D3D Extruder

Tech Tree of Choices

This is what choices went into each version of the extruder. We go from Tech tree of choices -> Industry Standards -> Technology Assessment -> Value Proposition

• These are all the different ways to implement an extruder for a 3D printer.

• Hit Ctrl-mouse scroll to zoom in

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Links

• D3D

D3D Extruder Primary Versions

Presently, the D3D extruder project has experienced a few primary versions. These versions have a few replications and changes within them. Currently, the Modified Pruas I3 MK2 version is being tested and evaluated and is considered the prime version.

Modified Prusa i3 MK2

Hint: D3D second version - Prusa i3 MK2 Original - OSE Adapted - Extruder - 7/18 current version - File:Prusa i3 mk2 extruder adapted.fcstd

MK8

• D3D first version - MK8 extruder -

File:D3D Extruder.fcstd

Replications

Here are details of replications of the D3D extruder by version. General notes on the build can live here, but fine details are on replication wiki pages.

MK8

• Here is GrabCAD - [1]. And another -[2]

Prusa i3 MK2

Prusa i3 MK2 with Volcano Nozzle

• D3D Extruder v1708
• Designs are available for a Volcano nozzle retrofit - https://www.thingiverse.com/thing:2117460 (note: cover of extruder is missing holes, update needed)
• full vetting is cataloged on facebook presently.

Prusa i3 MK2 Stock Nozzle D3D ohio

• D3D Extruder v1807
• Made from D3D Ohio [D3D_Ohio_v18.02] 12" PVC varient of the D3D
• uses stock nozzel of E3D V6 J-head Direct Hotend which is 1.75mm
• See D3D_v18.07,D3D_Ohio_v18.02 (pending) for the printer this was used in.

2018-06 Notes

These were noted by User:Maltfield when he attempted to build the D3D extruder from the part files on this wiki in 2018-06.

1. There is a hole missing in extruder body which should receive the bolt for mounting motor
   
2. Some of the bolts appear that they're supposed to be nut-less, simply catching on the 3d printed plastic. this is a bad design that doesn't work in practice. The places where there's a slot for dropping a nut catcher in perpendicular to the bolt work great, and that design should be replicated for all bolts.

CAM (3D Print Files of Modified Prisa i3 MK2)

3d printable parts extracted to stl for the 8 mm height sensor with lowered sensor holder:

• New modified body with proper nut catcher, lowered sensor holder for 8 mm sensor -File:Extruder mod 8mm.stl
• File:Prusa i3 mk2 extruder adapted cover.stl
• File:Prusa i3 mk2 extruder adapted idler.stl
• File:Prusa i3 mk2 extruder adapted fanNozzle.stl
• File:Prusa i3 mk2 extruder adapted bearingShaft.stl
• Just the interface plate - File:Prusa i3 mk2 extruder adapted interface.fcstd - File:Prusa i3 mk2 extruder adapted interface.stl

Lay the parts like this for packing fraction and proper overhang considerations:

BOM

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CAD File Downloads

Simple Extruder Holder

• FreeCAD -File:Motor interface.fcstd. I used M4 nuts for the nut catcher, but for the screws I used added the https://www.mcmaster.com/#90116a217/=14gcc4s that are already in the universal axis, in order to avoid adding a new item to the BOM
• STL - File:Motor interface.stl

Development Document

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Exploded Part Diagram

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Part Files

3D Printed

• Extruder Idler - File:Idler.stl - File:Idler.fcstd
• Extruder carriage side - File:Carriage side.stl - File:Carriage side.fcstd
• Extruder motor side - File:Motor size.stl File:Motor side.fcstd

Other Parts

• Stepped motor - File:Nema17.stl - File:Nema17.fcstd
• Pulley - File:Pulley.fcstd - File:Pulley.stl
• 8mm bearing - File:8mm bearing.stl - File:8mm bearing.fcstd
• E3D V6 - File:E3Dv6.stl - File:E3Dv6.fcstd

Technical Notes

• See build manual for the i3 MK2 extruder from Prusa Research (which is discontinued) - [3]
• Note that the extruder uses a Universal v6 heat sink ([4] - good for Bowden and Direct) - which has a Teflon liner up to the cold part of the heat break