Building an improved Zidex

Hi Dr D Flo. I know I’ve probably annoyed you with a lot of questions, but I hope to finish my Zidex build soon. I’m building the Z axis which should be easy, but there are no instructions on your walk-through and your video does not clearly show what parts including screws, to use. I’m not sure which side is “up” for the end plates. Do I need to tap the ends of the z axis?
I admit that I made some modifications to the Zidex, but it should have superior specs to the original. Can’t wait to put it on your forum, but I’m stuck at so many steps. I bet once I complete it, I could put together an identical one 90% faster.

The end plates are symmetric and you need to either tap the hole or use a self-tapping screw. There is a guide on OpenBuilds for putting these types of actuators together: V-Slot® NEMA 17 Linear Actuator Bundle (Lead Screw) | OpenBuilds

Excited to see your build!

yes I’ve been looking at the OpenBuilds CAD site. Impressive & very helpful.
The Zidex is progressing, but OMG, the amount to learn is astronomical!!!
For example, I’ve been watching tapping videos on YouTube. Wow, there’s an entire science behind this. I’ve bought a huge tapping set (but guess what? The M5x 8mm) was missing!). Anyway, I’m sure I’ll use the other taps & dies. I also bought tap oil and a tap guide which is a metal block to guide your tap at perpendicular angles. I also bought a crimper plus its accessories for the wire ends. The t-nuts, I discovered, are of several types and the “Drop-in” ones must not be used as they may rotate inside the rail groove and fall out.
This Zidex build is very good for me as I want the knowledge & experience. By the time I finish completing it, I think I’ll have the
confidence to go to my next improved iteration of it.
At first my goal was to just learn, build, and be happy printing out a few things etc.
Now this has changed. I want to develop 3d printers.

We’ll see.
P.S. I hope you’re not upset with all the comments I left on your YouTube site.

Oh, the BOM for Zidex is missing the nuts for the M3 x 32mm Button Head Bolts. I just 99 % completed the Mini-V gantry for the motor on the X-axis with all the bearings stacks, spacers, bolts, washers, etc. … I would not wish this on my worst enemy. It literally took me over 2 hours to get this little part done … on just one side! It’s still not 100% completed as I have to order on Amazon the missing nuts mentioned above.
Also, I discovered a way to triple the number of extruders to a total of 6, all working simultaneously. After I complete this Zidex and get it configured, I’m gonna pull apart a few pieces of the frame and add in the extra 4 extruders. It should work even though there are only 10 stepper drivers with the Duet2wifi+Expansion.
So, I’m struggling bravely and winning slowly.

There’s actually only ONE nut missing per mini-gantry assembly on the x-axis. The other 3 bolts screw into the motor as you know. Nevertheless, these nuts need to be put on the Bom. To be honest, there are several things missing on the BOM.
I’m curious, how many people have built this Zidex?

Hi Dr D Flo,
OK here’s a progress report on the Zidex build.
Right now I’m waiting for parts from China via Aliexpress. I do like the Openbuilds company and I bought everything from them that you suggested on your BOM, but I need some other parts not listed on your BOM. Also, I live in Canada and unfortunately, shipping across the US/Canadian border is more expensive than via China.
My question to you is:
Do you know what computer software was used by Stephen to design Zidex? This would help me immensely as right now, I’m trying to design my iteration of Zidex in my head. Should I just use Fusion360?