I seem to have solved my problem, I have run three jobs which have completed perfectly. However, there was no single thing I can ascribe this to, and I have a strong suspicion it’s a confluence of two issues.
- I physically separated all cables so none were close and none were co-linear
- I removed all my earthing cables (these made things worse, possibly through the mechanism @ttraband warned about)
- I reformatted (the slow way, the fast way made no difference) my SD card
This made things run much better with just the odd blip. Then yesterday I moved an old laptop into the shed and installed Repetier Host, attached to my board and removed the LCD Display from things completely. Three jobs ran perfectly. Yes!
I’m slightly uncomfortable with a dual cause for all this (spindle power interfering with data from card to board, despite their physical separation), but it seems the only reasonable explanation.
At first I thought this comment from @jeffeb3 was rather unhelpful “The machine is dumb”, but actually it is a fact that I needed to use in all my problem solving. I will not forget this.
Thank you all for your patience, I’ve learnt a lot. I have also learnt that this machine means rather a lot to me which is either weird, or a huge accolade, depending on how you look at it.
Lastly, I finished off a little practise sample: ignore the imperfections in the shapes, that was my poor execution of the cuts, but I was wondering about creating floating shapes in resin by cutting not quite through the material, filling with resin and then planing of the back. Works well, and I think this could be interesting. No ideas what I could use it for yet though.
