Extruder number 1

Until I ahve my new PSU, I decided to assemble my Bowden Airstripper extruder ; I’ve chosen to replace the diesel hose by springs (After different trials of some types of spring, I finally decided to cut some loops in order to fit a correct length – the stiffness topic will be treated afterward).


In a first step, I noticed that the motor axis has no flat surface; a file plus a little bit of elbow grease and the business is done (all that fuss to save one machining step  😕 ) :

extruder_flat_surface1 extruder_flat_surface2

Motor axis with its new flat surface
view 1

Motor axis with its new flat surface
view 2


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Start of the winring and the electronic steps -> end

A) RAMP 1.4 assembly

“Wiring” and “Electronic” steps can be started now with the RAMP assembly (see photograph), plus different tests and set up’s including the stepper motors and their pololu (that’s the reason why the motors have not been assembled yet), the PSU and so on …



Ramps assembly


I recycle heatsinks from an old web device to mount it on the Mosfet’s; the space is quite limited and I’ll have to manually make some heatsink modifications to adapt them; As well I plan a cooling fan to blow on the electronic cards. I recall that the electronic components will be placed on the upper board of the Delta 3D printer and not in a confined space.


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CAD changes

Based on these first mechanical feedbacks, I would have to make some changes in the CAD (or completely to remake it).


As a reminder, the original CAD’s were realized under Pro-Engineer/creo CAD modeler (moreover I’ve been using it in a professional context), with a temporary 30 days license (that expired for a while); for a private use only (neither upward nor downward commercial relationships) and turned to the sharing of the native files, I’ve several options:   

  1. I (re)contact PTC comp to negotiate a longer license, but still the in previous well defined and bracketed context,
  2. I move towards a proprietary solution but free for this kind of use: Sketchup and DesignSpark Mechanical for example,
  3. I use a 100% OpenSource solution such as FreeCAD or OpenSCAD for example


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Assembly start (mechanical parts)

A) The printed part

Few days ago I received the 3D printed parts from DeuxVis (in ABS material and PLA one); one of the first things I did is the boring of all the functional holes, especially the ones of the carriages and the platform (ditto the structural upper parts and lower parts maintaining the stub bars)

With 3.01 mm and 5.01 mm tapping tools (borrowed at work), wax for lubrication, and a lot of “elbow grease” allowed end rod axis being put in place with no gap 😀 (see pictures bellow – washers  and nuts have not been set up yet):

plateform carriages

Plateform (ABS)

Carriages (PLA)


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Bill of materials

In the tables hereafter,  a detailed list of the parts intended to the realization of a Delta 3D printer; there are a compiling of information’s I found, advices people gave me, modifications I made, and so on …


Warning:  As the printer design I made, this list is mine and it reflects my own choices ; the purpose is to share my DYI experience, but in no way I do not want to push anybody to follow my examples, the products, the links, the providers and so one. As I am, the reader remains responsible to its own decisions regarding the choice of its components !!!!!



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At the beginning was a Delta project

This part will deal specifically with experiments on 3D printing:

  • building of a reprap print: delta one derivate from the Johann Rocholl‘s Rostock printer,
  • set-up and calibration steps
  • other dormant projects, related to 3D printing
  • miscellaneous …


In a spirit of “sharing” with the community, CAD files (native ones and STEP ones), PDF3D files, drawings will be uploaded and downloadable in this website.



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