that is direct drive extruders would be preferable. Again - am I right here.by jbernardis - Reprappers
Can you do a layer by layer comparison? I've seen differences between Slic3r and skeinforge, but not this great. Upon investigation I think a large bit of the difference was when bridging is necessary - Slic3r only bridges the gap that needs bridging while skeinforge bridges the entire layer which takes quite a bit longer. You might see similar differences once you peer into the layers themselby jbernardis - Slic3r
Any time you energize a coil from your arduino, be it a motor or a solenoid or a relay, there is a potential for damage to the arduino itself. Admitedly it's small, but it can be avoided with about $1 worth of parts. I think it's just a good idea. mitchese suggestion for using a relay board is a good one, because these should implement the protection circuitry. Read the web site at the link Iby jbernardis - RAMPS Electronics