Hi Alex That is just typical for these machines, you fix one problem and only end up identifying the next one. Unfortunately, you have reached a point where your BG4000 loses its similarity with my BG6000 - I have no complex switching system to fiddle with, so I can't help you with that one. I am sure that someone on the site does know the nuances

Shims fixed with superglue and cut to the same profile as the Perspex. Everything is now ready for final assembly.

Shims cut from 0.45mm thick plastic

Test assembly for a good fit

Small nicks made to locate the pins on the backing plate

Bottom cutouts made for the wheels

Blank cut from 4.5mm Perspex with protective covering in place.

Hi Paul It sounds as if you are making some excellent progress. After you get into mass production, I will probably order some from you. I have measured the cursors on both the 3000 and 4000 and they are a similar thickness, around 4mm depending on whether the ridge is included or not. At the moment, all of my units are assembled so I am unable to get

Well done Alex I must have missed your follow up post, the one after you reported the readings. It probably came along while I was compiling my replies. Anyhow, at least you have a solenoid that works and an arm that drops when required. Yes, I would have a look at the adjustment of the photosensor - I had that problem on my unit as well - it was fairly

You can start to understand why I have developed an interest in fixing cursors and sliders. Surely there must be a complete set in this lot somewhere. However, I am still looking for the black tuning slider for the BM4000 ?? Geoff