Wanhao Duplicator i3 E3D Titan Extruder mount

by bliatun, published

Wanhao Duplicator i3 E3D Titan Extruder mount by bliatun Oct 29, 2016
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Autodesk Fusion 360

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This Extruder/hotend assembly is made to fit the Wanhao Duplicator i3, and other named versions of this printer.

It features an easy serviceable design, and has an effective part cooling fan with non obtrusive view to your prints.
The E3D Titan Extruder is a light weight geared extruder, combined with the E3D v6 hotend it performs superbly with almost every filament out there. I´m using the light weight Bipolar Nema 17 stepping motor part number 17HS10-0704S. It´s a perfect match for this geared extruder, even smaller pancake steppers can also be used
Animation: https://youtu.be/lNlH0MjzrrM


  • Adjustable belt tensioning
  • Easy access to filament tension screw.
  • Easy to exchange filament
  • Fully supported filament path for flexible materials
  • Effective part cooling fan
  • Easy servicing and access to the extruder
  • BLTouch mount positioning for auto bed levelling
  • Fangrill with mount points for the X-axis end stop switch and drag chain.
  • Wire mounting point

There is about 10mm of the left side of the heated bed that is out of reach with this extruder.

Maximum print size is:
200x200x180mm using AZZA´s Z Extensions to gain som Zzzz..

Update 11/11: Included STEP files


Print Settings


Wanhao Duplicator i3 V2






200 microns




  • 5 Top Solid Layers
  • 3 Bottom Solid Layers
  • 4 Outline/Perimeter Shells

How I Designed This

Modelled in Autodesk Fusion 360

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Feb 6, 2017 - Modified Feb 12, 2017

This is really cool! Any idea on screw sizes?

Fanmount: 2pcs M3x35mm
Belt tensioner: 1pcs M3x10mm & 1pcs M3x25-35mm
BLTouch: 2pcs M3x8mm (button head)
Wirechain 2pcs M3x6-8mm

Comments deleted.


Got her built. Works great! Thanks for sharing.

why does the animation show a different type of belt tensioner then that of the files the one in the files dont fit together.....

Jan 30, 2017 - Modified Jan 30, 2017
bliatun - in reply to kingkuul

It is the same, and they should fit if your printer can print somewhat accurate. Do you have a picture of parts not being the same? Last two pictures show how the tensioner is supposed to be assembled.

(Picture showing bearings is the only "old" picture of a prototype)

i guess it just looks odd then then in the animation because its looks like a block then longer rectangular shape it actual is and my printer prints are accurate the parts dont fit together the little part is slightly to large to fit in and the bigger piece is to larger to mount on the extruder mound at least the grove on the back is where i assume it goes but i dont know

Using Marlin RC7 at the moment, will upgrade to RC8 later when I get the time. If you are looking for my configuration it´s pointless because you need to use at least a BLTouch, and a RAMPS compatible board like my MKS Gen 1.4 if some of my values could be useful. If you have any specific questions to your HW I would be happy to answer you.

Do you mind posting the configuration? I have both a BLTouch and a RAMPS 1.4.

What material is this printed in?

Printed the test pieces in PLA, and have used them for several months. Have prints in PETG now but will not change before next service.

Cool, I've only printed in PLA. I like the design of this but I can't afford a Titan at the moment, so I might modify this to fit the stock setup with a V6 extruder until I can afford a Titan later on down the line.

This is a great design! What size (thickness) blower fan are you using? The ones I have seem to be to thick for the fan duct.

I´m using a Delta BFB0512HH. 50x50x15mm size blower.

Thank you for the quick reply. And if I understand it correctly (not clear in the render video) you are using zip ties to hold the bearings on through the slots I see in the render?

Comments deleted.

Is compatible with Prusa I3?

Spacing for belts is not the same, and a few other features. Take a look at the model this is remixed from for your Prusa i3.

Thank you for making this!
I bought a Titan copy from Aliexpress and it works GREAT!

I´m now getting better result at 70mm/s than I got at 40mm/s with the stock extruder.
This mod takes away approximately 200g from the wagon, thats a lot! (suing the small Nema 17)

Best upgrade I've done!

Any reason you chose to have the blower only in one direction rather than an omni or multi direction cooler like the dii cooler or one of its variants?

dii cooler (old type) has low visibility of parts being printed, and can fill up with plastic if a print fails. Can be a mess to clean up, and take out a few parts in your hot end, in extremes could be dangerous. A blower will probably have sufficient cooling at about 60% speed. this design is quite effective, cools and blows heat away from the part and heat radiating from bed. If I needed more cooling I would go for a cobra style.

Can you share your firmware config file?

Comments deleted.

Can you share your firmware config file?

Where did you find the 3D model of the extruder itself? Thanks!

Did you use det original wanhao melzi board with the BLTouch?

I´m using a MKS Gen 1.4 board with TMC2100 stepper drivers. (Cheap nice board with lots of rom to play with Marlin and it´s nice features.) Also the Melzi has poor connectors, and quite a few design flaws.

My printer pre Titan upgrade: https://www.youtube.com/watch?v=69Z7qB3VaFg

How is the adjustment screw for the belt tensioner supposed to work? I see there's holes for a bolt, but can you clarify?

The tensioner is comprised out of two parts, prints separately. A 3mm screw and nut fixes them together. As you tension this assembly, the belt is tensioned. You can see the separate parts in one of my pictures of the printed parts.

Do you put one nut or two? Inside or outside which part? Where is the head of the screw?

I made an illustration for you. Take a look at the new/last picture . (M3x30mm bolt and 1pcs M3 Nut)

Thank you, that helped a lot. I have it now assembled. Can you post a few more pictures of your assembly to show all the wire routing and drag chain? Right now it's a birds nest of wires and I don't see how the additional wires for BL Touch can fit in the OEM drag chain.

Dec 6, 2016 - Modified Dec 6, 2016

got it all printed now to get pancake stepper motor and ill get back with you on how well it works :) could have used a little more room on the bl touch mounting kinda close for the bolts and stepper motor .
i used this fan setup .http://www.thingiverse.com/thing:1571526 puts cooling fan at the front so i dont lose any bed space.

E3D Titan Extruder Fan Mount for Prusa i3

How du you setup the BLtouch to auto level?

do you have STEP files?

I have uploaded STEP files now

any chance you could design a fan mount for the volcano as well? also, thanks for such a wonderful titan/v6 mount!

How does the BLtouch attach to this?

I see the screwholes on the side of the motor mount, and the spacers, but it's not clear how it is actually attached to the mount. Are the screws threaded directly into the mount?


3mm button-head hex screws trough the part, and 3mm nuts on the BLTouch. Spacers to give the correct distance to the bed.