Mendel90 Tweaks and Enhancements

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It would be great to know what tweaks and enhancements you guys have made to your Mendel90 machines.

I've made some fairly minor changes, such as using an aluminium build plate (which works great and removes the need for clips) and a mirrored Greg Wade extruder that I still need to put up on Thingiverse. Are there any changes that you guys would suggest to other Mendel90 owners?

I would like to see adjustable Z-stop for Mendel90. Rather than changing the firmware for Z_HOME_POS, I have seen other printer mods with an adjustment screw on the z-stop.


Anet A8 Z-Endswitch

Here is my adjustable Z top for Mendel90:

Mendel90 Z Manual Adjust

Perfect. Thank you.

I added 4mm pitch acme rods instead of the threaded rod for the z-axis, that gave me a big improvement in reducing z wobble (could be because my threaded rods weren't super straight). I also did some mods because I simply did not have the original materials required. I added a silicon heater bed running on 240V (huge improvement in warmup time) still print on glass though but the glass sits on top of the aluminum.
Made a custom filament spool holder with a version/option for a fully enclosed spool (mostly for keeping nylon dry) here is a video https://www.youtube.com/watch?v=aikRKSMdc_w
link to thread holder https://www.thingiverse.com/thing:2313124 endstop adapter https://www.thingiverse.com/thing:1879103 z bar holder https://www.thingiverse.com/thing:2494118

Thread holder for mendel 90
Endstop adapter
Mendel90 Z bar holder with bearing

Since Nophead have included a direct drive extruder there are not many enhancements that make much sense, only a few:

http://www.thingiverse.com/thing:287497 - But if you print ABS you will not need an extruder fan at all
http://www.thingiverse.com/thing:755654 + http://www.thingiverse.com/thing:744868 - Usefull if you do print ABS
http://www.thingiverse.com/thing:23907 - You don't need auto level if bed is level

Mendel90 x_carriage_fan_bracket with guard
by acon
Mendel90 housing - enclosure
Mendel90 Dibond rear housing
X Carriage Dial Gauge Mount
by nophead

I recently made such a direct extruder, is now in the test. It works not bad.
Can you show photo your aluminium build plate? Maybe in a future i made this too.

Direct drive extruder for carriage mendel90 and E3D hotend.
by Jilativ

The aluminium build plate is great at conducting and distributing the heat. It is also useful if you want to use an inductive sensor and automatic bed tramming/levelling (see: https://www.youtube.com/watch?v=EcGFLwj0pnA) Unfortunately I don't know how to upload a picture using these forums. It doesn't look like they've provided a way of embedding images in posts.

I basically bought a 3mm aluminium plate with the correct dimensions, drilled holes and countersunk screws into the corners where the hex pillars are. It has the added advantage of getting rid of the clips which I found got in the way sometimes.