ultimate-x
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Posts posted by ultimate-x
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Hi Daid
Don't use grease on the rods! You risk to get high resistance on the rods if there is only a little dust.
I clean the rods about every 20 hours and add only a few drops of high quality silicon oil. Like that it runs as smooth as possible.
Only the lead-screw needs a little grease.
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Appreciate that
Thank You
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Hi Daid
Just a quick question: In the readme the support of a 16x2 LCd is mentioned.
Does this mean your branch supports the Deuligne Interface of Snootlab?
Thanks in advance
Michael
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Hi Gasgano
I'm printing quite a lot of big parts to build remote controlled aircrafts.
See post:
http://forum.ultimaker.com/viewtopic.php?f=19&t=297#p1588
High Temperature increases the wrapping (bending) mainly if there are big differences in the structure width of the things you print.
It's just the usual engineering problem of plastic casting. Every unevenness in wall thickness causes differences in cooling rate which results in internal stress which causes the wrapping.
For example:
- A cylinder with no infill will have no wrap, because the wall thickness is constant.
- A cube with no infill, the edges will tend to wrap in z-direction because there is more mass in the corners
- A rhombic footprint (As my SR71 fuselage segments) has a huge mass in the sharp corners. They wrap quite a lot
- Infill causes the whole structure to wrap because the ribs cool down faster then the thick walls.
A heated build platform may solve the problem for not too high parts but when using the whole 200mm there is a risk the stress in the layers gets high enough that the print just breaks apart.
After quite some experimenting with different temperatures and settings I found the premium PLA 45 type from Orbi-tech in Germany.
This PLa has the least wrap of all materials I tested. I print it with 240°C at 100mm/sec with no problems (120 hours the last two weeks)
It's a bit more expensive but if you use double the material because you have to throw the prints away, it's always worth the money.
Michael
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Hi Tom
Now printing with the alx's branch for about 120 hours without problems (expect for the florescence lamp's EMV issue). There is no need to use the erik zalm marlin branch.
Posed the same question to me, too. It would be nice to know if the whole improvements erik did will be available for the Deuligne interface.
Hope we get the answer in that post.
Michael
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Thanks for the link
It's quite useful info
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As we know, Surface finishing with solvents works pretty well with ABS
PLA is another case.
What's your experience with surface finishing of PLA prints
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Just out of interest
What's your experience with gluing PLA parts.
Which glues work and which don't
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I saw that post on the neon light... I am assuming he means florescent. I did try his batter light idea... same results. Might be my house power though. I have burnt up 3 routers in the 5 years before I put in a UPS on the power supply. Might be time to get one for the printer.
You're right. There are different translations for these lights
But your description of the Layershifts just at the instance you are checking on the print is quite a hint in the direction of that sort.Because this discussion is off topic I suppose to start a new thread in the troubleshooting section.
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nice stuff... wish I could print big... having issues with long print jobs skipping.
Chuck
I would strongly recommend to us a SD-Card like the one from Snootlab to get an stand alone printer.
http://forum.ultimaker.com/viewtopic.php?f=6&t=43
http://wiki.ultimaker.com/Deuligne_LCD_interface
http://shop.snootlab.com/lang-en/snootlab-shields/140-lcd-kit-for-ultimaker.html
It's worth every cent. Since I use it, no aborted prints any more. Start a print in the evening, get the part in the morning.
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They are excellent looking prints.
Thanks, I'm quite happy with them
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Hi Harry
Well as always, forgot to follow all links in Your tread. Sorry about that.
I printed this Yoda some weeks ago to test the 0.04mm netfabb high quality setting and it looks amazing.
Unfortunately I gave the print away so I can't do some photographs. This level of detail is absolutely achievable with a well calibrated extrusion rate and some fine tuning of the temperature.
What I meant with the rounded corners in xy direction you may see in the detail picture of the Yoda. Inside corners are printed sharp and nice. But outside corners are all rounded by half of the filament width. I did a print of this bust scaled down to half the size (About 15mm height). Then some details around the eyes and the ears were missing, the outlines blending into each other.
There are some experiments wit thinner nozzles with 0.15 and 0.2mm bore but it's harder to get constant extrusion out of these thin nozzles.
So if you want to do builds like this Yoda bust, the Ultimaker is a valuable candidate.
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As mentioned above, it needs some technical skills to build this printer. But the kit is quite well engineered and you can't do too much wrong.
I think one of the biggest advantages is its fast evolution in the open source community. Therefore the development goes on and will increase.
It took me just five calibration prints until the 0.04mm layer height worked. If you have patience you'll be able to get the same results.
For your application at a scale of 25 to 50mm You have to be aware, that there is always the visibility of the layer and the geometric resolution is limited by the process itself.
The minimal xy resolution for details is about 0.3mm everything below that will be smoothed by the tip of the print head. The layers are built with a plastic string which always forms an outline with rounded corners of about 0.15mm radius.
Maybe post a picture of what you like to print.
Michael
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Just for the ones interested to follow the build of my SR71:
http://www.rcgroups.com/forums/showthread.php?t=1588486
Please post in rcgroups regarding the project, so this thread does not go off topic.
Michael
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By the way, the magenta material I bought from the ultimaker shop. Works pretty good, but it has far too much wrap. The edges of the bottom plane curled up about 5mm.
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No I haven't tried the Premium 90 grade from Orbitech. But from the good performance of their Premium 45 grade I think it's worth a try.
I looked for a real low wrab solution and the PLA 45 is really good. The prints are really dense, like solid material. I run with 230°C at 100mm/sec. I run this material now for about 120 hours almost nonstop for my remote control aircraft project, making the primary molds to laminate carbon fibre.
There is no wrap in this material, all the segments fit together like CNC milled.
I will need some time to get it done then I will post it in thingiverse and on RCgroups
Michael
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Tried the pypy and the result looks really good. I will need some calibration for my modified extruder but that's no big deal.
It's fast and the results I think the results will be quite good.
Thanks for the support
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Thank you for the tip
I'll try this Week end
Michael
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For the comb and skirt feature I like to switch to skeinforge
In the gcode, the freshly installed skeinforge 46 cerates no commands for the extruder axis in the G1 lines.
Where is the setting to generate the G1 like: G1 X0.9404 Y0.9425 Z0.1600 F1500.0000 E0.0000?
Thanks for your help
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Maybe this could help some Ultimaker Users
I use my Ultimaker in my hobby room which is lighted with neon lamps. Often I got Layer shifts just after I've checked on the ongoing print for its progress.
After some testing it's prooved, that switching the neon lights my cause layer shifts in the print. I discused that matter with the electo engineers in my department and they told me that the starters of neon lights may cause some severe EMV impacts on electronics.
Since then I only use battery lights to check on the active prints. No layer shifts any more.
Hope this is helpful for other users
Michael
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I use the PLA 45 filament from Orbi Tech
http://www.orbi-tech.de/shop/Kunststoff-Schweissdraht/PLA:::30_46.html
I tried many, but this type has no wrap at all, even if you use the whole platform.
They sell 2.2kg spools either, but you have to mail them.
The PLA 45 is not as stiff as others but that prevents extruder jams either.
Happy printing
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Thanks for the very well working solution
With all initialization code in the gcode i'm now able to start the prints without any preparation.
I like it a lot
But your description of the Layershifts just at the instance you are checking on the print is quite a hint in the direction of that sort.
Re-greasing?
in Coffee corner
Posted
In my experience it's best to clean the rods once with alcohol. Don't let them run completely dry. Use just some drops of high quality silicone oil. I got my oil in a rc hobby shop.