Bowden tube coming out of extruder

is that any pneumatic fitting or specific?

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iamburny
Here is a version of MasonStoneHenges Spring loaded extruder arm, modified to take a pneumatic bowden connector

masonstonehenge original
[www.thingiverse.com]

My Modded version
[www.thingiverse.com]

[attachment 54501 DSC_0001s.jpg]

The tongue that clips onto the X arn us 3mm short so it doesnt hold onto the arm atleast for me

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Darathy
The tongue that clips onto the X arn us 3mm short so it doesnt hold onto the arm atleast for me

The Ormerod 2 uses a longer tongue than the Ormerod 1.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

DOH! , is there a ormerod 2 version?

Edited 2 time(s). Last edit at 05/13/2015 05:19PM by Darathy.

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Darathy
DOH! , is there a ormerod 2 version?

You could print and ad Thorsen's Extruder vs gravity defender :-)

[www.thingiverse.com]

Erik

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ormerod168

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Darathy
DOH! , is there a ormerod 2 version?

You could print and ad Thorsen's Extruder vs gravity defender :-)
[www.thingiverse.com]
Erik

How would that help with the bowden tube problem?

Dave

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dmould

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ormerod168

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Darathy
DOH! , is there a ormerod 2 version?

You could print and ad Thorsen's Extruder vs gravity defender :-)
[www.thingiverse.com]
Erik

How would that help with the bowden tube problem?

Dave

The extruders main body's shepherds crook is not long enough to fit in the lower slot on the X-rib on the Ormerod2 that secures the extruder, Thorsens ad-on will do that and make it possible to use the extruder with the bowden tube adapter anyway

Erik

Quote
iamburny
Here is a version of MasonStoneHenges Spring loaded extruder arm, modified to take a pneumatic bowden connector

Is this version for a M5 nut?
I am afraid that this problem effects me too but I need to know which pneumatic connector I have to buy.

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Treito

Quote
iamburny
Here is a version of MasonStoneHenges Spring loaded extruder arm, modified to take a pneumatic bowden connector

Is this version for a M5 nut?
I am afraid that this problem effects me too but I need to know which pneumatic connector I have to buy.

Until I get around to posting on Thingiverse, this is the M5 version with the larger feed diameter, pneumatic screw fit and the PTFE pipe through the feed path to the hobbed insert.
[dl.dropboxusercontent.com]

Once I post it on Thingiverse I'll remove this link

Please note that the pneumatic connectors lose their grip after you have removed and replaced the Bowden tube several times. So get plenty of spare connectors, and only remove the Bowden tube from the connector when you have to.

---

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Quote
dc42
Please note that the pneumatic connectors lose their grip after you have removed and replaced the Bowden tube several times. So get plenty of spare connectors, and only remove the Bowden tube from the connector when you have to.

That's pretty much the reason we don't use them. We did have them on the original Huxley printer (over 4 years ago...) but found they eventually pop out, too! Which is why we went for a cheaper solution, that is generally more reliable. PTFE is just rather slippery...

Ian
RepRapPro tech support

Its no biggie, drill, tap and arrest it with a screw



Erik

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droftarts

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dc42
Please note that the pneumatic connectors lose their grip after you have removed and replaced the Bowden tube several times. So get plenty of spare connectors, and only remove the Bowden tube from the connector when you have to.

That's pretty much the reason we don't use them. We did have them on the original Huxley printer (over 4 years ago...) but found they eventually pop out, too! Which is why we went for a cheaper solution, that is generally more reliable. PTFE is just rather slippery...

Ian
RepRapPro tech support

I have ordered only two for now because I finished the ordering yesterday. I only had this problem two times for now, so I am not sure if I should exchange the tube connection or not. Maybe there is one possibility for another fixing. Next week I will try to think about it. Maybe I will have an idea. Maybe there is a possibility to increase the outer diameter of the brass connection part and place the clip over the brass. That would be my first brainstorming idea for now after 10 seconds of thinking. But next week I will not have to work and I will stay at home so I have much more time.

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VortyZA

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Treito

Quote
iamburny
Here is a version of MasonStoneHenges Spring loaded extruder arm, modified to take a pneumatic bowden connector

Is this version for a M5 nut?
I am afraid that this problem effects me too but I need to know which pneumatic connector I have to buy.

Until I get around to posting on Thingiverse, this is the M5 version with the larger feed diameter, pneumatic screw fit and the PTFE pipe through the feed path to the hobbed insert.
[dl.dropboxusercontent.com]

Once I post it on Thingiverse I'll remove this link

Would you make 1 for the Ormerod 2 aswell please? i would really like to have 1 aswell

Quote
droftarts

Quote
dc42
Please note that the pneumatic connectors lose their grip after you have removed and replaced the Bowden tube several times. So get plenty of spare connectors, and only remove the Bowden tube from the connector when you have to.

That's pretty much the reason we don't use them. We did have them on the original Huxley printer (over 4 years ago...) but found they eventually pop out, too! Which is why we went for a cheaper solution, that is generally more reliable. PTFE is just rather slippery...

Ian
RepRapPro tech support

I still cannot really imagine that this is the case. We use them at work and we as far as I know we do not have any problems with them. Okay to be honest we are using OD8 not OD4. But is this generally the cause that they are loosing grip or depends this on the manufacturer?
I am not able to test the connector at the moment I am not able to print this *** extruder. First I had trouble with ABS warping, now shrinking? The filament does not find its way through the Feeder and gets stuck

I spoke at work with our staff member which is mostly in contact with these connectors. We do not have any problems but we are definitely using only OD 8 or sometimes taller. Do you used cheap variants or do you use connectors from a big company? I think this weekend I will replace my Extruder. It is really urgent.

Is there anywhere the modified version available with the bigger radius so the filament would be less bent?

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Slicer: Simplify3D 4.0; sometimes CraftWare 1.14 or Cura 2.7
Delta with Duet-WiFi, FW: 1.20.1RC2; mini-sensor board by dc42 for auto-leveling
Ormerod common modifications: Mini-sensor board by dc42, aluminum X-arm, 0.4 mm nozzle E3D like, 2nd fan, Z stepper nut M5 x 15, Herringbone gears, Z-axis bearing at top, spring loaded extruder with pneumatic fitting, Y belt axis tensioner
Ormerod 2: FW: 1.19-dc42 on Duet-WiFi. own build, modifications: GT2-belts, silicone heat-bed, different motors and so on. Printed parts: bed support, (PSU holder) and Y-feet.
Ormerod 1: FW: 1.15c-dc42 on 1k Duet-Board. Modifications: Aluminium bed-support, (nearly) all parts reprinted in PLA/ ABS, and so on.

You now, thoughts pneumatic push in clams restrict the PTFE where that clamp down on the Tubing (Friction). For the ormerod Extrude-rs i use this (See Attach). I have included the Drawing files as it should fit snug in the Extruder housing. For this resin all own you may need to Sand a bit off the end that go's into the housing. I use weld - on to glue to gather. There is no shame in making parts that need gluing, especially if it gives you a Better finish ie .. part.

Settings to try:
100% infill
18mms print speed

I recommend cura to slice. Note - Note the new one that is specific to Ultimaker. Unless you have and Ultimaker printer. The others seam to lose the fine details. if your printer will print the fine details.

Have fun

I had this problem when I wasn't able to find brass unions anywhere. You can carefully thread an M4 nut onto the PTFE tube. Do that for about 10mm or so, then unscrew the nut. Pop the nut into the tongue slot, then thread the tube back onto the nut while it's in the hole. It can be a bit finicky, so use a flat screwdriver to hold the nut in place while you thread it on. I wrote a post on it here: [forums.reprap.org]