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Frank Helmschrott
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The new carriage is just printing its first layers and it not only looks quite nice but moves quite nice too. I'm happy how this turned out. Didn't think that my first printed version of the new carriage would fit instantly in all terms - even with the clips for the +igus Inc. ECLM bushings.

The play of the carriage is way lower than with the ball bearings (i would never talk about zero play just because that doesn't exist g).

Here's some footage.
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19.01.17
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Just received the samples from +igus Inc. today and put them straight into my first print. Fits quite nice and feels great though they have a little bit of play. At the end its still less than I had with the LM8LUU before. It's really hard to get some good ones of these linear ball bearings.

How's the play with the bronze bushings you guys are using?

For reference: These Igus ones are Igubal ECLM-08-02. If they work well here I will probably also give them a try on the 10mm rods on the outsides.

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16.01.17
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Just wanted to share my development in terms of new Extruder Carriage for the Spider V2.

See my current design state with this public Fusion360 link: http://a360.co/2jw5CQK (It may change over time and be unusable, I will share it once I have a working "final" version.)

I decided to take some ideas from other Designs I had seen and add some stuff that came to my mind. Of course this is notably inspired by +Walter Hsiao again but I turned the fans around this time as +Matt Miller did in his design. This gives plenty of room behind the E3D and hopefully works better with cooling. Therefore I decided to step back to the stock 30mm fan at first and see how it works.

One of the biggest changes of course is the fact that the fan duct isn't a separate part now - i put everything together into one piece. The primary reason is that the bed level sensor I'm using (an IR Sensor) that needs to be mounted quite deep down to the bed and this works much better if those are not separate parts. Also this should be simpler at the end. Design was a bit challenging of course to be able to print it without tons of support.

For the linears I decided to test something new. I had a guy from Igus in my basement today and will receive some ECLM samples around in a few days (http://www.igus.com/wpck/3778/igubal_Clips_Gelenklager_ECLM). They are similar to the SDP-SI bushings and may work in this situation. They could be a cheap and easier to source alternative. I will try them on the carriage at first and if it works will probably give the 10mm ones a try on the outer ends.

The thing is already printed and test in terms of hotend fit, cable routing and all that stuff – I'm just waiting on Igus now.

Happy to hear your comments.
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As I already wrote a while ago this Kudo3D Titan 2 I had here to play around for a while is now for sale. It's on eBay in case anyone wants to jump on.

http://www.ebay.de/itm/272512750502

Note: It's not me selling this thing but a friend of mine. Please ask him via eBay if you have any questions - he's the best one to answer them.

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I'm searching for inspiration, guys. I wonder what carriages you guys are using except from the standard one. I'm missing motivation and creativity lately and already spent some hours drawing and throwing away ideas. My last design was based on the one from +Walter Hsiao which basically was great but failed at cooling the E3D in the right way. Also the mounting of my special kind of Bed Level Sensor (the small IR sensor) wasn't that good. I liked the dual blower setup for part cooling and I thought it would be worth keeping it.

If you hadn't seen the design, you can find some stuff here https://plus.google.com/+FrankHelmschrott/posts/ZCLFZ7t5qX9

Basically i need better ventilation (or better air throughput) on the back of the E3D and a better place to mount the IR sensor board. Also I will probably switch back to the graphite bushings or even to SDSPI if I can get some.

Anyways - would be happy to see your carriages if you did any special ones.

Hey everyone. Does anyone know of a good European Source to get these pushfit (self aligning) bushings that are used in the original Eustathios design? I switched to graphite bushings from Robotdigg first and am now using LM8LUU for the center (carriage) but I'm not happy with the play of the latter. I'd like to give the original ones a try as I do have to redesign my carriage anyways (still for cooling issues).

The only source I know is Lulzbot but they don't have them in there EU warehouse for quite a while now.

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I'm looking for some good linear guide rails. I plan to build a CoreXY-table for a simple laser cutter and thought I could use some Hiwin style linear rails. Guess 15-size should be enough.

Does anyone have a good source for some cost effective ones? Don't look for the cheapest but for a good price/quality balance.

Thanks!
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Hey there,

sorry if I'm totally in the wrong group for this but I thought it might worth asking you. I'm just diving into Laser cutting things. We're focussing on engraving wood and will just start with a UV diode laser. I thought there should be any plans around for a good x/y gantry probably based on corexy or Hbot without me needing to draw everything myself. I'd love to have something enclosed with a protective lid.

Does anyone know of good projects? I could draw everything myself but would also love to settle on something already done and probably put in some work there if it's open source.

Thanks!

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After seeing some E3D issues that I thought could be based on the cooling beeing not geed enough in my setup i thought before i completely redesign my carriage I will try some more "force" in cooling. The easiest way would be to change from a 40x40x10 that i used first (before seeing that even the orignal 30x03x15 isn't enough) to a 40x40x20 fan.

Here's some pics from the first test print. Looks like some decent result - i will continue to test and redesign my carriage after that. Looks like it's indeed a cooling issue.

this solution doesn't work forever of course as it steals 10mm of x and y build volume :)

This relates to: https://plus.google.com/u/0/+FrankHelmschrott/posts/gZ2ETS9h7xX?sfc=true
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10.12.16
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Cooling the +E3D-Online v6 hotend - this is something i'm struggling with for a while and only do see it on my Eusthatios (Bowden Setup) so far and even a bit worse with my new Hotend holder/carriage system. I'm attaching some CAD screenshots to clear things up.

As you can see I designed (and tested) two differen versions. One with a 40mm fan and one with the original 30mm fan. The original version seems to be better but still I do see some problems where I guess they are related to insufficient cooling: When extruding really slow (on small prints and also manually tested with 10mm per minute feedrate) i get underextrusion and then the filament that was missing suddenly comes out in big blobs.

I wonder if my design is so horribly wrong that this happens? Is the E3D really this sensitive when it comes to cooling? Are the back exhaust channels probably not big enough to get the air out?

Some data:
- 24V setup with 24V Fans
- Fans connected to a mosfet output with 255PWM softwarewise wired to Repetier Firmwares extruder cooling feature (triple checked that it runs with 255).

Any idea how I could get closer to this? If anyhow possible I would like to avoid changing the carriage as this would mean quite some work but if necessary i'd do it of course.
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04.12.16
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