I started with just a small Buchla-format system consisting of 12U of modules I built. Similar to my 5U experience, I continued to add more modules and needed a larger cabinet. While the folding cabinets are nice, I dislike the depth and the noisy switching power supplies. I chose to build a 36U slant cabinet with linear power supplies.
I chose the HCC15-3-A+G for 3 amps of +/-15V and the HBB512-A+G for 1.25 amps of +12V and 3 amps of +5V. I initially planned an all-wood cabinet but the module mounting holes are too close to the edge of a wood mounting rail to have any structure. Metal rails got expensive with the amount of machining required. I chose to build a wood slant cabinet using six 6U boats. I selected boat with Tinnerman nuts since they provide some minor adjustability.
Note that Buchla used a Tinnerman C991-440 which better fits the narrow mounting rails. The C991-440 are 0.252" wide while many other U clips are 0.315" wide.
Here is a comparison of a standard U clip on the left and the Tinnerman on the right.
I chose Poplar for the wood similar to my 5U cabinets and added 1/2" filler strips between the boats to eliminate any interference from adjacent panels. This also provided nice solid structure that I simply built the cabinet around.
On each front corner I added a banana jack for signal ground. Since the wood is 3/4" thick I had to recess the nuts.
I made a 1U power panel to mount on the rear with the AC switch, IEC mains in and thru, fuses, signal ground jack, and a 6 pin power plug to be able to power external modules if needed. This is a FrontPanelExpress printed panel over natural aluminum.
I insulate all mains wiring with heat shrink and cover any exposed terminal with silicone. The two cables terminate in 3 pin Molex connectors for the power supplies.
I drilled 7/8" holes behind the power distribution boards and connected them with 18 gauge wire to barrier strips on the rear so the power to each boat is direct and not daisy chained. I made a bus bar for the Q and N grounds.
Here is a close-up of the side of the power panel.
Here is a close-up of the power supplies and wiring.
Here's the finished cabinet. I chose to keep the 208/218 on the side as it is more usable horizontally.
It does have a back. All of my cabinets are totally enclosed. The B3 is in the foreground and the M2 is in the background. That is my Sony/Tek 323 oscilloscope on top.