my 6040 experience (yeah, and problems) so far

[jimbo_cnc]

I'll leave it at 8 then, and enjoy high speed rapids over my 60x60mm workpiece :)

2 new drivers arrived today. Everything now appears to be working. I took one of the dodgy ones apart and the heatsinking was poor - blob of paste covering about 25% of the surface area. A nicely ground bit of aluminium plate between chip and heatink, but it had been chopped leaving a burr which lifts the end!

Before I do any sustained work, I think I will take my good ones apart and ensure a good heatsink connection.

Also spotted one very poor solder connection, so there is a posiibility of fixing the bad ones.


I did take the goods ones apart, and made sure the heatsinking was good. The 2 replacements, and the one original that worked had smaller (but flatter) heat sink pads than the faulty ones. Indicating that the design is at least evolving! The pad edges still needed a clean up though, and the paste was still only 20% coverage.