OK. Got some work done. Perfect? No, but a really good start. Overall I am very happy. The brackets are dead-nuts on which is key. The main thing I ran into was the thru holes in the 1/8 panels were a little small. I had to re-drill them with a .116 bit on the press. I did spec .116 which irritates me a little. From my experience, the very small laser cut holes thru aluminum are a little undersized. The laser also sometimes leaves a small tit inside the hole that needs to be cleaned up. Anyhow, no biggie for a proto run. The worst part was cleaning the small bur around the hole on the back-side after drilling. As you can see, I just grabbed the first sanding block I found which looks like it had 80 grit on it. It's on the inside so who cares really.
So, I will spec that the hole dims are critical and cannot be missed.
The other thing I want is for the countersinks to be deeper. If they miss on the depth, they need to miss deeper not shallower. I did spec them over-sized also but I think they loose a little since they wide belt sand them after to clean them up a little.
Oh, the other thing that burns my ass is that I flipped the stop areas for the ground planes on the PCB backplane. I think I mentioned that earlier. I need to adjust the silk on the inside a tiny bit too. Proto before production. Proto before production. Words to always live by.
Anyhow, take a gander.
Later, I will show how they can be easily added together. Also, I have the 2 modules high sides that I will assemble for my own needs. Those I need to drill yet and will have to deepen the countersinks before I assemble.
Cheers, Jeff
![[silent:arts]](https://cdn.imagearchive.com/groupdiy/data/avatars/m/0/172.jpg?1620371656){kind=avatar}
