I’ve decided to create a portable briefcase size eurorack case to fit my modules using lightweight hard plywood to reduce the building time, cost and for aesthetic purpose. Some minor customised small parts will be 3-D printed.
Specifications as follows:
3U + 3U (two-tier at about 128.5mm height each)
84 HP (about 5.08mm / HP width)
100mm depth for lightweight and mobility.
9mm case panel thickness.
Usually, it is recommended to have 160mm depth case but I find out it’s too big (thick). However, you need to check your modules set with the one has max. depth. The Doepfer BBD delay has 60mm depth and the analog modules has bigger PCB board up to 100mm. Most modern modules has 20 to 50mm depth. If the eurorack has more than 90mm depth and barely touch the back end of your case, you may use raised nuts or standoff to extend-raised your module and cover (glued) the open sides with 3-D printed or PCB board panels (with specific measurement).
I will be using wooden slabs with several vertical support as temporary rails for the modules. The commercial eurorack rail product on the market is unreasonably very expensive. I have observed similar rails specifications which is used for 3-D printer frame and way more cheaper price that can be used as eurorack rail (this will be updated). The main ‘reason’ that I heard it is advisable to use aluminum rails as for heatsink and its heat dispersion properties to cool down the modules…. Perhaps, alternatively we can install small computer fan (5v raspberry Pi fan?). I will investigate this further for better economical and optimum performance solution.
I will do some sanding on the wood and do a several clear coat spraying to maintain the original wood color.
Next I will be installing a commercial power module to power up several modules fitted in the case. For this, I am using Behringer CP1A power supply unit (PSU) which only cost around £55-60. There are several diy eurorack PSU out there but I would not give my self a high risk level on trying to blow-up and destroy my several £ £ £ modules with troubled PSU (non-QC). We will talk more about the PSU in another page.