kevin-osborn

I have some JustPLA white, but it gets brittle on me. breaks off in the bowden. Won't be buying that again. If I cut off a length so it's not coming off the spool it usually works ok.

Hi, I recently tried to print a plate of materials, and the head hit the glass clips. Should I change the default head size or bed size settings in Cura? or are my fan mounts subtly lower than other peoples'?

Here's another example. In this less tiny case, the g-code is defferent, but the time estimate is approximately the same. The Codes don't correspond exactly to the speed I set, which makes me think that Cura is inherently imposing some limit. Printer: Ultimaker 2, minimum time per layer set to 0, all the speed modifiers are also 0 except for travel speed which is set to 150. The print speed was set to 50 and 150 respectively for this test. Here's a scaled down (25.4mm high) cute spocktipus at 150mm/sec. Note no speed setting on this layer. It was last set just before Layer 4 to G1 F7020, which I believe works out to 117mm/sec. On Layer 3, the speed is set on every line that extrusion takes place. ;LAYER:20 G0 X118.72 Y120.94 Z2.30 ;TYPE:WALL-INNER G1 X118.61 Y120.90 E747.54237 G1 X118.56 Y120.89 E747.54455 G1 X118.51 Y120.87 E747.54674 In the 50mm/sec example the speed is set to 50mm/sec on the first extrusion line of the layer: ;LAYER:20 G0 F9000 X118.72 Y120.94 Z2.30 ;TYPE:WALL-INNER G1 F3000 X118.61 Y120.90 E747.54237 G1 X118.56 Y120.89 E747.54455 G1 X118.51 Y120.87 E747.54674 G1 X118.44 Y120.86 E747.54928

Hmm, good point, however I noticed it on a bigger print (cute-spocktipus) that was scaled to an inch tall. Now when I turn minimum layer time to 0, I still get a print estimate that stays the same unless I get to really low numbers. The Gcode isn't as consistent though, there seems to be less speed setting (G1 Fsomething) in the 150mm/s file.

Here's the profile (150mm/s) The print speed was the only thing I changed in the above settings [profile] layer_height = 0.10 wall_thickness = 0.8 retraction_enable = True solid_layer_thickness = 0.6 fill_density = 20 nozzle_size = 0.4 print_speed = 150 print_temperature = 220 print_temperature2 = 0 print_temperature3 = 0 print_temperature4 = 0 print_bed_temperature = 70 support = None platform_adhesion = None support_dual_extrusion = Both wipe_tower = False wipe_tower_volume = 15 ooze_shield = False filament_diameter = 2.85 filament_diameter2 = 0 filament_diameter3 = 0 filament_diameter4 = 0 filament_flow = 100.0 retraction_speed = 40.0 retraction_amount = 4.5 retraction_dual_amount = 16.5 retraction_min_travel = 1.5 retraction_combing = True retraction_minimal_extrusion = 0.02 retraction_hop = 0.0 bottom_thickness = 0.3 object_sink = 0.0 overlap_dual = 0.15 travel_speed = 150.0 bottom_layer_speed = 20 infill_speed = 0.0 inset0_speed = 0.0 insetx_speed = 0.0 cool_min_layer_time = 5 fan_enabled = True skirt_line_count = 1 skirt_gap = 3.0 skirt_minimal_length = 150.0 fan_full_height = 0.5 fan_speed = 100 fan_speed_max = 100 cool_min_feedrate = 10 cool_head_lift = False solid_top = True solid_bottom = True fill_overlap = 15 support_type = Grid support_angle = 60 support_fill_rate = 15 support_xy_distance = 0.7 support_z_distance = 0.15 spiralize = False brim_line_count = 20 raft_margin = 5 raft_line_spacing = 1.0 raft_base_thickness = 0.3 raft_base_linewidth = 0.7 raft_interface_thickness = 0.2 raft_interface_linewidth = 0.2 fix_horrible_union_all_type_a = True fix_horrible_union_all_type_b = False fix_horrible_use_open_bits = False fix_horrible_extensive_stitching = False plugin_config = object_center_x = -1 object_center_y = -1 [alterations] start.gcode = ;Sliced at: {day} {date} {time} ;Basic settings: Layer height: {layer_height} Walls: {wall_thickness} Fill: {fill_density} ;Print time: {print_time} ;Filament used: {filament_amount}m {filament_weight}g ;Filament cost: {filament_cost} ;M190 S{print_bed_temperature} ;Uncomment to add your own bed temperature line ;M109 S{print_temperature} ;Uncomment to add your own temperature line G21 ;metric values G90 ;absolute positioning M107 ;start with the fan off G28 X0 Y0 ;move X/Y to min endstops G28 Z0 ;move Z to min endstops G1 Z15.0 F{travel_speed} ;move the platform down 15mm G92 E0 ;zero the extruded length G1 F200 E3 ;extrude 3mm of feed stock G92 E0 ;zero the extruded length again G1 F{travel_speed} ;Put printing message on LCD screen M117 Printing... end.gcode = ;End GCode M104 S0 ;extruder heater off M140 S0 ;heated bed heater off (if you have it) G91 ;relative positioning G1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more G28 X0 Y0 ;move X/Y to min endstops, so the head is out of the way M84 ;steppers off G90 ;absolute positioning start2.gcode = ;Sliced at: {day} {date} {time} ;Basic settings: Layer height: {layer_height} Walls: {wall_thickness} Fill: {fill_density} ;Print time: {print_time} ;Filament used: {filament_amount}m {filament_weight}g ;Filament cost: {filament_cost} ;M190 S{print_bed_temperature} ;Uncomment to add your own bed temperature line ;M104 S{print_temperature} ;Uncomment to add your own temperature line ;M109 T1 S{print_temperature2} ;Uncomment to add your own temperature line ;M109 T0 S{print_temperature} ;Uncomment to add your own temperature line G21 ;metric values G90 ;absolute positioning M107 ;start with the fan off G28 X0 Y0 ;move X/Y to min endstops G28 Z0 ;move Z to min endstops G1 Z15.0 F{travel_speed} ;move the platform down 15mm T1 ;Switch to the 2nd extruder G92 E0 ;zero the extruded length G1 F200 E10 ;extrude 10mm of feed stock G92 E0 ;zero the extruded length again G1 F200 E-{retraction_dual_amount} T0 ;Switch to the first extruder G92 E0 ;zero the extruded length G1 F200 E10 ;extrude 10mm of feed stock G92 E0 ;zero the extruded length again G1 F{travel_speed} ;Put printing message on LCD screen M117 Printing... end2.gcode = ;End GCode M104 T0 S0 ;extruder heater off M104 T1 S0 ;extruder heater off M140 S0 ;heated bed heater off (if you have it) G91 ;relative positioning G1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more G28 X0 Y0 ;move X/Y to min endstops, so the head is out of the way M84 ;steppers off G90 ;absolute positioning support_start.gcode = support_end.gcode = cool_start.gcode = cool_end.gcode = replace.csv = switchextruder.gcode = ;Switch between the current extruder and the next extruder, when printing with multiple extruders. G92 E0 G1 E-36 F5000 G92 E0 T{extruder} G1 X{new_x} Y{new_y} Z{new_z} F{travel_speed} G1 E36 F5000 G92 E0

I wanted to do some speed experiments and I noticed that when I cranked up the speed in Cura, the prints still printed at the same speed. Here's an excerpt from a 10mm cube at different speeds: 150mm/s: ;LAYER:79 G0 F9000 X110.60 Y116.90 Z8.20 ;TYPE:WALL-INNER G1 F1320 X110.60 Y108.10 E437.07423 G1 X119.40 Y108.10 E437.42623 G1 X119.40 Y116.90 E437.77823 G1 X110.60 Y116.90 E438.13023 G0 F9000 X110.20 Y117.30 Here's the same cube at 30mm/s ;LAYER:79 G0 F9000 X110.60 Y116.90 Z8.20 ;TYPE:WALL-INNER G1 F1320 X110.60 Y108.10 E437.07423 G1 X119.40 Y108.10 E437.42623 G1 X119.40 Y116.90 E437.77823 G1 X110.60 Y116.90 E438.13023 G0 F9000 X110.20 Y117.30 Going down to 5mm/s it does change. (I haven't determined at what speed it stops, but I'm suspicious of 1320, or 22mm/s) ;LAYER:79 G0 F9000 X110.60 Y116.90 Z8.20 ;TYPE:WALL-INNER G1 F300 X110.60 Y108.10 E437.07423 G1 X119.40 Y108.10 E437.42623 G1 X119.40 Y116.90 E437.77823 G1 X110.60 Y116.90 E438.13023 G0 F9000 X110.20 Y117.30

I love the pause function in the new firmware, but is it possible to change the filament during the pause? I know multicolor prints are kind of a party trick, but it would also be nice to be able to change filament when you are close to running out.

Ah that's cool. I made some progress, but like you say, the hinge clearance is too big, it makes it quite wobbly. I made the hinges a bit bigger (6mm dia) and printed at 230. I started another print at 220, but got underextrusion (probably printing too fast.) Makerbot print on the right. The non-ripped apart layers look much better on the ultimaker (that might just be filament surface...) I'll implement your suggestions and see where it takes me. This is fun!

Thanks, I'm trying again with different filament, slightly bigger hinges still, and more clearance around the hinges. I'm not sure what the best distance for the separated parts, that part seems to work ok, but requires a bit of cleanup. I didn't see them take the part off the makerbot, but it looks very clean. I'm thinking about trying it printed a little colder, thinking that would help with the overhangs? Previous prints were at 240, currently printing at 230. I'll post the files up on youmagine (is that allowed?) if I get closer. Here are my current parameters for scad: // Decide whether you want the pieces to be full cubes or snub on one side snub = "yes"; // [no:Cube Pieces,yes:Snub Pieces] // Choose a side length for the cubes, in mm cube_height = 20; // Choose a stacking clearance factor, in mm (controls distance between cubes) stacking_clearance = .4;// default .3 // Choose a hinge radius, in mm hinge_radius = 3; //hinge_radius = 1.5; // Choose a hinge clearance factor, in mm (controls distance around hinge parts) hinge_clearance = .8; //.45

I went to the Makerbot store the other night (for a networking event... really) and picked up: http://www.thingiverse.com/thing:230139 which is a print in place hinged toy. So far, all my attempts to print it have failed. One thing I noticed, was the print from makerbot (replicator 2, black in photo) had bigger hinges than the default in the SCAD, so I increased the hinge size. I've tried printing slower 30mm/sec .1 layer Most of the failures are when trying to free the hinges. The only thing I haven't tried yet is printing colder, or trying other filament. Any clues?

I've started using it, but they've changed the UI so much, the tutorials that are online are pretty much useless. I think I'm missing something in terms of basic operations. (I know I'm missing something!) Simple things like rotation of parts etc, and the extrusion stuff is very different. Any one got good pointers to tutorials with the new gui?

ok, tried illuminati's extrusion test. Failed miserably. started seriously underextruding at 5mm3/sec and then eventually missed enough to miss some layers. This is at 230C. Trying again at 240. Any suggestions? http://umforum.ultimaker.com/index.php?/gallery/image/3587-extrusion-test/ (BTW, can someone tell me how to post images? when I use the icon for images it says I'm not allowed to use that in this community) btw here is the link to the test: http://umforum.ultimaker.com/index.php?/topic/3976-almost-always-missing-layers-underextruding/page-8&do=findComment&comment=33427 UDPATE: Better at 240C but still failing, briefly at 7mm3/sec, and then badly at 9mm3/sec I was unspooling by hand to make sure there was no tension. http://umforum.ultimaker.com/index.php?/gallery/image/3588-240c-back/ http://umforum.ultimaker.com/index.php?/gallery/image/3589-240c-front/

Ah thanks WoofysPlace! that makes sense now! It's all tradeoffs isn't it! I think that is the missing piece (well probably not the last) in my understanding. And to be truthful, I didn't read the whole thread! I have my homework cut out for me!

I read that thread. Really 50mm/sec is too fast? My printrbot plus can do better, and Ultimaker advertises "A well tuned Ultimaker can reach 150mm/sec." I'm not sure if there is confusion here, both prints are done at 50mm/sec, and the .1mm resolution prints are the good ones. Isn't the point of lower res, to print faster? less layers at least. and if I have to slow down a lot to print lower res, it will take a lot of that advantage away. Just trying to understand... As to temp, I'm printing ultimaker pla at 225. I'm not sure when it will start burning, but it seems like I'm getting into abs territory here!

I read the topic about spool tension, but this seems different. My prints come out fine (beautiful even!) when I print with .1 layer height, but when I print .25, they come out full of holes and extremely weak. At first I thought something happened between the time I printed the first one of these parts, and the second at lower res, but today, I printed a smaller test (next set of pics) back to back. The .1 print was fine (and took place after the crappy part in the first pic) and the .25 print was bad. https://lh4.googleusercontent.com/-hEGNXSweHRM/Uv4y1-qv6pI/AAAAAAAApIg/-qK20SrlOBo/w769-h460-no/14+-+2 https://lh4.googleusercontent.com/-xRU0ueZNtbk/Uv4y13oXcoI/AAAAAAAApIQ/hv1S3fULp8Q/w769-h460-no/14+-+1 all the other parameters (except Layer height) were the same shell thickness .8 bottom/top thickness .6 fill density 10% print speed 50 Cura version 14.01 Firmware version 14.01.2 Jan 10 2014 13:20:34

I filed an issue on github, and daid replied: Since I have command line compiling running now, I thought I'd give it a try. It does work but man, the old menus aren't as useable or nice as the new ones (and it's easy to mess up a print.) I think I'll wait until daid gets to it, unless I'm really trying to avoid important work and in the meantime, there is a workaround if I absolutely need to do pause at height.

Yeah, it turns out it doesn't really work anymore in the arduino environment without hacking up one of the builtin arduino libraries (twi.c) I've got it compiling now, but I'm not sure I've not broken i2c. I'm trying to set up the command line environment now. Maybe I can make some instructions, and it can be made sticky in the Marlin section?

Yah, Dim3nsioneer, I tried the reprap gcode, no change, and looking at the UM2 fork of marlin, the code is clearly not called. Trying to set up to build marlin now. (it doesn't build within the arduino environment, and my old toolset isn't around because I have a new computer.)

I'm a little nervous to try to fix this, but this appears to be the problem: #define ENABLE_ULTILCD2 is defined but not: //#define ULTIPANEL and the M0 and M1 code are on #ifdef ULTIPANEL I haven't looked further if there is special LCD code that has to be written for this, as I don't know if the UI is differerent for ULTIPANEL and ULTILCD2 Is it easy to rebuild the firmware (I'm a pretty techy guy)? and not brick my ultimaker2?

I hand edited the GCode to change the M0 inserted by Pause at height to M1, and the same behavior. It didn't stop. Is this the right place to file a bug? https://github.com/Ultimaker/Ultimaker2Marlin/issues

Is there a plan to make M0 work on UM2? I'm trying to do some captive bearings, but because it doesn't actually pause, I have to wait and quickly drop them in.

Doh!

That's what I have now (try two), and it's working much better.

Well, I have to say gr5, you are right. After a rather scary dis-assembly of the filament feed on my brand new UM2, I won't be using that filament again. It worked for a while but then got really really stuck. Had to disassemble the feeder, it's tricky getting the screws back in the motor. Fortunately there's a hole for the cables right under that I could use to hold up the motor with a finger. I have to say I wish this part was a little friendlier for disassembly because I can imagine this happening again, as even the best filament suppliers are sometimes variable.

hmm. I think I downloaded it right away, I re-did, and re flashed. Set up a print last night, and now can't remove the filament (the print failed about a third of the way through because the filament stopped feeding. I've tried pulling on it in change material mode, but it doesn't budge. Probably unrelated, any suggestions? UPDATE: I managed to remove the filament by disassembling the feed drive (tricky to get the screws back in....) Even though I'd successfully printed for a while, it looks like the filament was big enough to get stuck and then stripped out in such a way to not be able to be pulled out. Note that this filament wasn't cheap, but it was sold as 3mm filament in a local store (velleman label). I won't use it again (on the UM2)! I wish vendors listed the diameter, I don't see anyone advertising 2.85mm other than ultimaker, and that's really expensive to order from the states.