MTM 30 Double Decker Mounting Plate

Small and water-tight. Double decker mounting plates allow tons of space for power supplies and components.


Stackable mounting plates allow more equipment to go in the crate.

The smallest of the MTM enclosures, the MTM 30 can still be packed with a full size power supply and tons of space for components on the top shelf.


  • Fully customizable component holes using the JDeation Designer
  • Perfectly matched to mount to a MTM 30 Enclosure
  • Top plate cut-out allows easy wiring between the top and bottom plates

Customize & Download our Featured Designs

Assembly Instructions

Assembly instructions for - MTM 30 Double Decker Mounting Plate

Please read these instructions fully and carefully before beginning your assembly. A little bit of learning and planning can make the difference between a easy great assembly and a hard mistake prone assembly.

The following assembly instructions contain both design specific and general assembly instruction which may not be specific to your design.

1) Design Your Mounting Kit Hide

All of the JDeation designs are customizable using the JDeation Designer

View our detailed walkthrough video for instructions on how to use the JDeation Designer

2) Gather Required Hardware Hide

We offer Hardware kits which includes the parts below.

Our kits are cheaper than buying parts at home depot and contain exactly the parts you need.

HW Kit for MTM 30 Double Decker Mounting Plate

* example image only
Buy Now - $6

The following pieces of hardware are required for assembly.

Most parts are available at home depot - all are available online.

  1. #8 x 4" Bolt - qty: 4
  2. #8 nut - qty: 8
  3. 1/8 pex tubing as spacer
  4. #6 x 1/2" Self Taping Screw - qty: 4
  5. 4-40 standoffs / screws for mounting components (PS, Controller, Power Dist, etc...)
  6. 4-40 locking nut
  7. Power Supply Screws - typically 4mm

3) Fabricate Mounting Plates Hide

We offer thick acrylic plates laser cut to your exact specifications.

Our 3/16 plates are much sturdier than using wood and come in multiple colors. Much easier and cooler than building your own.

3/16 Laser Cut Acrylic - MTM 30 Double Decker Mounting Plate

* example image only
Buy Now - $14

The following plate fabrication instructions serve are general documentation for all mounting plate designs.

Step 0:

Acquire material to make your plates. Plastic or wood are good choices. The bellow instructions use 5mm plywood which was purchased from a local home depot. The material you choose MUST be 5mm or less in thickness.

Step 1:

Print your design on your home paper printer to scale.

On your design, click the download button and select PDF (Print). You must open the PDF in Adobe Reader to get the advanced print functions. Do not open the PDF in your browser. From the Adobe Reader print dialog box, select the following options.

Image of design printed to scale:

Step 2:

Cut and Tape your designs together. Use the Adobe cross marks to align paper perfectly. It is important to spend time on this step and get alignment correct as a misaligned tape job will interfere with hole placements on layout.

Step 3:

Apply Gluestick to back of paper. We have had good success with repositionable glue sticks.

Step 4:

Apply paper design to wood. Line up two edges of design with two edges of wood if possible to reduce cutting.

Step 5:

Drill the black circles on the design. The following size drill bits are recommended. Also while not necessary it is recommended to use a brad point drill bit as it allows greater precision due to its sharp point on tip.

Screw Size Drill Size Typical uses
4/40 1/8" Component standoffs
#6 5/32" Self tapping screws for mounting to enclosure
#8 3/16" 3" and 4" Bolts for P.S. and Shelves
#10 7/32" 6" Bolts for P.S. and Shelves

NOTE: All Black lines on design are cut or drill lines. Red lines are just for helping create the design and for information useful to assembly.

Step 6:

Use a Jig Saw to cut out the straight black lines.

4) Fabricate Power Supply Brackets Hide

The are 3 options for creating the necessary power supply brackets.

Note: If you purchase an acrylic plate through our store, it comes with all the necessary mounting brackets and you can skip this step.

Option 1: Purchase Acrylic Mounting Brackets

We cut 3/16 acrylic brackets which are very strong and are the best option

3/16 Acrylic Power Supply Bracket - x2

Buy Now - $1.50

3/16 Acrylic Vertical Power Supply Bracket

Buy Now - $1.50

Option 2: 3D Print the Brackets

The second best option is to 3D print your brackets. Download the STL designs from Thingiverse.

Download JDeation Mounting Bracket - Thingiverse

Option 3: Cut Mounting Brackets from Wood

Making from wood is a doable option but the small components make this the most difficult option. We recommend using a band saw with a fine tooth blade for these smaller parts.

The mounting bracket cutouts are included in the individual designs themselves.

5) General Double Decker Assembly Instructions Hide

The following assembly instructions are for the easy remove power supply design, but also currently serve as the general documentation for all other less complex builds. For general builds, please alter instructions by skipping unnecessary steps. The actual design shown is the MTMACR8-72 Easy Remove.


Step 1:

Remove plastic or paper film from both sides of acrylic or wood. Its much easier to do this now than after assembly.

NOTE: Occasionally the fabrication process will remove one or both sides. If you can see through the acrylic clearly then the film is gone.

Step 2:

Attach the power supply brackets using 4mm screws and either horizontal or vertical mounting bracket.

Step 3:

Attach bolts. The MTMACR8-72 has both 4” inch and 3” bolts, but not all designs have both. These should be inserted in the largest holes on the plate. See diagram below for bolt / washer / nut ordering. NOTE: Refer to your online design to find appropriate holes.


Step 4:

Attach 4/40 standoffs and k-nuts to smallest holes. No washer is needed.


Step 5:

Attach components to the standoff. No washer is needed.

Step 6:

Use self tapping screws to attach mounting plate to the enclosure. Holes should be medium size and in each corner of the mounting plate.

Step 7:

Insert power supplies. See diagram below for spacer / nut ordering. You control the distance between the power supplies through how long you make your spacer. The spacers are held in place with a K-Nut. No washers needed.

Step 8:

Insert upper shelf. Upper shelf sits directly on spacer and is attached with a K-Nut from the top. No washer is needed.

Step 9:

Wire it up and make it fancy.

Few tips:
  • Don’t tin your wires if inserting them into a screw down clamp. Solder will expand slightly and loosen the clamp.
  • Use fuse between power supplies and controllers. A lose connection could cause an arc and if unfused could damage your power supply or your controller and potentially cause a fire.
  • Make sure you use appropriate guage wire for the amperage you plan on needing. Small guage wire on high loads can cause greater voltage loss and in extreme cases start a fire.

Step 10:

Post a picture of your killer new build to facebook - make sure you tag JDeation Designer!

Use our contact page if you require assistance with your build. This is a new service and we would love your feedback. What worked well, what didn’t work well?

Finished Build (outside of case)

Finished Build with wood plates (outside of case)