Yamama SEQTRAK Rugged Box

The is a rugged box case for the Yamaha SEQTRAK. The little groove box has a very long shape so I had to do a lot of work and prototypes to finally settle on a strong seam that is sealed so you can get this folding case design. The SEQTRAK is so light and seemingly fragile that I felt it needed something rugged to protect it.

To keep it from moving around it's a bit of a tight seal into the bottom half so you have to carefully orient it to go fully in and pull it out. Then the top halves have the soft beams to safely keep it in place. The strong hinge design I based this on can sometimes make it difficult to close, but I needed it to give room for the middle seal's screws and I felt it gave better freedom to fit over the top of the SEQTRAK when closing.

The case is two halves and to match the look of the SEQTRAK I think it looks good to use two colors like I did here. This is Polymaker Polylite Orange PLA PRO and eSun PLA PRO Gray. Neither match the colors, but close enough for me.

You don't need any supports when printing. 

• For the Hard parts:
  • For top and bottom halves I suggest using 3 walls and 15-20% infill of any reasonable pattern. Grid or Gyroid suggested. 
  • For Clasp and Hinge use 3+ walls so there is no infill. Be sure to print as uploaded for maximum strength.
• For the TPU parts:
  • For Mid and Hinge seal use 3 or more walls so there is no infill. As indicated on the files page you'll need two of each. 
    • The middle seal is half the height of the Hinge seal. It should still offer some measure of sealing but I cannot guarantee anything. At full height the case halves would not lie flat once put together.
  • For the Top Long and Top Short we want them somewhat compressible so used 1 wall, 10% Gyroid infill so it's fairly soft. They probably barely touch the SEQTRAK at all, but it's best to be safe.  As indicated on the files page you'll need two of each. 
    • These should snap right on and require no glue, but if you glue them on use the right kind of super-glue so it will adhere to both the plastic and the tpu. Loctite Brush On worked well. Regular Loctite ultragel did not seem to work for me.

PLA is probably easiest and plenty strong. If you want you can use something even stronger than PLA or more UV resistant like ABS or PETG.

You'll need:

• 8 - 30mm M3 Screws
• 4 - 16mm M3 Screws
• 12 - M3 Lock nuts.

You might need a ball headed hex wrench for the middle screws. For whatever reason I swapped which side was the screw and which side was the nut, but no need to match me.