Flexy Shaft holder for MENDEL

by BogdanKecman, published

Flexy Shaft holder for MENDEL by BogdanKecman Feb 14, 2010
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BSD License
Flexy Shaft holder for MENDEL by BogdanKecman is licensed under the BSD License license.

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Simple holder for flexy shaft (I use the Einhell flexy shaft but Dremel one should work too - the inner dia of the hole is 21mm). It can hold a marker or a pen too.


  • print
  • put M3 nuts in a slot
  • put M3 screws in a holes
  • put the flexy shaft in the big hole
  • tighten the shaft with screws
  • mount everything on mendel tool carriage using 2 M4 screws

Note that object is printed upside down.

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Hi Arhimed

I have a Prusa, what needs to change to make this fit and do you have any source files, e.g. OpenScad / SketchUp files for the original design so I can edit it?


Unfortunately the stl is the only file I have, the project was made long ago, if I remember correctly it was designed using Art of Illusion + netfabb.

Wrt prusa mendel, I seen more then 20 different versions of the x-carriage Josef made, I really have no clue which one is final, nor I really follow any of existing mendel designs (I'm not really a fan of mendel architecture, I'm more for darwin base design when fdm printing is involved)

How is this part supposed to be mounted onto the carriage? The portion of the mount that stick up when printed is too wide to fit between the bolts inside the carriage that come up at an angle.

Also, I printed this part for a Dremel Flex Shaft, and it did not work sadly. Maybe a revision is in order. :)

What carriage are you using? As you can see on the picture, it fits perfectly the original xcarriage for original mendel. If you are maybe trying to fit it on prusa mendel or some other "stripped down" version then it depends on your version.

If you look at the third image (the STL representation) you actually turn the object upside down, and what is on top in this picture you need to put into the x-carriage, and what is on the picture aligned with the bed is the top of object when you use it. The two holes on the side fit original mou
nt point on mendel perfectly and the piece that go inside the carriage miss all screws that hold the bearings.

If you are using original x-carriage, then the only reason I can think of is that you are using too long bolts for bearings hold... Maybe if you can put a picture describing your problem.
I printed 2 of these and attached to 2 different mendels, I know 2 other persons who use it "as is" for a while now and I know about some other things that add on to this object (but the mounting part stays the same) ...

I hope this helped

Yeah bolts are too long, but even without the long bolts, it looks like the part would still hit the bearing. I am on a standard Sells Mendel. It could be my scale is slightly off on Skeinforge.

You can see in the picture attached that the bolts stick out normally. Those bolts sticking up are the ones getting in the way.

wow, I forgot about this part completely :D ppl still use it :)

Hi CidVilas,

I am not sure what bolts prevent you from pushing the holder into carriage. The part on the picture is the bottom part of the X-Carriage. If you look at my first picture you will see that I am using bolts that are exiting nylock nuts by maybe only 1mm (on the pro-engineer picture you
posted they exit nylock nuts by more then 1cm). Maybe that is the difference.

Looking at this design (I don't use my Mendels any more so don't have any X-Carriage near me now) on a picture I assume only one of two inner screws is the problem - right? Looking at pic you attached - it is left one o
n the left view, what you can do is turn the bolt around, so that head of the bolt is on top of the bearing and that nut comes below the X-Carriage. This way you will have it short enough to clear the assembly (this and any other). Other solution is to use shorter bolts. I do suggest shorter bolts (
for all bolts on the X-Carriage) because this is not the only part you will have problem with - there are other holders, hot ends and other parts that will not fit properly if those bolts are too long. If you don't have a shop near by you can always cut bolts with dremel disk - not you must take t
he bolts out - do not cut them while they are inside the abs/pla X-Carriage as they will get hot and PLA/ABS cannot take that (they will move out of position as PLA/ABS will melt)


look here: http://www.thingiverse.com/thing:3526http://www.thingiverse.com/thi... they also use this mount to connect their pen to the mendel

Mendel Pen Spring Mount
by johnnyr