Here we go again . . . MK4

**routercnc** · 20-06-2019

I'm not sure if I'm honest. To drive 4 ballnuts without pre-load would be fine I think, but when the ballnuts are clamped together there is an extra load to overcome, and the Y/Z is pretty heavy. Is it worth the risk to have missed steps on a critical job? Not sure.
Decided to leave it like that and put some pre-load between the front and back ballscrews instead.

Sending pm shortly . . .

**routercnc** · 22-06-2019

Hi Lee, pm sent . . .

**routercnc** · 30-08-2019

For anyone interested here is episode 26 of the CNC series giving an overview of my humble but functional CNC controller.

Also, for anyone who likes oscilloscopes there is a review of the Hantek DSO5102P oscilloscope supplied by Banggood.

Then right at the end of the video is a short montage of the controller build.

**routercnc** · 27-03-2022

If you see this Lee PM sent . . .

**routercnc** · 02-05-2022

I've had many requests for the CAD of this machine. I've also had requests for narration so I decided to put together a 3 part mini series to show a shorter version of the build for new viewers and also explain how the CAD can be downloaded for free (explained at the end of part 3). If you have seen the original 27 episodes of this build there is no new material, but the narration may help with explaining how I approached it.

Here is part 1 of 3: