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Perfect Hinge (fully printed, no hardware) 40mm

by J-Max Mar 6, 2016
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This is an amazingly effective and efficient design. Thank you from the community for sharing this time saving and clean part we can all use for so many things. Do you have any other sizes converted to STL already as although I have simply scaled and printed this design repeatedly I would love to have slightly larger (60mm) with the same size holes?

Unfortunately I did not designed several sizes. Sorry. Next time a parametric model should be better...

What size screws does this use?

Good question ! You can use drywall screws, as I did on the picture above. Otherwise, the countersunk hole is diameter 4mm (1/8").

I printed the 40mm and a 30mm on a Creality CR-10 with a Cura gcode. Thanks!

Yes, I saw your prints. Both was pretty good, congratulations !

Do you know if the hinge can be embedded into another project? I have a cylinder that I want to be able to open and close with this hinge but don't want to have to attach a separate hinge. Instead, I'd like to include the hinge component into the existing exterior walls of the 2 cylinder halves. Unfortunately I can't seem to import the STL file into Onshape which is what I used for CAD.

Hi gmui,

Well, with the free version of OnShape, you should not be able to import and embed any external model into you design. Maybe it's possible with the pay version, but I realy don't know. You can desing your model on Onshape, then export a STL file, then merge together the two STL files (hinge and your model) into the (free) MeshMixer software.


Hey could you Tell me how u did it ? How Can it be versatile ?
I tried a smaller One, but ich cant move it

I made an Instructable about the whole design process : http://www.instructables.com/id/Perfect-3d-Printed-Hinge/

Is there a reason for using holes which are teardrop shaped? I am in the process of printing four of these on one build plate in order to avoid problems with cooling, which I suspect may happen if I print a single one, and have just noticed that the screw holes are not round. Can you provide a round hole version?
Print looking good on my RepRap Mendel90 at the moment :-) Will post a "made one" if all turns out well.


Hi Alan,

If you have a part cooling fan or use ABS with no fan, there's no cooling issue. I usually print that hinges one at a time.

About the teardrop holes, they're made at purpose to avoid bridge trickleing on top of the holes, it's a nice 3D printing trick. No problem about that. The holes still constrain 75% of the screws which are perfectly hold in place.

Actually that hinge is the most downloaded and built of my designs. No issue were reported yet. I printed about 20+ hinges on different printers with same success. The Mendel90 is a pretty good printer, I'm confident everything gonna be all right.

I wish it will suit your needs. Regards.


Great single piece hinge design, really nicely done.

Thank you for your comment. I'm glad this is usefull to you ;)

question, I use Cura for 3d printing. Could you tell me where to change the resolution? You wrote: At last 0.5mm with 0.2mm layers, or thinner. No where in Cura is there the word Resolution so it must be a different term. thanks for any help.


Resolution comes from your nozzle output diameter. It's a hardware measurement. I mean your nozzle must have a hole of 0.5mm maximum (it could be smaller : 0.4mm ; 0.3mm ; etc.), and you should print 0,2mm layers or thinner ones. That's what I recommand, but maybe the hinge will be ok with different hardware/settings. Give it a try and let us know ;)


How did you design this? Any chance there's an OpenSCAD file?

Hi Tom !
Unfortunately, I'm not an OpenSCAD user...
To make it strong, I choosed to use a variable shaft diameter.
I explain the whole design process in this instructable : http://www.instructables.com/id/Perfect-3d-Printed-Hinge/
You'll be able to make your own if you like. ;)