This is an introduction to the Acrylic Modular Case 84HP from Takazudo's DIY series.
This product is a modular synthesizer case designed by Takazudo. It comes in two variations: a set with laser-cut acrylic boards, 84HP rails, screw-fastening rails, and assembly hardware, and a rail-less version adjusted for TipTop Audio Z-Rails 84HP.
This product is available for purchase below.
- Product Photos
- Two Variations of the 84HP Case
- What are TipTop Audio Z-Rails?
- Development Background
- Premium Rails
- Case Features
Product Photos
Two Variations of the 84HP Case
First, this modular case comes in two variations:
- A: Version with rails
- B: Rail-less version for Z-Rails 84HP
The differences between these two variations and their contents are described below.
A: Version with Rails — Contents
The version with rails includes pre-cut acrylic boards, 84HP rails, screw-fastening rails, and assembly hardware.
The acrylic boards are covered with a protective film. Please peel it off before use.
To secure the rails to the case, use the included M5 screws and large washers. All you need is a large screwdriver to assemble.
B: Rail-less Version for Z-Rails 84HP — Contents
Version B is designed for those who already own TipTop Audio's Z-Rails 84HP. It is designed to fit the Z-Rails 84HP.
The acrylic board dimensions differ slightly, and M4 screw washers are included.
M4 screws themselves are not included, so please prepare them as needed. If you have a Happy Ending Kit, you don't need to purchase M4 screws separately. (M4 screw example: Amazon: Onokatsu Phillips Truss Screws)
What are TipTop Audio Z-Rails?
TipTop Audio Z-Rails 84HP are modular synth rails sold by modular synthesizer manufacturer TipTop Audio.
You are probably more likely to come across the Happy Ending Kit, also sold by TipTop Audio. The Happy Ending Kit is a set that includes Z-Rails 84HP, a frame, and the Micro Zeus power module.
These are available domestically at retailers such as Five-G.
- Five-G: Tiptop Audio: Z-Rails 84HP Silver Pair
- Five-G: Tiptop Audio: Z-Rails 84HP Black Pair
- Five-G: Tiptop Audio: Happy Ending Kit Silver
- Five-G: Tiptop Audio: Happy Ending Kit Black
Development Background
The motivation for developing this case came from the fact that I (Takazudo) owned a Happy Ending Kit. At first glance, you might wonder if such an exposed frame is really sufficient, but the compact size turned out to be quite convenient for attaching and removing various modules, and I enjoyed using it.
However, when I wanted to use it more seriously, I thought a case to enclose the frame would be handy. After some research, I discovered someone making cases from acrylic boards, which inspired me to design and make one for myself. This process is documented in this article.
The first case I made was quite expensive to produce, so I searched for more affordable acrylic board cutting methods and, after fine-tuning the dimensions, completed this case. Originally intended as an upgrade for Happy Ending Kit owners, I decided it would be more practical to also sell it with rails included.
After researching and sourcing rails, adjusting the acrylic board dimensions to fit those rails, the version with rails was finalized — all you need is a power module and you're ready to start with modular synth.
Premium Rails
The rails are high-quality products manufactured by Gie-Tec, the company that produces the rails used in cases by Doepfer, a long-established modular synth manufacturer. The color is black, with a lip that provides a secure fit for modules.
The photo below shows where M5 screws can be attached, marked for reference.
The rail selection was made with advice from Denki Bijutsu Kenkyukai. Thank you!
Case Features
This case has its side panels secured to the rails with screws, while the bottom and front/back panels are supported by fitting into slots cut into the side panels.
Acrylic boards are less durable and impact-resistant compared to aluminum or other metal cases. Since this case doesn't include a lid, it's not intended for transport. However, the acrylic boards are a thick 5mm, giving the case a surprisingly solid build.
Module depth is accommodated up to 5cm. In the diagram below, the orange area shows the space occupied by a 5cm-deep module.
Assembly is completed simply by passing screws through the two holes in the side panels, placing washers between the screws and panels, and securing the rails.
With the version that includes rails, all you need is a power module to be ready to start with modular synth. Alternatively, you could start with a Happy Ending Kit and then upgrade to this case as your interest in modular synth grows.
This case was designed with both modular synth beginners and those who already have a case and want to easily expand their setup in mind.
Assembly Tips
The included rails can accept M5 screws, but they don't come pre-threaded, so you'll need to apply a fair amount of force when first screwing them in. Before assembling the case, thread the screws into the rails once to create the threads, and subsequent assembly will go much more smoothly.
Before attaching the rails, there's a step where you fit the panels together using their interlocking tabs and slots. Temporarily securing the panels together with tape at this point will make the rail attachment process much smoother.
Power Module
Here are two power modules that are relatively easy to obtain domestically.
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That concludes our introduction of the Acrylic Modular Case 84HP.
We hope you find this helpful.