Correct saddle plate bearing mounting hole and counter bore sizes

[ptomli]

The saddle plates for X and Y axes have a number of counter bored holes, mainly for mounting the bearings, which are M5. The correct counter bore diameter is 9.75mm, depth 5mm, on a 5.8mm hole (normal fit).

To ensure the socket head cap screw sits below the surface of the plate, the depth of the counter bore can be made 5.5mm

[ptomli]

The Somta User Guide lists 10mm as the counter bore diameter, as does Arc Euro Trade. It's probably easiest to simply use 10mm and be happy with the resultant size from the counter bore/end mill. It's not a critical dimension, so long as the screw head fits in.

[ptomli]

All the counter bores are now suitably sized