Thanks for downloading!
We'd love to hear from you if the print was successful.
Saintflint Extruder
Not your mother's extruder! Kidding... This simple yet very effective extruder is the brainchild of some members of the QR's community (Shauki, Exilaus & Dale Dunn). I just tried to put it in a pleasant form. The name comes from the ring that looks like an aureola and it uses a coil from a lighter.
3D printer parts and enhancements
Creative Commons Attribution Share Alike
Commercial use is allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.
Description
This is an original design of an extruder that has the following features:
- Symmetrical load on stepper axis;
- Adjustable filament pressure without spring;
- Simple & open design (easy to see what's happening inside);
- No need for a geared reducer, direct drive;
- Support flexible filament (anti-buckling support on both extrusion and retraction);
- Best bang for your buck;
See it in action:
*
Files for modification are publicly available and with a free Onshape account here:
* https://goo.gl/ESpfDw
For details about fitting the coil on the stepper motor, you can find them by looking for #bicgear , #saintflint or #flintfeeder on Google Plus.
05-09-2015 Uploaded some variation on the current design, namely:
- MK8 gear based version
- NEMA14 based version (uses smaller 625 bearings). This last version should perform very well as a "suspended" extruder on a delta with a short bowden. Very light yet powerful enough to get along with the speed.
Materials and methods
- 1 Coil flint from a BIC or Mini-BIC lighter;
- 4 Shims w/ inner diameter > 5 mm (I used rolls from a used bicycle chain;
- 1 screw M3 5 mm length
OR
- MK8
=================================
- PTFE liner 40 cm;
- 2 608 bearings;
- 2 screws M3 20 mm length;
- 3 M4 nuts to secure the PTFE line (2 for the loop and 1 for the start of the bowden line to the hot-end);
- 1 Step motor NEMA 1.7A (or even lower);
Documents
Edit in 3dslash
Issues
Issues are used to track todos, bugs or requests. To get started, you could create an issue.
Comments
AngelaBinson added this to the HY collection ago
SheriGreen added this to the ddd collection ago
GilkeySimon added this to the hy collection ago
LucasMoore added this to the dsedweddc collection ago
HenryTOtto added this to the A collection ago
Emerson Jhones added this to the extruders collection ago
JessieTMitchell added this to the a collection ago
Lucas Brígida added this to the Make collection ago
Alexandre Parra Betioli added this to the Printers collection ago
Sabin Iacob commented agoI added a mk11 version (luckily onshape is similar enough with freecad for me to find my way around it; cringy service otherwise, asking for phone numbers and stuff...)
Sergey Mukhortov added this to the M-prime collection ago
mongrelfab added this to the filament collection ago
Sean B added this to the Functional Prints collection ago
Lisca added this to the 3D Printer Parts collection ago
Paulo Rodrigues added this to the 3D Printer Extruders collection ago
Saverio Palmieri Neto added this to the Things to print collection ago
SphereCo added this to the Printer_Parts collection ago
ckaos commented agoThanks a lot , will take it for a spin :)
Erich HaHaOh commented agoThanks for your help Michael !
mmemetea commented agoI meant mk8, not mk7... Sorry.
mmemetea commented agoI just uploaded an MK7 version. It should work, please confirm as I don't have any.
The only trouble you could run into would be due to some contact between the non-hobbed part and the conical part. Let me know if it's ok.
You should reach 150 mm/s without problem (my printer isn't rigid enough to reach this speed in a usable way but I will try for the sake of it).
Erich HaHaOh commented agoIs your Extruder usable for MK7/8 Gears?Not the lighter Gears from Shauki)
Great Invention! Thanks for sharing!
ckaos commented agoVery nice design !
Two small questions:
- what is the maximum speed you tried it on ? (looking for something that can possible manage 100-150mm/s without too much trouble)
- can you also use something other than a flint, ie an MK8 etc ?
mmemetea commented agoPrinting speed usually 70 mm/s - Retraction 3 mm @ 40 m/s - Works flawlessly for far.
The tricky part is really to install the flint correctly.
rsenas commented agoGreat!!! What speed settings? Retraction and had never seen such a brilliant idea and a motor pulls it right? And again thank you for providing. Big hug.
sniglet printed this ago
- Printed on:
- IGentUS
- Result:
- Excellent
mmemetea published this design ago